Toughest 300 miles in Alaska.
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The 2025 race is the 36th running of the CB300!
Race Start: January 11th, 2025 • 10am
Support CB300 by purchasing merchandise.
There are many variations of each product and we are working hard on adding more. By purchasing these items, you support the CB300! Without you and many dedicated volunteers, we could not run this race year after year. Know you are appreciated! Thanks to our generous donors such as locals artists, some of the CB300 merchandise is designed and donated by Karolina Zakravska.
The Copper Basin 300 is a 100% volunteer-based race that starts in Glennallen, AK every year during the second weekend of January.
The CB300 first started in 1990 and was founded with the purpose of supporting local businesses in the slow winter months. This year is the 36th running of the race.
Every little bit of help counts. Become a mile sponsor for the 2025 race!
As a volunteer, non-profit organization, we appreciate all the help we can get to put this race on year after year! Sponsoring a mile is a great way to support us. At the banquet after the race, we will raffle off (6) different special CB300 merchandise packages to (6) lucky mile sponsor donators!