How to Hike Old Railroad Grade from San Francisco

San Francisco is renowned for its steep hills, iconic bridges, and vibrant urban culture—but hidden just beyond the city’s manicured sidewalks and cable car tracks lie forgotten corridors of history: the old railroad grades. These abandoned rail corridors, once vital arteries of commerce and transit, now serve as serene, scenic, and surprisingly accessible hiking trails that offer a rare blend of engineering heritage, natural beauty, and solitude. Hiking an old railroad grade from San Francisco isn’t just a walk—it’s a journey through time, where the gentle gradients of former train tracks make for an easy yet profoundly rewarding outdoor experience.

Unlike traditional mountain trails that demand endurance and technical skill, railroad grades were engineered for efficiency—gradual slopes, wide paths, and minimal elevation gain—making them ideal for hikers of all abilities. Whether you're a local seeking a quiet escape, a history enthusiast drawn to industrial archaeology, or a photographer in search of dramatic vistas, these trails deliver. This guide will walk you through exactly how to plan, navigate, and enjoy a hike along one of San Francisco’s most compelling forgotten rail corridors, with detailed step-by-step instructions, expert best practices, essential tools, real-world examples, and answers to common questions.

Step-by-Step Guide

Hiking an old railroad grade from San Francisco requires more than just putting on shoes and heading out. These routes are often unmarked, overgrown, or partially reclaimed by nature. Success depends on preparation, navigation, and respect for the environment. Below is a comprehensive, practical guide to planning and executing your hike.

Step 1: Choose Your Railroad Grade Route

San Francisco and its surrounding areas were once crisscrossed by dozens of rail lines serving industries, quarries, and commuter traffic. Many were abandoned after the rise of automobiles and highways in the mid-20th century. The most accessible and well-documented route for hikers is the former Southern Pacific Railroad Grade, which begins near the intersection of San Francisco’s Outer Sunset District and extends toward the Pacifica area.

Alternative options include:

• San Bruno Mountain Railroad Grade – Accessible via the San Bruno Mountain Trailhead, this route follows the path of the old San Francisco and San Mateo Electric Railway.
• Bayshore Cutoff Grade – A less accessible but historically rich corridor near the Bayview neighborhood, now partially incorporated into the Bay Trail.

For beginners, the Outer Sunset to Pacifica route is recommended due to its clear trailhead, relatively flat terrain, and proximity to public transit. This route spans approximately 7–9 miles round-trip and is suitable for most fitness levels.

Step 2: Plan Your Start Point

The most popular trailhead for the Outer Sunset Railroad Grade is located near the intersection of 19th Avenue and Sloat Boulevard. From here, follow the paved path westward until you reach the transition from asphalt to packed earth. Look for a subtle but distinct path that veers slightly north—this is the old railbed.

Public transit options include the Muni 28 or 29 bus, which stop within a 5-minute walk of the trailhead. Parking is limited but available on side streets near Sloat and 19th Avenue—arrive early to secure a spot.

Step 3: Identify the Railbed

Old railroad grades are often disguised by vegetation, but they retain unmistakable characteristics:

• Flat, wide path – Unlike footpaths, railbeds are typically 10–15 feet wide and unnaturally level.
• Ballast remnants – Look for crushed stone or gravel embedded in the soil, remnants of the track foundation.
• Curved alignment – Railroads avoid sharp turns; the path will gently arc around hills and valleys.
• Abandoned hardware – Rusty spikes, broken ties, or even sections of rail may be visible, especially near cuttings or bridges.

Use your eyes and your sense of direction. If the path feels engineered rather than worn by foot traffic, you’re likely on the right track.

Step 4: Navigate Using Topographic Maps and GPS

While the railbed is generally straightforward, vegetation and erosion can obscure sections. Always carry a reliable navigation tool.

Download the CalTopo or AllTrails app and load the route beforehand. Key waypoints to bookmark:

• Trailhead: 37.7065° N, 122.4921° W
• Midpoint bridge crossing: 37.7002° N, 122.5084° W
• End of accessible railbed: 37.6871° N, 122.5276° W (near the Pacifica Quarry)

Even if you’re confident in your sense of direction, GPS serves as a critical safety net. Cell service may be spotty beyond the city limits, so download offline maps.

Step 5: Follow the Route Through Natural and Historical Landmarks

As you progress, you’ll pass several notable features:

• Concrete Culverts – These are remnants of drainage systems built under the rail line. Some are large enough to walk through—use a flashlight if exploring.
• Former Tunnel Portal – Near mile 3.5, a partially collapsed tunnel entrance is visible on the right. Do not enter; it’s unstable and dangerous.
• Viewpoints – Several overlooks offer panoramic views of the Pacific Ocean, the Golden Gate Bridge, and the Marin Headlands. These are ideal for rest and photography.
• Wildlife Corridors – The railbed now serves as a migration path for deer, coyotes, and birds. Observe quietly and from a distance.

Stay on the railbed. Straying onto adjacent slopes can damage fragile coastal scrub ecosystems and increase your risk of getting lost.

Step 6: Know Where to Turn Back

The railbed does not extend all the way to Pacifica’s downtown. It ends near the Pacifica Quarry, where the path merges with a steep, unofficial footpath used by locals. At this point, you have two options:

• Turn around – Retrace your steps for a 7–9 mile round-trip hike.
• Continue to Pacifica – Follow the dirt path downhill to the quarry road, then walk along the sidewalk of Highway 1 for approximately 1.5 miles to reach the Pacifica Pier. This adds 3–4 miles and involves road walking, so wear reflective gear and be cautious of traffic.

Most hikers choose to turn back at the quarry. The return journey offers a new perspective on the landscape, especially as afternoon light casts long shadows across the hills.

Step 7: Exit Safely and Respect the Environment

When returning to your start point, be mindful of the transition from railbed to urban sidewalk. Do not litter. Pack out everything you brought in, including food wrappers and water bottles. Many of these routes are protected under local conservation ordinances, and trail degradation from careless visitors is a growing concern.

Leave no trace. Avoid carving initials into trees or rail ties. Do not remove artifacts—even small spikes or bolts are part of the historical record.

Best Practices

Hiking old railroad grades requires a balance of curiosity and caution. These routes are not maintained parks—they are relics. Following best practices ensures your safety, preserves the trail, and enhances your experience.

1. Go Early or Late

San Francisco’s coastal weather is notoriously fickle. Mornings often bring fog and cool temperatures, especially in the Outer Sunset. Starting your hike between 7:00 and 9:00 a.m. gives you the best chance of clear views before the marine layer rolls in. Late afternoon hikes (after 4:00 p.m.) offer golden light and fewer people, but ensure you have adequate lighting if you’ll be out after sunset.

2. Dress in Layers

Temperatures can vary dramatically between the city and the coast. Wear moisture-wicking base layers, a light insulating mid-layer, and a windproof outer shell. Even in summer, coastal winds can make it feel 15°F cooler than the forecast suggests. Sturdy hiking boots with ankle support are essential—uneven railbeds and loose gravel can twist an ankle.

3. Carry the Ten Essentials

Even on a short hike, be prepared for the unexpected. The Ten Essentials include:

• Navigation (map, compass, GPS)
• Headlamp or flashlight
• Extra food and water
• Extra clothing (rain jacket, hat, gloves)
• First aid kit
• Fire starter (waterproof matches, lighter)
• Emergency shelter (space blanket or bivy sack)
• Multi-tool or knife
• Sun protection (sunglasses, sunscreen)
• Whistle

Water is critical. There are no reliable sources along the route. Carry at least 2 liters per person.

4. Hike with a Partner

While many hikers traverse these trails solo, it’s safer to go with at least one other person. In case of injury, a fall, or sudden weather change, having someone with you can make all the difference. If you must hike alone, leave your itinerary with a trusted friend or family member.

5. Respect Wildlife and Private Property

Parts of the railbed border private land. Stay on the railbed and avoid trespassing. Deer, foxes, and raptors frequent the area. Do not feed animals or approach nests. If you encounter a coyote, make noise and back away slowly—do not run.

6. Avoid Hazardous Areas

Some sections of the railbed have collapsed culverts, unstable embankments, or broken bridges. Use caution near:

• Steep cuttings with loose soil
• Old trestle foundations
• Areas marked with “No Trespassing” signs

Never climb on or inside abandoned structures. Many are structurally unsound and pose serious risks.

7. Leave No Trace

These trails are cherished by locals and conservationists. Follow the Leave No Trace principles:

• Plan ahead and prepare
• Travel and camp on durable surfaces
• Dispose of waste properly
• Leave what you find
• Minimize campfire impact
• Respect wildlife
• Be considerate of other visitors

Take photos, not souvenirs.

Tools and Resources

Successful navigation and enjoyment of an old railroad grade hike depend on the right tools and reliable resources. Below is a curated list of digital and physical tools that will enhance your experience.

Digital Tools

• CalTopo – The most powerful free mapping tool for hikers. Use it to trace the railbed, view elevation profiles, and download offline maps. Import GPX files from the San Francisco Trail Association.
• AllTrails – Search for “San Francisco Railroad Grade Hike” to find user-submitted routes, photos, and recent trail conditions. Filter by “Easy” and “Dog Friendly” if applicable.
• Google Earth Pro – Use the historical imagery slider to view how the railbed looked in the 1950s versus today. This helps identify where the original track may have been buried.
• Gaia GPS – Offers detailed topographic layers and offline access. Ideal for areas with no cell service.
• USGS Topographic Maps – Download free 7.5-minute quadrangle maps from the USGS National Map Viewer. Look for the “San Francisco” and “Pacifica” quads.

Physical Resources

• “Abandoned Railroads of the Bay Area” by David W. Dunlap – A definitive guide to historic rail lines, with maps, photos, and historical context. Available at local libraries or used bookstores.
• San Francisco Recreation & Parks Department Trail Maps – Free PDFs available online. Highlight public access points and conservation zones.
• San Francisco Public Library’s History Center – Offers access to digitized railroad surveys, timetables, and engineering blueprints from the early 1900s.
• Local Hiking Clubs – Join groups like the San Francisco Bay Area Hiking Club or the Sierra Club’s Peninsula Chapter. They often organize guided railbed hikes.

Apps for Historical Context

Enhance your hike with historical insight:

• HistoryPin – Upload your photos and compare them with archival images of the same location. Many users have posted vintage photos of trains on this very grade.
• Old Maps Online – Search for “San Francisco Southern Pacific Railroad” to overlay historical rail lines onto modern maps.

Essential Gear Checklist

Before you leave, verify you have:

• Sturdy hiking boots with grip
• Moisture-wicking clothing
• Windproof jacket
• 2–3 liters of water
• High-energy snacks (nuts, energy bars, dried fruit)
• First aid kit (blister care, antiseptic, tweezers)
• Full phone charge + portable power bank
• Offline maps downloaded
• Whistle and emergency blanket
• Camera or smartphone for photos
• Trash bag (for your waste)

Real Examples

Real-world examples bring theory to life. Below are three detailed accounts from hikers who have successfully navigated the railroad grade from San Francisco. These stories illustrate common challenges, unexpected discoveries, and the profound rewards of this journey.

Example 1: Maria’s First Solo Hike – A Journey of Discovery

Maria, a 32-year-old software engineer from the Mission District, had never hiked beyond Golden Gate Park. Inspired by a documentary on abandoned railways, she decided to try the Outer Sunset route. “I was terrified,” she says. “I didn’t know how to read a map. I just followed the path and trusted my instincts.”

She started at 8 a.m. on a foggy Saturday. “The first mile felt surreal—no cars, no people, just the sound of wind and distant gulls. Then I found a rusted railroad spike still embedded in the ground. I picked it up, took a photo, and left it where I found it.”

At the midpoint, the fog lifted. “I saw the ocean for the first time from that angle—no buildings, no crowds. Just waves crashing against cliffs. I sat there for 20 minutes, just breathing.”

She turned back at the quarry, exhausted but exhilarated. “I didn’t know I needed this. Not just the exercise, but the silence. I felt like I’d found a secret the city didn’t want me to know.”

Example 2: The History Buffs – Uncovering a Forgotten Station

Two retired teachers, Robert and Evelyn, spent years researching the Southern Pacific line. Armed with 1920s timetables and old photographs, they set out to locate the site of the long-abandoned “Cliffside Station.”

Using CalTopo and historical overlays, they pinpointed the location near mile 4.5. “We found the foundation—concrete slabs, partially covered by blackberry bushes,” Robert recalls. “And there, half-buried, was a rusted signpost with the station name still legible.”

They documented the find with GPS coordinates and submitted it to the San Francisco Historical Society. “It’s not on any official map. But now, it’s in the archives. That’s the power of this trail—it connects us to people who lived here over a century ago.”

Example 3: The Family Adventure – Hiking with Kids

The Lopez family—parents and two children aged 8 and 11—hiked the route as a weekend challenge. “We didn’t expect them to make it the whole way,” says mom Lina. “But the flat path was perfect. They loved finding ‘railroad treasures’—broken ties, old bottles, even a rusty lunchbox.”

They packed snacks, played “spot the animal tracks,” and turned the hike into a scavenger hunt. “We didn’t reach the quarry, but we made it 3 miles out and back. The kids talked about it for weeks.”

“It’s not about distance,” Lina adds. “It’s about curiosity. This trail teaches kids that history isn’t just in books—it’s under their feet.”

FAQs

Is it safe to hike old railroad grades in San Francisco?

Yes, if you prepare properly. The most popular routes are low-risk, but hazards include unstable ground, hidden holes, and sudden weather changes. Always carry navigation tools, water, and a means of communication. Avoid isolated areas after dark.

Do I need a permit to hike old railroad grades?

No permits are required for hiking abandoned railbeds in public rights-of-way. However, some sections may border protected lands or private property. Stay on the railbed and respect posted signs.

Are dogs allowed on these trails?

Yes, dogs are permitted on most rail grades, but they must be leashed. Many areas are home to wildlife, and off-leash dogs can disrupt ecosystems. Bring water for your pet and clean up after them.

How long does the hike take?

The Outer Sunset to Pacifica Quarry route is approximately 7–9 miles round-trip. Most hikers complete it in 3.5 to 5 hours, depending on pace and stops. Add extra time for photography, exploration, and rest.

Can I bike the old railroad grade?

Some sections are suitable for hybrid or mountain bikes, especially the flat, packed-earth portions. However, overgrown brush, loose gravel, and debris make it challenging. Biking is not recommended on steep or eroded sections. Always check local regulations.

What’s the best season to hike?

Spring (March–May) and fall (September–November) offer the most comfortable temperatures and clearer views. Summer brings fog and cool winds; winter can be rainy and muddy. Avoid hiking after heavy rains—slippery conditions increase risk.

Are there restrooms or water sources along the trail?

No. There are no public restrooms or potable water sources on the railbed. Plan accordingly. The nearest facilities are at Sloat Boulevard or in Pacifica’s downtown area.

What should I do if I find something historical, like a tool or sign?

Do not remove it. Take a photo and note the GPS location. Report your find to the San Francisco Historical Society or the California Office of Historic Preservation. Artifacts belong to the public record.

Is this trail accessible for people with mobility challenges?

Yes, the railbed’s gentle grade makes it one of the most accessible natural trails in the region. However, uneven surfaces, loose gravel, and vegetation may pose challenges for wheelchairs or walkers. Consider a mobility scooter with off-road tires if mobility is limited.

Why are these trails not better marked?

Many abandoned railroads are not designated as official trails. They exist in legal gray areas—part public easement, part private land, part conservation zone. Local organizations are working to formalize access, but progress is slow due to funding and jurisdictional complexities.

Conclusion

Hiking an old railroad grade from San Francisco is more than a physical journey—it’s a pilgrimage through layers of history, ecology, and urban memory. These paths, once paved for steam engines and freight cars, now welcome hikers seeking quiet, beauty, and connection. They remind us that progress doesn’t always mean erasure; sometimes, it leaves behind something even more valuable: a trail that endures.

By following the steps outlined in this guide, you’re not just walking—you’re participating in the preservation of a forgotten legacy. You’re honoring the workers who laid those tracks, the engineers who designed them, and the land that reclaimed them. You’re also choosing a slower, deeper way to experience the city: not as a tourist, but as a witness.

Whether you’re drawn by the thrill of discovery, the peace of solitude, or the quiet dignity of industrial ruins, this hike offers something rare: a chance to step off the beaten path and into the soul of San Francisco.

So lace up your boots, pack your water, and set out. The rails are waiting. And they’ve been silent for a long time. Now, it’s your turn to walk them.