Date
Sun, 28 Feb 2027
Venue
Five rounds in California: Ukiah, Maxwell, Monte Rio, and Caspar
Caspar, Mendocino County
Countdown
February
Huffmaster is the long one: 143 km of gravel, but only 1,290 m of climbing. It's a day of distance more than hills, so pacing and stamina matter most.
Key facts
01No license required
02E-bikes are not permitted
Create a free training plan for the Grasshopper Adventure Series 143 km
7-day free trial, no card required
The course
The route
Caspar
Distance143km
Total climb1,289m
StartElevation
0 kmDrag map to rotate147.5 km
Weather
Late-February, Caspar
11°CTypical high
7°CTypical low
1°CColdest in 20 years
43%Days with rain
Highs around 11°C and lows around 7°C, but it has dropped to 1°C. Rain on 43% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserHopper Adventures LLC (Miguel Crawford)
Instagram@grasshopperadventureseries
Running since1998
Training
Training for the Grasshopper Adventure Series 143 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 Grasshopper Adventure Series 143 km plan targets
Typical sessions
143 km with 1,289 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
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 Grasshopper Adventure Series 143 km plan.
7-day free trial, no card required.
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