Mammoth Gran Fondo took place on Sat, Sep 12, 2026 in Mammoth Lakes, United States. The main route is 164 km.
This race has already taken place. See upcoming races
- Date
- Sat, Sep 12, 2026
- Start
- Mammoth Lakes 🇺🇸
- Distance
- 164 km
- Climbing
- 2,074 m
- Level
- Open to all
Got a race in mind?
Use IntervalCoach to train for your next event, an AI coach that builds your plan and adapts it every day.
Start freeA high-altitude Eastern Sierra road gran fondo, its headline century climbing from an 8,000 ft base. — 164 / 113 / 68 km · 2,074 m climb · start 07:00
What this race demands
The Mammoth Gran Fondo requires sustaining steady power across 164 kilometers and 2,074 meters of climbing, all performed at a minimum base elevation of 8,000 feet.
High-Altitude Aerobic Capacity
Starting and riding entirely above an 8,000-foot base places a continuous ceiling on oxygen uptake, requiring athletes to manage their aerobic thresholds carefully.
Sustained Climbing Efficiency
Accumulating 2,074 meters of elevation over a long-distance road route demands consistent pacing on ascents without spiking heart rate.
Long-Distance Durability
A 164-kilometer distance requires muscular endurance and positional comfort for a saddle time lasting many hours.
Given the duration of the event, athletes should target 60 to 90 grams of carbohydrates per hour to maintain energy output.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
6:45–8:10
Peak-week training
6–8 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Frequently asked questions
When is Mammoth Gran Fondo?
Mammoth Gran Fondo took place on Sat, Sep 12, 2026 in Mammoth Lakes, United States.
How long is Mammoth Gran Fondo?
The main route is 164 km.
What does Mammoth Gran Fondo demand?
The Mammoth Gran Fondo requires sustaining steady power across 164 kilometers and 2,074 meters of climbing, all performed at a minimum base elevation of 8,000 feet.
How much climbing does Mammoth Gran Fondo have?
Mammoth Gran Fondo has 2,074 m of climbing.
Who is Mammoth Gran Fondo for?
Mammoth Gran Fondo is open to all participants.
Similar races
Ride Santa Barbara 100
Gran Fondo Hincapie Greenville
Life Time Big Sugar Gravel
Chino Grinder (45-mile Fine Grind)
Organising this race?