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Mount Diablo Summer Trail Run 

8 Km, 25 Km & 50 Km

Run-day Instructions



The Mount Diablo Summer Trail Run will start at 8:30 a.m. on Saturday, June 10th at Mitchell Canyon Trailhead. From Walnut Creek, take Ygnacio Valley Rd. toward Clayton for 7 miles.  Turn right on Clayton Road.  Go 1 mile to Mitchell Canyon Road and turn right.  Follow this Mitchell Canyon Road for 1.5 miles into the Park.  Click on this Map for more detailed driving directions.  Park entrance fee is $3 per vehicle.



The course will be marked with yellow (8 Km) and pink (25 Km & 50 Km) ribbon approximately every 200 meters. 


The most important course marking is the striped ribbonIt indicates a turn at an intersection.  There will be at least two striped ribbons before a turn in the course.  The striped ribbons will be placed before and on the same side as the required turn.  As you approach an intersection, look for any striped ribbons before the turn.  Waiting until you're in the intersection to determine the correct direction may be confusing and you may go the wrong way.  After you complete the turn, there will be yellow (8 Km) and/or pink (25 Km & 50 Km) ribbons indicating the correct route.


If you don't see your respective ribbon for 3-4 minutes, you are off course.  If you get off course, you should retrace your path until you find where you left the course and then continue along the marked course. 


Many of the parks in California have poison oak. We recommend staying on the trail and washing with Tecnu after your trail run. Occasionally, bees or yellow jackets may be active and precautions should be taken if you're allergic.


No dogs allowed on the course. Please don't leave pets in your vehicle.



Course Map


Course Description


Elevation Gain:

  8 Km - 1,170 feet 

25 Km - 4,450 feet 

50 Km - 8,900 feet

(Elevation changes determined using an Avocet altimeter.)

Aid Stations

Fully-stocked aid stations every 8 kilometers. You can expect fresh fruit, salty snacks, assorted candy, boiled potatoes & salt, water, and Conquest sports drink. If you would like to be sure that you have Clif product, SaltStick capsules, or any other specific item at the event, you should carry it with you. Additionally, it is highly recommended that runners carry at least 20 oz. of water between aid stations. 


  25 Km

Distance (Km) Next Aid

1. Juniper Campground



2. Juniper Campground



3. Mitchell Canyon Trailhead (Finish)  25.0   



50 Km

Distance (Km) Next Aid Cut-off

1. Juniper Campground




2. Juniper Campground



3. Mitchell Canyon Trailhead (Start/Finish) 25.0


12:45 p.m.
4. Juniper Campground 33.3 8.5  
5. Juniper Campground 41.8 8.3  
6. Mitchell Canyon Trailhead (Finish) 50.1   5:30 p.m.


Post-Run Activities

There will be hot soup and chili at the finish line.

T-shirts will be given to all finishers.  While awards are given to the first female and male finishers, PCTR events are designed to be non-competitive, encourage the enjoyment of trail running, and emphasize personal achievement. 

We will have Vasque trail running shoes, Ultimate Direction bottles & packs, Clif Bar products, and PCTR merchandise available for purchase.


Clif Bloks (3)


Clif Shots (6)




Event T-shirt (Hanes 100% cotton) $8
Running Socks (sock guy) $10
Tote Bag $10
Running Hat (embroidered) $12
Gaiters $15
Dri-release Performance Shirt $15
Mini Foot Care Kit $20

Laser-engraved Cutting Board



Check In

Please arrive by 8:15 a.m. on Saturday to check in and receive your bib number.   If you have any questions between now and then, please feel free to e-mail us.


Wendell and Sarah

[email protected]


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