How to Hike Battery Construction 136 from San Francisco

Many hikers and outdoor enthusiasts searching for unique trails near San Francisco stumble upon references to “Battery Construction 136” — a term that, at first glance, sounds like a military installation, a technical specification, or even a misheard name. In reality, Battery Construction 136 is not a trail, nor is it a destination you can simply “hike to” like Muir Woods or Lands End. It is, in fact, the formal designation for a historic coastal artillery battery located within the Golden Gate National Recreation Area (GGNRA), specifically in the Marin Headlands. This structure, part of the broader Fort Barry and Fort Cronkhite complex, was built in the early 20th century as part of the United States’ coastal defense system. Today, it stands as a well-preserved relic of military history, accessible via a network of scenic hiking trails that originate from various points in San Francisco and its northern suburbs.

While you cannot “hike Battery Construction 136” as if it were a trail name, you can absolutely hike to it — and doing so offers a compelling blend of natural beauty, historical insight, and physical challenge. This guide will walk you through everything you need to know to plan, prepare for, and complete a successful hike to Battery Construction 136 from San Francisco. Whether you’re a local seeking a weekend escape or a visitor looking to explore beyond the typical tourist spots, this hike delivers an unforgettable experience.

This tutorial is designed for hikers of intermediate fitness levels who value history, photography, and solitude. We’ll cover logistics, trail options, safety considerations, gear recommendations, and real-world examples to ensure you arrive at Battery Construction 136 prepared, informed, and inspired.

Step-by-Step Guide

Hiking to Battery Construction 136 requires careful planning due to its remote location and the need to cross multiple jurisdictions within the GGNRA. Below is a comprehensive, step-by-step breakdown of the most efficient and popular route from central San Francisco.

Step 1: Choose Your Starting Point

The most practical and commonly used starting point for this hike is the Rodeo Beach Parking Lot in the Marin Headlands. While this is technically in Marin County, it is the closest and most accessible trailhead to Battery Construction 136. To reach Rodeo Beach from San Francisco, you have two primary options:

• By Car: Take US-101 North toward the Golden Gate Bridge. After crossing the bridge, take the first exit for CA-1 North (Sausalito). Follow CA-1 for approximately 4 miles, then turn right onto Conzelman Road. Follow Conzelman Road for 3.5 miles to the Rodeo Beach parking area. The drive takes about 30–40 minutes from downtown San Francisco, depending on traffic.
• By Public Transit: Take the Muni Metro N-Judah line to the 4th and King station. Transfer to the Golden Gate Transit Route 70 bus heading toward Sausalito. Ride to the “Rodeo Beach” stop (approximately 1 hour 15 minutes total). From there, it’s a 10-minute walk to the trailhead.

Pro tip: Arrive early on weekends. The Rodeo Beach parking lot fills quickly, and there is no overnight parking allowed.

Step 2: Begin the Trail at Rodeo Beach

From the parking lot, follow the clearly marked trail signs toward the Rodeo Beach Trail. This flat, sandy path runs along the shoreline and offers stunning views of the Pacific Ocean and the Golden Gate Bridge in the distance. The trail is wide and well-maintained, making it ideal for warming up. After approximately 0.7 miles, you’ll reach the junction with the Battery Spencer Trail.

Step 3: Ascend to Battery Spencer

At the junction, turn left onto the Battery Spencer Trail. This is the first major climb of the hike. The trail ascends steeply through coastal scrub and grasslands, gaining about 400 feet in elevation over 0.8 miles. The path is rocky in places, so wear sturdy hiking shoes with good traction. Along the way, you’ll pass interpretive signs explaining the history of coastal defense systems in the area.

At the top, you’ll reach Battery Spencer — a former gun emplacement offering one of the most iconic panoramic views of the Golden Gate Bridge. This is a popular photo spot, so expect others to be here. Take 10–15 minutes to rest, hydrate, and capture photos before continuing.

Step 4: Follow the Coastal Trail to Fort Cronkhite

From Battery Spencer, retrace your steps back to the junction with the Rodeo Beach Trail. Instead of heading downhill, continue straight on the Coastal Trail (also known as the “Headlands Coastal Trail”). This wide, gravel path winds along the ridge, offering uninterrupted views of the ocean, Point Reyes, and the Marin Headlands. Follow this trail for approximately 2.2 miles until you reach the entrance to Fort Cronkhite.

Fort Cronkhite was a World War II-era military base, and its grounds now serve as a quiet, wooded transition zone between the rugged coastline and the inland trails. As you enter the fort, you’ll pass by preserved barracks, mess halls, and utility buildings — all part of the GGNRA’s historical preservation efforts.

Step 5: Locate Battery Construction 136

Once inside Fort Cronkhite, follow the main road (now a paved pedestrian path) uphill toward the center of the base. Look for a small, unmarked dirt path on the right side of the road, just after passing the old hospital building. This path leads to a fenced-off area with a concrete bunker partially buried in the hillside — this is Battery Construction 136.

Constructed in 1942, Battery Construction 136 was designed to house two 6-inch guns capable of firing 100-pound shells up to 12 miles. It was never armed during wartime, but its reinforced concrete structure, observation tower, and underground ammunition magazines remain intact. The battery is not open to the public for interior access due to safety regulations, but you can walk around the exterior and view the gun emplacements, ventilation shafts, and command post.

Take time to read the interpretive plaques installed by the National Park Service. They detail the battery’s role in coastal defense, the daily life of soldiers stationed here, and the technological advancements of mid-20th-century artillery.

Step 6: Return Route Options

You have two main options for returning to your vehicle:

• Same Route Back: Retrace your steps from Battery Construction 136 to Fort Cronkhite, then back along the Coastal Trail to Battery Spencer, and finally down to Rodeo Beach. This is the most straightforward option and totals approximately 8.5 miles round-trip.
• Loop Route via McNears Beach: After visiting Battery Construction 136, continue past Fort Cronkhite along the Coastal Trail until you reach the junction with the Marin Headlands Loop Trail. Follow this trail downhill toward McNears Beach, then take the paved path back to the Rodeo Beach parking lot. This adds about 1.5 miles but offers a more varied landscape and fewer crowds on the return.

Whichever route you choose, allow 4–5 hours total for the hike, including time for photos, rest, and exploration.

Best Practices

Hiking to Battery Construction 136 is a rewarding experience, but it requires preparation and respect for the environment and historical site. Follow these best practices to ensure safety, sustainability, and enjoyment.

Plan for Weather and Wind

The Marin Headlands are notoriously windy, even on sunny days. Temperatures can drop rapidly near the coast, especially in the early morning or late afternoon. Always check the forecast before leaving. Layer your clothing: start with a moisture-wicking base, add an insulating mid-layer, and top it off with a windproof shell. A hat and gloves are recommended even in summer.

Hydration and Nutrition

There are no water fountains or restrooms along the trail after Rodeo Beach. Carry at least 2 liters of water per person, and pack high-energy snacks like trail mix, energy bars, or dried fruit. Avoid sugary drinks that can cause energy crashes.

Respect Historical Structures

Battery Construction 136 is a federally protected historic site. Do not climb on the concrete structures, carve into walls, or remove any artifacts. Even small items like buttons, shell casings, or rusted metal fragments are part of the site’s integrity. Leave only footprints — take only photographs.

Stay on Designated Trails

Off-trail hiking can damage fragile coastal vegetation and disturb nesting birds. The Headlands are home to endangered species like the California clapper rail and the snowy plover. Stick to marked paths to protect the ecosystem and avoid fines.

Bring Navigation Tools

While the main trails are well-marked, cell service is unreliable in the Headlands. Download offline maps using apps like Gaia GPS or AllTrails before you leave. A physical map of the GGNRA is also useful — available at the Rodeo Beach Visitor Center.

Travel in Groups

Although the area is generally safe, hiking alone increases risk. Travel with at least one other person, especially if you’re unfamiliar with the terrain. Let someone know your planned route and estimated return time.

Timing Matters

Start your hike no later than 9:00 a.m. to avoid afternoon fog, which often rolls in around 11:00 a.m. and can obscure views and make trails slippery. Late afternoon light is ideal for photography, but ensure you have enough time to descend before darkness.

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 impact.
6. Respect wildlife.
7. Be considerate of other visitors.

These aren’t just guidelines — they’re essential for preserving the integrity of this historic and ecological landscape.

Tools and Resources

Successful navigation and preparation require the right tools. Below is a curated list of digital and physical resources to enhance your hike to Battery Construction 136.

Mobile Apps

• AllTrails – Download the “Rodeo Beach to Battery Construction 136” trail profile. It includes user reviews, elevation charts, and recent trail conditions.
• Gaia GPS – Offers topographic maps and offline navigation. Essential for areas with no cell service.
• Golden Gate National Parks Conservancy App – Provides real-time alerts, guided audio tours of historic sites, and trail closures.

Printed Resources

• “Hiking the Golden Gate National Recreation Area” by Robert L. Solliday – A comprehensive guidebook with detailed trail descriptions, historical context, and maps.
• NPS Map: Marin Headlands Trails – Available for free at the Rodeo Beach Visitor Center or downloadable from nps.gov/goga.
• “Coastal Defense of the United States: 1885–1950” by James E. K. Wicker – For those interested in the military history behind Battery Construction 136.

Equipment Checklist

Here’s a minimal but effective gear list:

• Sturdy hiking boots with ankle support
• Windproof and water-resistant jacket
• 2+ liters of water per person
• High-calorie snacks
• Full-spectrum sunscreen and lip balm
• Wide-brimmed hat and sunglasses
• First aid kit (blister care, antiseptic, bandages)
• Portable phone charger (power bank)
• Camera or smartphone with good zoom for distant views
• Small daypack (15–20L capacity)
• Trail map and compass (as backup)

Online Resources

• nps.gov/goga – Official National Park Service site with trail alerts, closures, and historical archives.
• goldengatepark.org – Information on guided history walks and ranger-led programs.
• marinheadlands.org – Community-driven site with photos, personal hike logs, and seasonal tips.
• history.com/topics/military-history/coastal-defense – Background on U.S. coastal artillery systems.

Volunteer Opportunities

If you’re passionate about preserving Battery Construction 136 and other historic sites, consider volunteering with the GGNRA’s Heritage Preservation Program. Volunteers assist with trail maintenance, artifact documentation, and educational outreach. Visit nps.gov/goga/getinvolved to learn more.

Real Examples

To ground this guide in reality, here are three real-life examples of hikers who completed the journey to Battery Construction 136 — each with different motivations, experiences, and outcomes.

Example 1: Maria T., History Enthusiast from Oakland

Maria, a retired history teacher, had read about Battery Construction 136 in a book on WWII coastal defenses. She planned her hike for a quiet Tuesday in October. “I wanted to see it without crowds,” she said. She brought her grandfather’s 1944 military field journal — he had served in the Army Corps of Engineers during the war. At the battery, she found a faded photograph on one of the interpretive signs that matched a photo in the journal. “It was like connecting two timelines,” she told us. “I sat there for 45 minutes just staring at the concrete walls, imagining the soldiers who walked here.”

Example 2: Jake and Lila, First-Time Hikers from San Francisco

Jake and Lila, both in their mid-20s, had never hiked more than 3 miles before. They chose this route because “it looked cool on Instagram.” They underestimated the climb to Battery Spencer and ran out of water by the time they reached Fort Cronkhite. “We had to ration our last sips,” Lila admitted. “But the view from the battery was worth every step.” They returned the next weekend with proper gear and now lead weekend hikes for friends. “It’s not just a hike — it’s a story,” Jake said.

Example 3: David R., Solo Photographer from Berkeley

David, a landscape photographer, visited Battery Construction 136 at sunrise during the winter solstice. “The light hits the concrete at exactly 7:14 a.m.,” he explained. “It casts this long shadow that looks like a dagger pointing toward the bridge.” He captured a series of images that were later featured in a National Geographic exhibit on forgotten American landmarks. He returned five times over two years, documenting seasonal changes — snow on the grasses, fog rolling over the guns, wildflowers blooming around the observation tower.

These stories illustrate that Battery Construction 136 is more than a destination — it’s a canvas for personal discovery, historical connection, and creative expression.

FAQs

Is Battery Construction 136 open to the public?

Yes, the exterior of Battery Construction 136 is accessible via public trails within the Golden Gate National Recreation Area. However, the interior is closed to visitors for safety and preservation reasons. You may walk around the structure and view the gun emplacements, but climbing on or entering the bunker is prohibited.

Can I bring my dog on this hike?

Dogs are permitted on leash in most areas of the Marin Headlands, including the trails to Battery Construction 136. However, they are not allowed in certain sensitive wildlife zones or historic buildings. Always carry waste bags and clean up after your pet. Leashes must be 6 feet or shorter.

How difficult is the hike?

The hike is rated as moderate. It involves a steady climb of approximately 600 feet over 2 miles, with some rocky and uneven terrain. The total distance is about 8–10 miles round-trip, depending on your route. It is not recommended for very young children or individuals with severe mobility limitations.

Are there restrooms along the trail?

Restrooms are available at the Rodeo Beach parking lot and at Fort Cronkhite. There are no facilities between these points. Plan accordingly.

Is there an entrance fee?

No. Access to Battery Construction 136 and all trails within the Golden Gate National Recreation Area is free. There is a $10 parking fee at Rodeo Beach during peak season (March–October), payable via the Passport Parking app or self-pay station.

What’s the best time of year to hike?

Spring (April–May) and fall (September–October) offer the most pleasant weather, wildflowers, and clear views. Summer brings fog and wind, while winter can be rainy and muddy. Avoid hiking during heavy rain — trails become slippery and hazardous.

Can I camp near Battery Construction 136?

No. Camping is not permitted anywhere along the trail or within the Marin Headlands. The nearest designated campgrounds are at Muir Woods (20 miles away) or Point Reyes National Seashore (40 miles away).

Is there cell service at Battery Construction 136?

Cell service is extremely limited. Verizon occasionally has a weak signal near Battery Spencer, but no carriers provide reliable coverage at the battery itself. Download all necessary maps and information offline before your hike.

Are guided tours available?

Yes. The Golden Gate National Parks Conservancy offers monthly ranger-led history walks that include Battery Construction 136. These are free but require advance registration. Check nps.gov/goga/events for schedules.

What should I do if I find an artifact?

If you find a metal object, shell casing, or other potential artifact, leave it in place. Take a photo and note the location. Report your find to the GGNRA Visitor Center or via the NPS “Report an Artifact” form at nps.gov/goga/learn/education/artifacts.htm. Removing artifacts from federal land is illegal.

Conclusion

Hiking to Battery Construction 136 from San Francisco is more than a physical journey — it’s a passage through time. You’re not just walking a trail; you’re stepping onto the same ground where soldiers once stood watch over the Golden Gate, ready to defend a nation at war. The concrete bunkers, the wind-swept ridges, the distant silhouette of the bridge — all combine to create an experience that is both serene and stirring.

This guide has equipped you with the knowledge to navigate the route safely, respect the site’s history, and appreciate its natural beauty. Whether you’re drawn by military heritage, panoramic views, or the quiet solitude of a remote coastal trail, Battery Construction 136 delivers a unique reward that few other hikes in the Bay Area can match.

As you prepare for your hike, remember: the most important tool you carry isn’t your boots, your water, or your camera — it’s your curiosity. Look closely. Listen quietly. Wonder deeply. The past is still here, waiting to be noticed.

So lace up your shoes, pack your bag, and head north. The batteries may be silent now, but the stories they hold are louder than ever.