Race Discovery
Diablo Trail Run
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Diablo Trail Run

Clayton, California, United States
Sep 06, 2026
Trail running

About this race

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.)

Pick your distance

Trail running

4 Mi

Sep 06, 2026 6.4K 8:15 AM
$50.00
Open

10 Mi

Sep 06, 2026 16.1K 8:00 AM
$60.00
Open

Half Marathon

Sep 06, 2026 Half-Marathon 8:00 AM
$70.00
Open

Marathon

Sep 06, 2026 Marathon 8:00 AM
$80.00
Open

50K

Sep 06, 2026 48.9K 8:00 AM
$90.00
Open

Running

Coastal Testing

Sep 06, 2026 3.2K 8:25 AM
Free
Open

Typical race-day weather

Based on 5 years of historical conditions on this event's race dates in Clayton.

Temp (°C)
Minimum temperature (race-day average) 14.6° / Maximum temperature (race-day average) 28.5°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-day average) 14.6° / Maximum feels like — heat index / wind chill (race-day average) 30.5°
Wind (km/h)
Average wind speed (race-day average)
18.7
Precip (mm)
Average precipitation (race-day average)
1.7mm
Humidity
Average relative humidity (race-day average)
61.8%

About Clayton

Diablo Trail Run takes place in Clayton, California, United States. The local timezone is America/Los_Angeles.

View on Google Maps

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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.

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