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Grizzly Peak Trail Run

Name: Grizzly Peak Trail Run
Start: 2026-05-09
End: 2026-05-09
Location: Berkeley

Berkeley, United States • 9 May 2026

Grizzly Peak Trail Run

The Grizzly Peak Trail Run takes place in Berkeley, California, within the Tilden Regional Park. Participants navigate courses that begin at Lake Anza and travel through the park located in the Berkeley hills. All race distances are measured using a Rolatape surveyor's measuring wheel to ensure accuracy.

The event offers a variety of trail race distances to accommodate different preferences:

50K
Marathon (26.2 Miles)
30K
Half Marathon (13.1 Miles)
10K
2 Miles
50 Yards (Kid's Run for ages 6 and younger)

The registration process remains open until early May for the primary trail distances, while the shorter distances allow for later entry. The event utilizes the natural landscape of the regional park, providing a specific trail-running environment in the East Bay area. Visit the organization's website for the most recent information.

United States California Berkeley

Race information

Registration

50 km

50k

26 mi

Marathon

30 km

30k

13 mi

Half Marathon

10 km

10k

Coastal Testing

Kid's Run (6yo & Younger, 50yd Dash)

Visit the organization's website for the most recent information.

Trail runs nearby

Saturday May 2

Miwok 100K

Stinson Beach

62 mi

A well-marked *62 mile* trail ultramarathon in the Marin Headlands near Stinson Beach, CA, with over 11,000 feet of climb, a 15 hour 30 minute time limit and a 400 runner field limit. The race emphasizes low-waste practices and community in..

Saturday May 9

Muir Woods Marathon

A trail race from Stinson Beach into Muir Woods offering marathon, half marathon and 7 mile options, with technical climbs, ladder and stair sections, marked aid stations, and a field limited to 300 participants.

Saturday May 9

Ridge-to-Ridge Challenge

Walnut Creek

1 mi

5 km

An annual fundraiser at Shell Ridge Open Space in Walnut Creek supporting Sustainable Contra Costa and its youth program SLIA. Options include a 5K trail run, two 1.4 mile walking activities, and educational talks by local experts.

Saturday May 16

Napa Wilderness Trail Runs

Trail runs at Skyline Wilderness Park in Napa offer distances from 10K to 50K with steep Rim Rock climbs and valley views. Aid is touchless and parking is included with registration.