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Kodiak Ultra Marathons

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Race through the heart of the San Bernardino Mountain's, in a 50k, 50 mile, or 100 mile ultramarathon. Great for experienced runners seeking a new challenge, the course loops right around the stunning Big Bear Lake, with a total ascent of almost 17,000ft. Sign up for the ultimate endurance test.

How to enter the Kodiak Ultra Marathons

  1. Icon

    Kodiak 100

    Run 100mi
    Entry Closed
  2. Icon

    50 Mile

    Run 50mi
    Entry Closed
  3. Icon


    Run 50km
    Entry Closed

Kodiak Ultra Marathons routes


100 Mile:

The Kodiak 100 Ultra Marathon has an epic start and finish from the Village of Big Bear Lake. Runners will circumnavigate the entire Big Bear Valley and make the monumental ascent to the summit of Sugarloaf Mountain (9,963ft) as well as a trip through the rarely visited, yet stunning, Siberia Creek Canyon. This course provides a true mountain 100 miler, with technical footing and a lot of running above 7,000ft.

50 Mile:

This challenging yet picturesque course offers more than just a taste of the Kodiak 100 and the 50 mile route will join the 100 mile course near the midway point before then following the same track to the finish. 50 milers will kick-off from a runnable section on Big Bear's north shore and behold epic views of both the desert and the alpine forest in the distance.

The real test will come in the latter stages of the race when runners climb Sugarloaf Peak (9,963ft), before making a descent of Radford Rd. Here, you can enjoy spectacular stunning views over the valley floor with San Gorgonio in the distance, before then climbing up Seven Oaks. Enjoy the cruise down Knickerbocker to finish downtown in the village.

Back 50K:

The final 31 miles of the 100 mile course kicks-off from the base of Sugarloaf Mountain. Here, you will climb almost 10,000ft to the top of Sugarloaf Peak before starting the downhill to Radford Rd. As in the 50 miler, runners can enjoy the breathtaking views over the valley floor with San Gorgonio looming in the distance. One last climb climb up Seven Oaks, before being able to enjoy the cruise down to Knickerbocker and the photo finish in the villages downtown.

Event Details

What’s Included
  • Finisher's t-shirt
  • Finisher's medal
  • Beer garden
  • Food and sponsor booths
  • Awards for the Top 3
  • Aid stations
  • Official event photography
Raceday Logistics


Thursday, August 13th (Timings TBC):

Expo & Packet Pickup (all races)

Pre-race briefing & sponsor giveaways (100 mile)

Friday, August 14th:

0600AM: 100 Mile Race Starts

Expo & Packet Pickup (50M & 50K) - Timings TBC

Saturday, August 15th:

50 Milers

Back 50K

1100AM - 8PM:
Finish line festival & beer garden


Spectators are more than welcome to come along to the Finish Line Festival/Beer Garden and create an epic post-race atmosphere.


The Kodiak Ultra Marathon would not take place without the help of many hard-working and selfless volunteers.

In return for your help, all volunteers will receive:

- Free custom Kodiak t-shirt
- BBQ appreciation celebration
- Satisfaction of helping runners achieve their goal

If you'd like to sign up, then head over to the volunteers page here:


Frequently Asked Questions

How many aid stations are there during each Kodiak Ultra Marathon?
The Kodiak 100 mile has 13 aid stations during the race itself, the 50 mile has 7 and the 50k has 4. In addition, there will be on course aid at Siberia Canyon and Radford Road.
What do Kodiak Ultra Marathon finisher's receive?
All 100 mile finisher's will be given a Kodiak belt buckle and all 50 mile/50k finisher's will receive a bespoke medal. Additionally, the first 3 Male & Female competitors will be given custom carved awards.
Where do the proceeds from the Kodiak Ultra Marathons go to?
These funds go toward helping a number of charities: San Bernardino Search & Rescue, Big Bear Valley Trails Foundation, Mountain Top Radio Association, and the Big Bear Middle School Interact Club.

Kodiak Ultra Marathons weather forecast

Clear throughout the day.

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