All races
Cycling

Mammoth Gran Fondo

Mammoth Gran Fondo takes place on Sat, Sep 11, 2027 in Mammoth Lakes, United States. The main route is 164.2 km.

Date
Sat, Sep 11, 2027
Start
Mammoth Lakes 🇺🇸
Distance
164.2 km
Climbing
2,074 m
Level
Open to all
Add race day to your calendar

Your 44-week plan to Mammoth Gran Fondo

The Base phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.

Build my plan

Free to start · No credit card

The Mammoth Gran Fondo is a high-alpine road cycling event in California’s Eastern Sierra, with scenic mountain roads and approximately 75 miles of its Gran Fondo route closed to through traffic.

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

Your road to race day

Race day at Mammoth Gran Fondo is 44 weeks away. This is how a coach divides that time. The first phase starts now.

  1. 01Base32 weeks · Nov 8, 2026 – Jun 19, 2027

    Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.

  2. 02Build6 weeks · Jun 20, 2027 – Jul 31, 2027

    Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.

  3. 03Peak3 weeks · Aug 1, 2027 – Aug 21, 2027

    The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.

  4. 04Taper2 weeks · Aug 22, 2027 – Sep 4, 2027

    Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.

  5. 05Race week1 week · Sep 5, 2027 – Sep 11, 2027

    Openers, rest and logistics. The work is done; the job now is arriving fresh.

Get this plan built around your own fitness

Frequently asked questions

When is Mammoth Gran Fondo?

Mammoth Gran Fondo takes place on Sat, Sep 11, 2027 in Mammoth Lakes, United States.

How long is Mammoth Gran Fondo?

The main route is 164.2 km.

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

Organising this race?