Rise to the challenge!
The longer you go, the more you see and experience! Courses are all on dirt trails, heading out from Castle Rock park in Walnut Creek, heading into Mount Diablo State Park -- all the way to the summit for the 50K.
2018 START TIMES
These courses run on dirt trails with the 50K, half marathon and 10K including sections of single track.
Water stations will be stocked with water, sports drink, gels, pretzels, candy, etc.
We recommend all 10K and half marathon runners carry at least 2 bottles or a large hydration pack (or both).
The 50K water stations, their distance into the race and their cut-off times are as follows:
Rock City: 6.2 (no cut-off)
CCR: 12.5 (no cut-off)
Curry Point: 15.6 (cut-off = 11:30 am)
Summit: 19 (cut-off = 1:30 pm)
Juniper: 25.5 (cut-off = 3:30 pm)
Burma: 28.4 (cut-off = 4:45 pm)
The half marathon will have 4 aid stations (at miles 1.1, 2.8, 7.8 and 12.36).
The 10K will have 3 aid stations (at approximately miles 1.1, 2.8 and 5.1).
The 5K will have an aid station located shortly before the turn around point (about mile 1.1 and then again at mile 2).
COURSE TIME LIMITS
The 50K will start at 6:30 am and the course will have a time limit of 11 hours.
All runners must also reach and depart the aid stations below before the noted times:
Curry Point (mile 15.6): 11:30 am
Summit (mile 19): 1:30 pm
Juniper (mile 25.5): 3:30 pm
Burma (mile 28.4): 4:45 pm
The half marathon will start at 8:30 am and the course will have a time limit of 4.5 hours. Runners must reach the 3rd aid station, Curry Point (mile 7.9) by 11:30 am.
Pacers will be allowed for the 50K runners, starting at the Curry Point aid station (mile 16.3). All pacers are required to check in at the aid station and sign a waiver. There is no transportation provided for pacers.
Thank you to our race sponsors, through their contributions, our sponsors help keep entry costs down and expose our runners their outstanding products and services. Learn more about becoming a sponsor.