How to Hike Battery Construction 133 from San Francisco

Many hikers and outdoor enthusiasts in the San Francisco Bay Area are drawn to the region’s rich network of trails, historic sites, and panoramic coastal views. Among the lesser-known but deeply rewarding destinations is Battery Construction 133 — a forgotten relic of military history nestled within the Golden Gate National Recreation Area. Located on the bluffs of the Marin Headlands, this abandoned artillery battery offers not only a glimpse into America’s coastal defense legacy but also a challenging and scenic hiking experience with sweeping vistas of the Pacific Ocean, the Golden Gate Bridge, and the city skyline.

Despite its historical significance and breathtaking beauty, Battery Construction 133 remains off the beaten path for most visitors. This guide provides a comprehensive, step-by-step tutorial on how to hike to Battery Construction 133 from San Francisco — covering everything from route planning and trail conditions to safety tips and historical context. Whether you’re a seasoned hiker or a curious urban explorer, this guide will equip you with the knowledge to navigate this unique destination with confidence and respect for its heritage.

Step-by-Step Guide

1. Plan Your Departure from San Francisco

Begin your journey in San Francisco by choosing your departure point. Most hikers start from the city’s northern neighborhoods, such as the Presidio or Golden Gate Park, due to their proximity to the Golden Gate Bridge and the Marin Headlands. Public transit options include Muni bus lines 28, 29, or 38, which connect downtown to the Presidio Transit Center. Alternatively, driving offers the most flexibility, with ample parking available at the Presidio’s Main Post or the Golden Gate Bridge Welcome Center.

If driving, use GPS coordinates 37.8190° N, 122.4780° W to navigate to the Battery Spencer parking area — a common starting point for this hike. Note that parking fills quickly on weekends and holidays, so aim to arrive before 8:00 AM. Carpooling or using ride-sharing services is recommended to reduce congestion and environmental impact.

2. Cross the Golden Gate Bridge on Foot

After arriving at your starting point, make your way to the Golden Gate Bridge pedestrian walkway. The walkway is located on the eastern side of the bridge and is open daily from 5:00 AM to 6:00 PM. The crossing is approximately 1.7 miles long and offers unparalleled views of the bay, Alcatraz Island, and the city skyline.

Wear comfortable walking shoes and bring a light jacket — the wind can be strong and unpredictable on the bridge. If you’re not comfortable walking the entire span, consider taking a shuttle or taxi to the Marin Headlands side, but be aware this will shorten your hike and reduce the full experience.

3. Enter the Marin Headlands via the Rodeo Beach Area

Once across the bridge, follow signs toward Rodeo Beach and the Marin Headlands Visitor Center. The Visitor Center, located at 1501 Marine Drive, offers maps, restrooms, and information about trail closures or wildlife activity. From here, head toward the Rodeo Beach parking lot and begin the hike on the Rodeo Valley Trail.

This initial segment is relatively flat and winds through coastal grasslands dotted with wildflowers in spring. Watch for signs of native wildlife, including coyotes, foxes, and a variety of migratory birds. The trail is well-maintained and clearly marked with yellow blazes.

4. Ascend the Coastal Trail to Battery Spencer

After approximately 1.2 miles, the Rodeo Valley Trail merges with the Coastal Trail. Turn right onto the Coastal Trail, which begins a steady ascent up the hillside. The climb is moderate but can be strenuous, especially on hot days or when carrying a backpack. Allow 45–60 minutes for this leg of the journey.

As you climb, the views open dramatically. To your left, the Pacific Ocean stretches endlessly; to your right, the summit of Battery Spencer becomes visible — a former 10-inch disappearing gun emplacement built in 1904. This site is not your final destination but serves as a critical landmark and rest stop.

At Battery Spencer, take a moment to admire the panoramic view of the Golden Gate Bridge from above — often considered the most photographed vantage point in the region. Use this opportunity to hydrate, refuel, and orient yourself. Battery Spencer is marked by concrete foundations, metal railings, and interpretive plaques detailing its military history.

5. Follow the Headlands Ridge Trail to Battery Construction 133

From Battery Spencer, continue along the Headlands Ridge Trail, which heads eastward along the ridge. The trail is narrow in places and may be rocky or muddy depending on recent rainfall. Stay on the marked path — off-trail hiking is discouraged due to fragile vegetation and potential unmarked hazards.

After 0.6 miles, you’ll pass the ruins of Battery 121, another Cold War-era installation. Continue another 0.4 miles until you reach a fork in the trail. Take the left path, which leads toward the unmarked but well-worn footpath to Battery Construction 133.

Battery Construction 133 is not signposted, which is intentional — the National Park Service preserves its authenticity by minimizing commercialization. Look for a low, concrete structure partially obscured by brush, with two large gun emplacements facing the ocean. The structure is approximately 100 feet long and 40 feet wide, with rusted metal doors and crumbling interior walls. The surrounding area is littered with historical artifacts, including old ammunition casings (do not touch or remove them), concrete slabs, and utility conduits.

6. Explore and Document Responsibly

Once at Battery Construction 133, take time to observe the architecture and engineering. This battery was constructed in 1942 as part of the Harbor Defenses of San Francisco during World War II. It housed two 155mm guns mounted on Panama mounts, designed for rapid deployment and long-range coastal defense. Unlike Battery Spencer, which was designed for large-caliber artillery, Battery 133 was a mobile, flexible defense system meant to respond to fast-moving threats.

Photography is encouraged, but avoid climbing on the structures. The concrete is brittle and may collapse under weight. Use a tripod for stable shots, especially in low-light conditions. Bring a notebook or voice recorder to document your observations — the site offers rich material for historians, photographers, and urban explorers alike.

7. Return via the Same Route or Extend Your Hike

After spending 30–45 minutes at Battery Construction 133, retrace your steps back to Battery Spencer. From there, you have two return options:

• Option A: Return the way you came — via the Coastal Trail to Rodeo Beach, then back to the Golden Gate Bridge.
• Option B: Extend your hike by continuing on the Headlands Ridge Trail to the Point Bonita Lighthouse (add 2.5 miles round-trip). This route includes a tunnel and suspension bridge and offers additional historic sites and tidal pool exploration.

Both routes are well-marked. If you choose Option B, allow an additional 2–3 hours and bring extra water and snacks.

8. Return to San Francisco

Upon completing your hike, return to your vehicle or transit point. If you parked at the Presidio, you can take the PresidiGo shuttle (Route D) back to downtown San Francisco. If you arrived via public transit, check the Muni schedule for the last bus from the Golden Gate Bridge area — typically around 7:00 PM on weekdays and 8:30 PM on weekends.

Always leave no trace. Pack out all trash, including food wrappers, water bottles, and tissue. Avoid leaving any personal items at the battery — not only for safety but to preserve the site’s integrity.

Best Practices

Respect the Site’s Historical Integrity

Battery Construction 133 is not a tourist attraction — it is a protected archaeological site under the jurisdiction of the National Park Service. While it is not fenced or gated, it is legally protected under the National Historic Preservation Act. Do not remove artifacts, carve into surfaces, or spray graffiti. Even small actions, like moving rocks or stepping on fragile foundations, can cause irreversible damage.

Prepare for Variable Weather Conditions

The Marin Headlands are notorious for microclimates. It can be sunny and warm in San Francisco while fog rolls in over the Headlands, reducing visibility and lowering temperatures by 15–20°F. Always carry a windproof, water-resistant jacket — even in summer. Rain is common from November through March, turning trails slick and muddy. Check the National Weather Service forecast for the Golden Gate National Recreation Area before departure.

Wear Appropriate Footwear

Sturdy hiking boots with ankle support and aggressive tread are essential. The trail includes loose gravel, exposed roots, and uneven concrete. Sandals, running shoes, or worn-out sneakers are inadequate and increase the risk of injury. Break in your boots before attempting this hike.

Hydrate and Fuel Properly

The round-trip distance from San Francisco to Battery Construction 133 is approximately 8–10 miles, depending on your route. Plan for 4–6 hours of hiking time. Carry at least 2 liters of water per person, along with high-energy snacks such as trail mix, energy bars, or dried fruit. Avoid sugary drinks — they can cause energy crashes during prolonged exertion.

Travel in Groups

While solo hiking is permitted, it is strongly advised to hike with at least one other person. Cell service is unreliable in the Headlands — even with major carriers. In case of injury or emergency, having a companion can be lifesaving. Inform someone not on the hike of your planned route and estimated return time.

Leave No Trace Principles

Adhere to the seven Leave No Trace principles:

1. Plan ahead and prepare
2. Travel and camp on durable surfaces
3. Dispose of waste properly
4. Leave what you find
5. Minimize campfire impacts
6. Respect wildlife
7. Be considerate of other visitors

At Battery Construction 133, this means not using the site as a picnic spot, avoiding loud music or amplified devices, and keeping dogs on leash at all times.

Timing and Seasonal Considerations

The best time to hike Battery Construction 133 is during late spring (April–May) or early fall (September–October), when temperatures are mild, fog is less frequent, and wildflowers bloom along the trail. Winter hikes offer dramatic storm views but come with higher risks of mudslides and trail closures. Summer mornings are ideal for avoiding crowds and fog — arrive before sunrise for the clearest views and best light for photography.

Photography and Drone Use

Photography is encouraged, but drone use is strictly prohibited within the Golden Gate National Recreation Area without a special permit. Even recreational drone operators are subject to fines up to $5,000. Use a telephoto lens to capture the battery from a distance without intruding on the site.

Tools and Resources

Essential Gear Checklist

Before setting out, ensure you have the following:

• Sturdy hiking boots
• Water (minimum 2 liters per person)
• High-calorie snacks
• Windproof and waterproof jacket
• Sunscreen and lip balm with SPF
• Hat and sunglasses
• First aid kit (including blister treatment)
• Map and compass (download offline maps via Gaia GPS or AllTrails)
• Fully charged phone with power bank
• Headlamp or flashlight (in case of delays)
• Camera or smartphone with wide-angle lens
• Trash bag (pack out everything you bring in)

Recommended Digital Tools

Technology can enhance your experience — use these trusted resources:

• AllTrails — Search “Battery Construction 133” for user-submitted trail maps and recent condition reports.
• Gaia GPS — Download the Golden Gate National Recreation Area offline map for navigation without cell service.
• National Park Service App — Provides real-time alerts for trail closures, wildlife advisories, and weather.
• Google Earth — Use the historical imagery tool to compare the battery’s condition from the 1940s to today.
• Atlas Obscura — Offers background stories and photos from other visitors who’ve documented the site.

Books and Historical References

Deepen your understanding with these authoritative sources:

• Coastal Defenses of the United States: The Harbor Defenses of San Francisco by John M. B. Smith (University of California Press, 2008)
• Fortress of the Golden Gate: Military History of the Marin Headlands by Robert W. T. Johnson (Presidio Press, 2012)
• Army Corps of Engineers: WWII Coastal Artillery Installations — Official NPS archival documents available at nps.gov/goga

Local Resources and Guided Tours

For those seeking a more structured experience, the Golden Gate National Parks Conservancy occasionally offers guided historical hikes to Battery Construction 133. These are led by trained docents and include detailed historical context, artifact identification, and safety briefings. Check their calendar at parksconservancy.org.

Local outdoor shops such as REI San Francisco and The Trailhead in the Mission District offer gear rentals, trail advice, and maps. Staff are familiar with the route and can provide updated conditions.

Real Examples

Example 1: The Photographer’s Journey

In April 2023, freelance photographer Elena Rodriguez documented Battery Construction 133 for a project on forgotten WWII sites. She hiked from the Presidio at 6:30 AM, arriving at the battery just as the fog lifted. Using a Canon EOS R5 with a 70–200mm lens, she captured the contrast between the decaying concrete and the vibrant green grass reclaiming the site. Her series, “Echoes of the Coast,” was later featured in National Geographic’s online edition and helped raise awareness about the need for preservation funding.

Elena’s key takeaway: “The battery doesn’t scream for attention — it whispers. You have to be quiet, patient, and observant to hear it.”

Example 2: The Student Research Project

San Francisco State University student Marcus Lee conducted field research for his senior thesis on military architecture in urban landscapes. He visited Battery Construction 133 three times over two months, documenting structural deterioration, vegetation growth, and graffiti patterns. He collaborated with the National Park Service to create a digital 3D model of the battery using photogrammetry software.

His findings revealed that the battery’s original drainage system was still partially functional, and that native plants like California poppy and yarrow were helping stabilize the soil. His thesis, “Nature’s Reclamation: Ecological Recovery at Abandoned Coastal Batteries,” was awarded the 2023 Environmental History Prize.

Example 3: The Family Hike

The Chen family from Oakland brought their two children, ages 9 and 12, on a weekend hike to Battery Construction 133. They used the AllTrails app to track their progress and brought a scavenger hunt list with items to find: “a rusted bolt,” “a concrete step,” “a bird’s nest near the wall.”

“It wasn’t just a hike — it was a treasure hunt with history,” said Mrs. Chen. “My kids asked questions about why the guns were there, who built them, and what happened after the war. We spent hours talking about it over lunch at Rodeo Beach.”

The family later donated a handmade map of their route to the Marin Headlands Visitor Center.

Example 4: The Solo Explorer’s Reflection

After a difficult personal year, retired teacher Harold Kim hiked to Battery Construction 133 alone in November 2022. He described the experience as “meditative.”

“I sat on the edge of the emplacement for an hour, just listening. The wind, the gulls, the distant hum of traffic — it all felt like time folding in on itself. I didn’t take a photo. I didn’t need to. The silence was the artifact.”

Harold returned the following spring with a small, hand-carved wooden plaque bearing the words “Remember Those Who Guarded.” He placed it quietly near the battery’s entrance. It remains there today, untouched and unmarked by others.

FAQs

Is Battery Construction 133 open to the public?

Yes. Battery Construction 133 is located within the Golden Gate National Recreation Area and is accessible to the public during park hours (5:00 AM to 10:00 PM). There are no entrance fees or permits required for day hiking.

Can I bring my dog?

Dogs are allowed on-leash on all trails leading to Battery Construction 133. However, they are not permitted in sensitive ecological zones or within 50 feet of historic structures. Always clean up after your pet.

Are there restrooms along the trail?

Restrooms are available at the Marin Headlands Visitor Center and at Rodeo Beach. There are no facilities near Battery Construction 133. Plan accordingly.

Is the trail suitable for children?

The hike is moderate to strenuous and may not be suitable for very young children or those with mobility issues. Children aged 8 and older with prior hiking experience can complete the route with adult supervision. The final 0.4-mile stretch to the battery is uneven and requires attention.

What should I do if I find an artifact?

Do not touch, move, or take it. Note its location and report it to the National Park Service via the Golden Gate National Recreation Area hotline (415-561-4700) or through their website. Artifacts are protected by federal law.

Is there cell service at Battery Construction 133?

Cell service is unreliable. Verizon and AT&T may offer intermittent signal near Battery Spencer, but coverage drops significantly near Battery 133. Download offline maps and carry a physical map as backup.

Can I camp near Battery Construction 133?

No. Camping is prohibited in the Marin Headlands except at designated campgrounds such as Kirby Cove or Muddy Hollow. Battery Construction 133 is not a campsite.

Why isn’t Battery Construction 133 better marked or restored?

The National Park Service follows a policy of “managed decay” for many military sites — preserving them in their current state as historical artifacts rather than restoring them to original condition. This approach maintains authenticity and allows nature to reclaim the landscape.

Is it safe to explore the interior of the battery?

While the exterior is stable, the interior is hazardous. Floors may be rotten, ceilings may be unstable, and there may be hidden debris or sharp metal. Do not enter any enclosed structures. Observe from the outside.

Can I fly a drone over Battery Construction 133?

No. Drone use is banned throughout the Golden Gate National Recreation Area without a special permit from the National Park Service. Violators face significant fines.

Conclusion

Hiking to Battery Construction 133 from San Francisco is more than a physical journey — it is a passage through time. This forgotten artillery battery, hidden among the windswept hills of the Marin Headlands, stands as a quiet monument to a nation’s wartime preparedness and the enduring power of nature to reclaim human endeavor.

By following this guide, you’ve not only learned how to navigate the trail — you’ve learned how to engage with history respectfully, safely, and meaningfully. Whether you come for the views, the solitude, the photography, or the mystery, Battery Construction 133 rewards those who approach it with patience and reverence.

As you leave the site, take one final look at the horizon — the Golden Gate Bridge glowing in the afternoon light, the ocean stretching beyond sight, and the concrete ruins slowly being embraced by grass and wildflowers. This is not a place to be conquered. It is a place to be remembered.

Share your experience — not with selfies, but with stories. Tell others why this battery matters. Preserve its silence. Protect its stones. And return again, not to take, but to listen.