Diablo Trail Run

Race Date

Sep 6, 2026

Location

Clayton, CA

The Experience

Mount Diablo provides spectacular views of the San Francisco Bay Area and surrounding valleys. The 4 mile course is relatively flat and fast within Mitchell Canyon. The longer events are mountainous and very scenic. (Distances are accurately measured using a Rolatape® surveyor's measuring wheel.)

Logistics

Race Day

Sunday, September 6, 2026

Start Time

8:00 AM

Giveaway

T-Shirt

Start Location

Diablo State Park (Mitchell Canyon Trailhead), Clayton, CA, 94517

Directions

Course Info

Course Type

Loop Course

Terrain

road

Difficulty

Ultra-Flat

Also Offers

4 Miles10 Miles26.2 Miles30.4 Miles

Historical Performance

Median Finish

3:12:28

14:42/mi

Winning Time

1:52:02

8:33/mi

Finishers (2025)

States Represented

3 / 50

Gender Split

26% Female74% Male

Finish Time Distribution

1:505:30

FASTER 25%

2:45:20

MEDIAN

3:12:28

SLOWER 25%

3:53:03

Average runner age: 43

See Full Results

Race Day Weather

5-year historical avg

Start (Low)

62°

Afternoon (High)

90°

Hot conditions — adjust pace expectations, prioritize hydration

0.0"

Precipitation

11 mph

Wind

48%

Humidity

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