The Iditarod Trail Invitational is the world’s longest winter ultra marathon by fat bike, foot and ski and follows the historic Iditarod Trail from Knik to Nome.


Date: February 28, 2021

Time: 2:00 pm


Cost: $1575

Event Website

Organizer: Kyle Durand


One of the most challenging experiences on the planet, participants brave extreme physical, environmental and mental challenges as they work their way along the historic Iditarod Trail on bicycle, foot or skis. Requiring self-sufficiency and the considerable resilience to make it through up to 30 frozen days and nights, the Iditarod Trail Invitational has built its reputation on notoriously inhospitable conditions and minimal outside support.

For 2021, the ITI 350 will be run as an out-and-back to Rohn in order to avoid travel near the remote villages of Nikolai and McGrath. Athletes can plan on traveling from the start at Knik Lake to Rohn and back to this year’s finish on Big Lake.

Follow along live below:

For an incredibly detailed account of RJ Sauer’s Iditarod Trail journey, check out our featured story; When The Trail Goes Cold.