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Kodiak Ultra Marathons

Big Bear Lake, CA


We are pleased to announce that Kodiak Ultra Marathons by UTMB has become the latest trail running event to be added to the UTMB® World Series portfolio!
We are excited that Kodiak Ultra Marathons is joining the UTMB Family! The race itself will remain largely the same, with the same race team leading the event. As part of the UTMB World Series, finishers of the 100-Mile, 100K, 50K and Half Marathon (21K) will get to collect Running Stones and have the opportunity to try their chance at competing in the UTMB World Series Finals at UTMB Mont-Blanc.

Kodiak Ultra Marathons by UTMB® takes place in Big Bear Lake, California from October 13-15, 2023. There will be five distances over the race weekend: 100-Mile, 100K, 50K, Half
Marathon (21K), 10K. This race offers runners the hospitality of a rustic, mountain town and a weekend-long festival for you and your support crew. With 3 days of racing and 5 distances, each course presents a unique running experience. Runners will enjoy views of Big Bear Lake throughout their journey – whether you’re climbing to the top of Sugarloaf Mountain or descending into Siberia Canyon, the courses will ‘wow’ you at every turn. UTMB Index Priority Registration opens May 8 th and General Registration opens May 10 th , 2023.

Head over to our Kodiak Ultra Marathons by UTMB website for all race information moving forward. 


2017 Kodiak Video Trailer
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The Annual Kodiak Ultra Marathons are situated in the San Bernardino Mountains of Southern California at an elevation of 7,000'. The cozy, cool, alpine village of Big Bear Lake is ready to host you and your crew!
This course is the much anticipated complete loop around Big Bear Lake with the most epic views and climate you could ask for. In 2020 we will again be running the clockwise direction of travel around the lake! With nearly 17,000′ of vertical climbing and sustained running over 7,000′ in elevation, be prepared to be challenged. The Kodiak is a true mountain one hundred. Technical. Steep climbs to 10,000′ summits and cool nights. Gorgeous views. Thin air. Flowing single track. Epic canyon passages. Welcome to the mountains! 

Our volunteers and crew will see to it that you have every opportunity to succeed. We pride ourselves on the design of this route, the aid stations, and a COOL little town that will host you. Bring friends, family, kids, ….it will be classic summer season in the Bear.

Proceeds from the Kodiak benefit the San Bernardino Search & Rescue, Big Bear Valley Trails Foundation, Mountain Top Radio Association, and the Big Bear Middle School Interact Club.
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