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Routes
Running trails & routes
United States
California
Marin County

Jepson and Johnstone Trail Loop

Hard

3.0

(20)

24

runners

Jepson and Johnstone Trail Loop

01:37

12.2km

320m

Running

Jog the difficult 7.6 miles (12.2 km) Jepson and Johnstone Trail Loop in Tomales Bay State Park, featuring shaded forests and bay views.

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Tomales Bay State Park

Waypoints

A

Start point

Parking

Get Directions

1

12 m

Heart's Desire Beach

Highlight • Beach

2

5.50 km

Shell Beach

Highlight • Beach

Paradise of a beach cove on Tomales Bay, reached by a 10 minute walk down a winding trail with a few steps at the end.

Tip by

B

12.2 km

End point

Parking

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Way Types & Surfaces

Way Types

12.2 km

< 100 m

Surfaces

12.2 km

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (160 m)

Lowest point (10 m)

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Weather

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Today

Friday 22 May

14°C

8°C

0 %

Additional weather tips

Max wind speed: 19.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it take to jog the Jepson and Johnstone Trail Loop?

The full loop is approximately 12.2 kilometers (7.6 miles) long. For jogging, it typically takes around 1 hour and 37 minutes to complete, though this can vary based on your pace and stops.

Is the Jepson and Johnstone Trail Loop suitable for beginners?

The full Jepson and Johnstone Trail Loop is rated as 'difficult' for jogging due to its length and elevation changes. While some sections are easier, the overall route includes moderate to steeper climbs and descents with switchbacks. Beginners might find shorter segments more manageable.

Where does the Jepson and Johnstone Trail Loop start, and is there parking available?

The trail is located within Tomales Bay State Park. Specific trailhead access points are available within the park, and parking is typically provided at designated areas. You will need to pay an entrance fee to access the park.

What is the terrain like on the Jepson and Johnstone Trail Loop?

The terrain is varied and scenic. You'll jog through mostly shaded forests with a soft carpet of fir needles, bay, and oak leaves. There are gentle to moderate climbs, some steeper descents with switchbacks, and wooden bridges crossing marshy creek areas. Occasional paved private access roads also need to be crossed.

What can I see along the Jepson and Johnstone Trail Loop?

The loop offers diverse scenery, including impressive forests of Bishop pine, Bay, Toyon, and Oak trees. You'll pass through the unique Jepson Memorial Grove and can enjoy picturesque views overlooking Tomales Bay. The route also provides access to beautiful beaches such as Heart's Desire Beach and Shell Beach, as well as the secluded Pebble Beach and Indian Beach.

What wildlife or plants can I expect to see?

The trail is rich in natural beauty. You'll encounter diverse flora including Bishop pine, Bay, Toyon, and Oak trees, along with various ferns. Keep an eye out for huckleberries, blackberries, currants, and even banana slugs. Birdwatching opportunities are also common in the area.

Is the Jepson and Johnstone Trail Loop dog-friendly?

Dogs are generally allowed on leash in Tomales Bay State Park, but specific trail regulations can vary. It's always best to check the current rules for the Jepson and Johnstone Trail Loop directly with the park before your visit to ensure compliance.

Do I need a permit or pay an entrance fee for the Jepson and Johnstone Trail Loop?

Yes, the Jepson and Johnstone Trail Loop is located within Tomales Bay State Park, which typically requires an entrance fee per vehicle. No additional permits are usually needed for day-use hiking or jogging on the trails, but it's always good to verify current park regulations.

What is the best time of year to jog the Jepson and Johnstone Trail Loop?

The trail is mostly shaded, making it a good option for warmer days. Spring and fall offer pleasant temperatures and vibrant scenery. Even in summer, the shade provides respite from the sun. Winter can be beautiful, but be prepared for potentially wet and muddy conditions.

Does the Jepson and Johnstone Trail Loop intersect with other trails?

Yes, the route primarily follows sections of the Johnstone Trail and the Jepson Trail. It also briefly touches upon the Indian Beach Nature Trail, offering a comprehensive experience of the park's diverse paths.

Are there any viewpoints along the route?

Yes, throughout the run, there are scenic spots with excellent views overlooking Tomales Bay, providing picturesque opportunities to pause and enjoy the landscape.

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