Course Information

"The Summit is just the halfway point."

Ed Viesturs
High-altitude Mountaineer

The 5K, 10K, half marathon, and 30K courses are on dirt trails in Castle Rock and Mount Diablo State Park.

COURSE MAPS AND ELEVATION CHARTS

30K Course Map
30K Elevation Chart

Half Marathon Course Map
Half Marathon Elevation Chart

10K Course Map
10K Elevation Chart

5K Course Map
5K Elevation Chart

TIME LIMITS

Overall

The 30K will start at 8:15 am and the course will have a time limit of 6.5 hours.

On-Course Cut-Offs

30K runners must reach the following aid stations by the times listed:

Aid Station #3 (helipad aid, first visit at approximately mile 9): 11:15

Aid Station #4 (summit aid, approximately mile 12): 12:45

Aid Station #5 (helipad aid, second visit at approximately mile 15): 1:45

30KERS: MAKE A DEAL WITH EL DIABLO

If you are in the 30K and you reach Aid Station #3 (mile 9) any time before 12:30, you will be allowed to "make a deal with El Diablo" and switch to the half marathon mid-race. Those who take the deal will be counted as official finishers of the half marathon, but will not be eligible for any overall or age group awards. Instead of being listed with an age group division, their results will be listed in the "surrender" category.

HALF MARATHON CUT-OFFS

Half marathon runners must reach Aid Station #3 (helipad aid, approximately mile 9) by 12:30. If any half marathon participant arrives at this aid station after 12:30, they will be asked to accept a ride back to the start area.

COURSE MARKING

All participants can pick up a copy of their appropriate course map on race day.

Each course will be marked with colored ribbons that are unique to their distance, so that runners know they are on the correct course.

AID STATIONS

As with all of our races, aid stations will be fully stocked with water, sports drink, gels, pretzels, candy, etc.

Runners who may need more water, should carry their own water bottle.

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