Join the Half Marathon Community!

Subscribe for news on races, community updates and more!

See on your My Runs page!

Diablo Trail Run

September 10, 2023

Clayton, CA

Run the Diablo Trail Run in Clayton, California on 10 September 2023 and experience the beauty of the California hills! Challenge yourself to a half marathon and enjoy the views on this scenic course.
Run the Diablo Trail Run in Clayton, California on 10 September 2023 and experience the beauty of the California hills! Challenge yourself to a half marathon and enjoy the views on this scenic course.
Participants run the half marathon Diablo Trail Run in Clayton, California in September!
Run a Half Marathon This Year!

Find a Half Marathon!

Search over 3,000 half marathons in the US to find a race near you. Set a half marathon goal and get a training plan. Here’s to 13.1 miles!

Search half marathons near you by state or by month

About The Diablo Trail Run

Diablo Trail Run in Clayton, California is one of the most scenic and challenging half marathons around. The race takes place on September 10th, 2023 and is sure to be a memorable event.

The route starts at Mt. Diablo State Park and winds through the park’s oak-studded trails, offering spectacular views of the surrounding hillsides. It then follows single track trails into Morgan Territory Regional Preserve before looping back onto Mt Diablo State Park for a finish line celebration with friends and family awaiting your arrival! With an elevation gain of 2200 feet over 13 miles, this course will challenge even experienced runners while providing beautiful scenery along the way.

September weather in Clayton is typically sunny with highs averaging from 75-80 degrees Fahrenheit during this time . This makes it an ideal setting for running as temperatures are generally comfortable but not too hot for long distances.

Crowds can vary depending on the year but there will likely be plenty of other runners sharing their enthusiasm alongside you throughout your journey as well as spectators cheering you on from certain points along the way . The atmosphere created by these individuals create an uplifting energy that helps fuel motivation throughout all 13 miles!

Overall, Diablo Trail Run has something unique to offer every runner: stunning views, good weather conditions , varied terrain , and strong support from fellow participants make it a truly special experience that should not be missed ! Whether you’re training for your first half marathon or looking to improve upon previous finishes times , rest assured knowing that you’ll have everything necessary to reach your goals when participating in this incredible race!