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Diablo Trail Run

Diablo Trail Run is a running and trail running race on September 6, 2026 in Clayton, CA, with entry fees from $50 to $90.

Date
September 6, 2026 (45 days to go)
Price
$50–$90
Sports
RunningTrail Running
Register →

From the Organizer

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.)

Events

Kid's Run (6yo & younger, 50yd dash) - Free!
10 Mi$60
Half Marathon$70
Marathon$80
50K$90
4 Mi$50
Coastal Testing

Weather

Typical Conditions

It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.

Typical High

82°

Typical Low

61°

Chance of Rain

2%

Based on US Climate Normals data from Mt Diablo Junction, 3 mi from the venue.

Sunrise 6:41 AMSunset 7:29 PMDaylight 12h 47m

Host City

About Clayton, CA

City Elevation

897 ft

Nearest Airport

OAK

San Francisco Bay Oakland International Airport · 22 mi

Time Zone

Pacific Time

From Endurance Grid

Line up lodging and travel early to lock in your race weekend.

Race Location

Your Next Start Line

What Are You
Waiting For?

Every finish line starts with a single decision. Claim your spot at Diablo Trail Run, put it on the calendar, and turn “someday” into a start date.

45

Days to train

Race
Diablo Trail Run
Date
September 6, 2026

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From Endurance Grid

About These Sports

This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.

Running

From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Trail Running

Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.

Plan your trip

Make it a Racecation

Coming from out of town? There's more to Clayton than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.

Plan your trip to Clayton
Lodging
Flights
Rental Car
Activities

Frequently Asked Questions (FAQs)

What is the Diablo Trail Run?+
Diablo Trail Run is a running and trail running race held in Clayton, California on September 6, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
When and where is the Diablo Trail Run?+
Sunday, September 6, 2026 in Clayton, California at Diablo State Park (Mitchell Canyon Trailhead). Check the event page for exact start times and wave schedules.
How do I register for the Diablo Trail Run?+
Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.

Diablo Trail Run

Sep 6, 2026

Register →