Acorn Creek Trail Run
Oct 24Pilot Hill, CAHalf Marathon, 10K
Half Marathon, 7 weeks before race day, 7 mi away, registration open
Aid stations, cutoffs and pacing in one plan, with the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planRace day
Dec 12, 2026
Registration openings and major changes, like a new date or a cancellation.
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
Oct 24Pilot Hill, CAHalf Marathon, 10K
Half Marathon, 7 weeks before race day, 7 mi away, registration open
Oct 24Pollock Pines, CA50K, Marathon +5
17 mi, 7 weeks before race day, 27 mi away
Nov 14Sacramento, CAHalf Marathon, 10K +2
Half Marathon, 4 weeks before race day, 33 mi away, registration open
Nov 14Sacramento, CAHalf Marathon, 10K +2
Half Marathon, 4 weeks before race day, 33 mi away, registration open
Straight-line distance
Oct 10Auburn, CA50K, 13 mi +1
Also 50K, 3 mi from Doomsday, registration open
Apr 22, 2027Auburn, CA100 mi, 100K +2
Also 50K, 3 mi from Doomsday, registration open
Straight-line distance
Oct 8Big Bear Lake, CA100 mi, 100K +2
Oct 10Auburn, CA50K, 13 mi +1
Oct 10Silverado, CA50 mi, 50K +1
Oct 11Susanville, CA50K, Marathon +2
Oct 17San Diego, CA50K, 23 mi +4
Oct 17Redding, CA50K, 20 mi +1
Oct 17Julian, CA50K, Marathon +1
Oct 24Goleta, CA100 mi, 100K +1
Oct 24Agoura, CA50K, Half Marathon +1
Oct 24Bishop, CA50K, 33K +2
Oct 24Pollock Pines, CA50K, Marathon +5
Oct 31San Juan Capistrano, CA50K, Marathon +3
Mar 20, 2027Cool, CA50K, 25K +1
Jun 5, 2027Cool, CA
Apr 3, 2027Cool, CAHalf Marathon
Oct 17Cool, CAHalf Marathon, 10K +1
Nov 26Cool, CA10K, 5K
Jul 10, 2027Auburn, CAHalf Marathon
Jan 9, 2027Auburn, CA50K, 35K +2
Mar 13, 2027Auburn, CA12 mi, 6 mi
Mar 27, 2027Auburn, CA35K, Half Marathon +2
Apr 22, 2027Auburn, CA100 mi, 100K +2
Nov 14Auburn, CA50K, Half Marathon +2
Dec 5San Jose, CA50K, Marathon +5
Dec 5San Rafael, CA30K, Half Marathon +1
Dec 6San Francisco, CA50 mi, 50K
Dec 12Livermore, CA10K, 5K
Dec 12Pilot Hill, CA50K, Marathon +4
Dec 19Sacramento, CA10K, 5K
Dec 19Redwood City, CA50K, 35K +2
Dec 24Placerville, CAHalf Marathon, 15K +2
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
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