Date
Fri, 30 Apr 2027
Start
06:00
Venue
South parking area of Lake Cuyamaca Recreation Area, near Julian, California
California
Countdown
April
A proper 100 miler on mostly singletrack, and a gentle one for the distance: 4,755 m of climbing over 161 km. You get 32 hours, and the race has run since 2001.
Key facts
01Entry needs a 50-miler in 13 hours or less, or a finished 100K or 100 miler
02Volunteer 6 hours before 24 April 2027, or donate $105 instead
0332-hour cutoff; 16 aid stations, with drop bags at 8 of them
Create a free training plan for the San Diego 100 Mile Endurance Run
7-day free trial, no card required
The course
The route
California
Distance161km
Total climb4,755m
StartElevation
0 kmDrag map to rotate128.2 km
Weather
Late-April, California
17°CTypical high
4°CTypical low
-5°CColdest in 20 years
12%Days with rain
Highs around 17°C and lows around 4°C, but it has dropped to -5°C. Rain on 12% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
2026 results
Who finishes, and how
#RiderTimeAvg speed
01Laura Liedle23:26:236.9 km/h
02Kelly Young24:31:476.6 km/h
03Alyssa Malley25:23:086.3 km/h
31
Women finishers
1d 5:31:24
Median time
5.5 km/h
Median speed
Women · 2026 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
OrganiserSan Diego 100 race organization; race directors BJ Haeck and Rich Morrison
Websitesandiego100.com
Instagram@san_diego_100
Running since2001
Training
Training for the San Diego 100 Mile Endurance Run
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a San Diego 100 Mile Endurance Run plan targets
Typical sessions
161 km with 4,755 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Hill reps and vert to prepare the climbs and descents
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your San Diego 100 Mile Endurance Run plan.
7-day free trial, no card required.
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