DateExpected
Mid May 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Mike Hess Brewing, 1347 Tavern Rd, Alpine, CA 91901
Alpine, San Diego County
Countdown
May
The full 100 miles of San Diego backcountry gravel, with over 3,300 m of climbing. This is the big day, so plan for a long one.
Key facts
01Unmarked route, so you navigate by GPS
02Be self-sufficient; only two aid stations over 161 km
03Tires of 40 mm or wider recommended
Create a free training plan for the Great Western Reroute 161 km
7-day free trial, no card required
The course
The route
Alpine
Distance161km
Total climb3,353m
StartElevation
0 kmDrag map to rotate142.9 km
Weather
Mid-May, Alpine
25°CTypical high
11°CTypical low
6°CColdest in 20 years
6%Days with rain
Highs around 25°C and lows around 11°C, but it has dropped to 6°C. Rain on 6% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
Training
Training for the Great Western Reroute 161 km
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 Great Western Reroute 161 km plan targets
Typical sessions
161 km with 3,353 m of climbing
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Sustained climbing repeats on real gradients
Group rides for drafting and bunch-riding skills
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 Great Western Reroute 161 km plan.
7-day free trial, no card required.
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