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  • Distance: 40 km
    Sat, Jul 11, 2026 at 8:00 AM

    The Grin & Bear It is Crested Butte’s oldest trail challenge. Historically presented as a sprint to Green Lake and back, this classic event has evolved to offer a 25k Loop competition while still maintaining the traditional 15k race.

    New in 2025, the Grin and Bear it BIKE! This route will follow the 25k run route, excluding the .7 miles to Green Lake and back. This challenging route is roughly 14.83 miles with just under 4k feet of climbing.

    Note- there is minimal swag and no podium awards for this event.

    See full details
    9.32 Miles14.83 Miles15.53 MilesRunTrail via RunSignup
  • Distance: 33.9 km
    Fri, Jul 17, 2026 at 6:00 AM

    The High Lonesome 100 is a high flying endurance race in the Sawatch range of the Colorado Rocky Mountains. With 23,500' of vertical gain and reaching an elevation of 13,100', it's a hell of a course. The race runs in a loop through some of the most beautiful single track in the state, and takes runners on the Continental Divide and Colorado Trail, through 2 ghost towns, over 5 alpine passes, through remote basins, and over soaring ridges. It's also run and staffed by experienced and quality individuals, so you'll get to be a part of a wonderful community. If you're looking for a true mountain race, created in the spirit of the classic 100 milers, then look no further.

    Stats

    • Entry fee: $465

    • Start/Finish Location: County Road 321, Mount Princeton, Colorado (coordinates: 38.740282, -106.161237)

    • Distance: 101 miles

    • Average Elevation: 10,600'

    • High Point: 13,100'

    • Low Point: 8,150'

    • Total Elevation Gain: 23,500'

    • Cut off: 37 hours

    • Course type: 66% single track, 21% mining roads, 10% gravel roads, and 3% paved roads

    See full details
    100 MilesGravelRunTrail via RunSignup
  • 24 Mc Phelemy Park U S., Buena Vista, Colorado, 81211, United States
    OpenStreetMap Google Maps
    Distance: 35.7 km
    Sat, Sep 19, 2026 at 9:00 AM

    View all the details on our website - One Love Endurance! Link is below!

    1k3.1 Miles6.2 Miles13.1 MilesRun via RunSignup
  • Distance: 35.6 km
    Sat, Sep 26, 2026 at 7:00 AM

    With glorious views of the Collegiate Peaks and 4,000ft of ascent along the way, these 18 or 30 miles of buttery single track and forest roads are perfect for everyone from the first time trail runner to the veteran ultra runner. Although the Arkansas Valley is famously known for its high alpine peaks, it’s a well kept secret that there’s a stash of arid, desert style trails just outside of Buena Vista (BEW-na Vista), CO - giving the West Line a feel like no other.

    The West Line Winder is put on by Freestone Endurance (the same folks that bring you the High Lonesome 100) and is a perfect fall race for any runner!

    West Line Winder is hosted by the 14er Fest which takes place Sept 27 - 29th in Buena Vista, CO. At the heart of the festival, you'll find that 14er Fest seeks to join together a wide variety of trail users, including both motorized and non-motorized trail enthusiasts. It's visions is to create a platform where all trial groups can recreate and work together to keep trails open and maintained. Join us for trail events, clinics, festival camping, live music, local libations and amazing vendors.

    As an added challenge, runners can attempt the Sawatch 50/50 by registering for the Sawatch Ascent 50k on the same weekend! Finishers of the Sawatch 50/50 will get a special award and place awards for the top 3 overall men and women. Runners can camp at the Sawatch Ascent start/finish line (Nathrop, CO) for $15/night. Space is limited to 35 spots and can be purchased at the Sawatch Ascent webstore.

    Cancellation, Deferral, and refund Policy: Runners can defer 50% of their entry to the following year so long as they request it by September 1st. There is no refund in the event of a cancellation.

    See full details
    50kRunTrailUltra via RunSignup
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