2026 Mammoth Winter Marathon
CA 93546 United States
REGISTRATION
Marathon - Adults
Please use the QR code below to sign the Tamarack (Mammoth Mountain Ski Resort) Winter waiver.
By proceeding with this registration you warrant that you have signed the Tamarack waiver online. Note that all participants are required to sign the waiver.
| REGISTRATION STARTING | REGISTRATION ENDING | PRICE |
|---|---|---|
| February 26, 2026, 12:00 AM PST | March 27, 2026, 11:59 AM PST | $85.00 |
Half Marathon - Adults
Please use the QR code below to sign the Tamarack (Mammoth Mountain Ski Resort) Winter waiver.
By proceeding with this registration you warrant that you have signed the Tamarack waiver online. Note that all participants are required to sign the waiver.
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| REGISTRATION STARTING | REGISTRATION ENDING | PRICE |
|---|---|---|
| February 26, 2026, 12:00 AM PST | March 27, 2026, 11:59 AM PST | $85.00 |
Half Marathon - U16 & U18 Juniors
Please use the QR code below to sign the Tamarack (Mammoth Mountain Ski Resort) Winter waiver.
By proceeding with this registration you warrant that you have signed the Tamarack waiver online. Note that all participants are required to sign the waiver. Participants under the age of 18 should have a parent sign the waiver, please.
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| REGISTRATION STARTING | REGISTRATION ENDING | PRICE |
|---|---|---|
| February 26, 2026, 12:00 AM PST | March 27, 2026, 11:59 AM PST | $45.00 |
10 KM - Adults
Please use the QR code below to sign the Tamarack (Mammoth Mountain Ski Resort) Winter waiver.
By proceeding with this registration you warrant that you have signed the Tamarack waiver online. Note that all participants are required to sign the waiver.
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| REGISTRATION STARTING | REGISTRATION ENDING | PRICE |
|---|---|---|
| February 26, 2026, 12:00 AM PST | March 27, 2026, 11:59 AM PST | $85.00 |
10 KM - U12 & U14 Juniors
Please use the QR code below to sign the Tamarack (Mammoth Mountain Ski Resort) Winter waiver.
By proceeding with this registration you warrant that you have signed the Tamarack waiver online. Note that all participants are required to sign the waiver. Participants under the age of 18 should have a parent sign the online waver
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| REGISTRATION STARTING | REGISTRATION ENDING | PRICE |
|---|---|---|
| February 26, 2026, 12:00 AM PST | March 27, 2026, 11:59 AM PST | $45.00 |
5 KM - U14 and under Juniors
Please use the QR code below to sign the Tamarack (Mammoth Mountain Ski Resort) Winter waiver.
By proceeding with this registration you warrant that you have signed the Tamarack waiver online. Note that all participants are required to sign the waiver. Participants under the age of 18 should have a parent sign the online waiver.
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| REGISTRATION STARTING | REGISTRATION ENDING | PRICE |
|---|---|---|
| February 26, 2026, 12:00 AM PST | March 27, 2026, 11:59 AM PST | $25.00 |
EVENT INFORMATION
The Mammoth Winter Marathon is a long standing tradition at Tamarack -- this year marks the 47th running of the event.
The Mammoth Winter Marathon offers a choice of races: Marathon, Half Marathon, 10km , and a Junior 5km.
A t-shirt, raffle ticket, and lunch are included in the entry fee. Join us for the Awards Lunch at 1:30 pm at the Mammoth High School where lunch will be catered by Skadi.
Note that the races start at 9:00 AM. The race will start at the Pack Station, so be sure to allow adequate time to ski up there.
This race is a fundraiser for ESNSA in support of our Junior Nordic Racing program -- thank you for your support!
