Diablo

Race Day Information

alt

Directions

The Diablo Trail Run will be held on 8:00 a.m. (4 mi at 8:15 a.m.) on Sunday, Aug 27th at the Diablo State Park, Mitchell Canyon Trailhead. Parking is $6 per vehicle.

Parking is limited at Mitchell Canyon. We encourage you to carpool with other runners. Vehicles with 2 or more participants will park at the Mitchell Canyon parking lots near the start/finish. All others will be directed to park 1.5 miles from the start along Pine Hollow Road. We will have a shuttle running between Pine Hollow Road and Mitchell Canyon before and during the event. If you're driving alone, you're welcome to pick up a fellow runner at Pine Hollow Road and then park near the start at Mitchell Canyon.

Click on the blue icon for driving directions:


View Diablo Trail Run in a larger map

Weather

Clayton

Course

The course will be marked with ribbon approximately every 200 yards and color coded as follows:

  • 4 mi – Yellow (out/back along Mitchell Canyon)
  • 10 mi – Orange (turnaround at Juniper, 1st aid station)
  • Half Marathon – Orange (turnaround at Summit)
  • Marathon – Orange + Green Summit Loop + Pink Loop + Orange to Finish
  • 50 Km – Orange + Green Summit Loop + Pink LoopGreen Summit Loop (on return at 21 miles) + Orange to Finish

Time Limit and Cut-Off

Marathon -9 hrs (3 hrs, 11:00 a.m. @ 9 mi)

50 Km - 9 hours (2 hrs 45 min, 10:45 a.m. @ 9 mi; 6.6 hrs, 2:35 p.m. @ 21 mi)

The most important course marking is the polka-dot flagging. It indicates a turn at an intersection. There will be at least two polka-dot flagging before a turn in the course. The polka-dot flagging will be placed before and on the same side as the required turn. As you approach an intersection, look for any polka-dot flagging 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 orange, yellow,and/or pink flagging indicating the correct route. We also hang blue ribbons at critical junctions indicating the wrong way. Blue is bad!

If you don't see your respective flagging 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.

Please be courteous on the trail. If you're passing another runner or hiker, announce "on your left" as you approach.

Headphones are allowed on dirt road sections only. Please do not wear headphones on single-track trail, while crossing paved roads, when getting aid at aid stations, or while crossing the finish line.

Your bib number indicates the distance that you're running. If you want to change your distance, please send us an e-mail or let us know by check-in, at the latest.

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.

Aid Stations

Fully-stocked aid stations every 3 - 5 miles. You can expect fresh fruit, salty snacks, assorted candy, water, and Clif Shot Electrolyte sports drink. If you would like to be sure that you have 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.

  Distance (mile) Next Aid (mile)
4 mile    
1. Mitchell Canyon (Finish)
3.9
 
10 mile
1. Juniper Campground
5.1
5.1
2. Mitchell Canyon (Finish)
10.2
 
Half Marathon
2. Juniper Campground
5.1
3.2
2. Juniper Campground
8.3
5.1
3. Mitchell Canyon (Finish)
13.4
 
Marathon
1. Juniper Campground
5.1
4.3
2. Juniper Campground
9.3
4.2
3. North Gate
13.5
4.6
4. Rock City
18.1
2.9
5. Juniper Campground
21.0
5.1
6. Mitchell Canyon (Finish)
26.1
 
50 Km
1. Juniper Campground
5.1
4.3
2. Juniper Campground
9.3
4.2
3. North Gate
13.5
4.6
4. Rock City
18.1
2.9
5. Juniper Campground
21.0
4.3
6. Juniper Campground
25.3
5.1
7. Mitchell Canyon (Finish)
30.4

Post-Run Activities

Award medals are given to the 1st female and male finishers overall and top three finishers in each age group. All finishers will receive a custom medal and 50 Km finishers will also receive a custom coaster.

Message Board

The Coastal Message Board is for information about Coastal events. Please post messages regarding places to eat or stay, sharing rides with fellow runners, etc. Go to Message Board (opens in a new window).

Check In

Please arrive 30 min before your event to receive your bib number.