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  • Distance: 1.1 km from Durango
    Sat, Aug 29, 2026 at 8:00 AM

    The Thirsty 13 Half Marathon is one of the best races in Colorado!

    The race course: Fast and mostly downhill, with gorgeous scenery. Perfect for runners new to the half marathon distance or looking to set a PR.

    The finish line: Ska Brewing, one of the best breweries in Colorado. A crowd of spectators cheers you to the finish.

    Your (optional) post-race celebration: The San Juan Brewfest, with over 30 breweries waiting to congratulate you on your run! You can choose to add a ticket when you register.

    See full details
    13.1 MilesHalf MarathonRun via RunSignup
  • Distance: 3.4 km from Durango
    Sat, Sep 12, 2026 at 8:00 AM

    SIGN UP EARLY to Unlock New Lower Prices!

    We are excited to announce that we have reduced our entry fees for Durango Derby by over 30% for all categories and we have made all entries for participants 18 and under completely FREE!

    The catch is entry fee pricing will go up by $25 on March 15th at 9:00am and then another $25 price increase on July 31st at 9:00am, so sign up early and save big time on your registration.

    Register before July 31st at 9am to get your FREE Durango Derby Tee shirt included with your race entry! Unfortunately, we are unable to offer free tee shirts to the free 18 and under categories unless someone would like to sponsor it, then please reach out.

    Full Derby 4-Stage SOLO Categories

    Take on the Durango Derby full-course challenge and complete all four timed stages in a single day stage race format with untimed transfers in-between stages. Riders in the full course category will complete Stage 1, Stage 2, Stage 3, and Stage 4, starting and finishing from the Durango Mesa Park.

    NEW! 3-Stage SOLO Categories

    Want to ride or race in the Derby, but not feeling the queen stage on Animas Mountain? The three stage categories will challenge racers to complete three of the four timed stages in a single day stage race format with untimed transfers in-between stages. Riders in the 3-stage category will complete Stage 1, Stage 2, and Stage 4, starting and finishing from the Durango Mesa Park.

    NEW! 2-Stage SOLO Categories

    Did you ride or race in the team categories in previous versions of the Derby? Our new two stage categories will challenge racers to complete two of the four timed stages in a single day stage race format with untimed transfers in-between stages. Riders in the 2-stage category will complete Stage 1 and Stage 4, starting and finishing from the Durango Mesa Park.

    EVENT UPDATES FOR 2026

    • NEW 3-stage and 2-stage SOLO categories

    • Everyone under 18 races FREE!

    • Newly updated courses incorporating many new miles of Durango singletrack

    • Separated start waves based on rider feedback

    • Limited on site camping will be available - check back with us for updates.

    • Improved rider medical support

    • Expanded category options

    REFUND, DEFERRAL, AND TRANSFER POLICY

    TRANSFERS

    Entries can be transferred to another rider as long as the category is still open for registration and not sold out.

    Transfers can be made directly through the BikeReg platform.

    All transfers will incur a $10 transfer fee.

    REFUNDS AND DEFERRALS

    There are no refunds issued by Durango Derby under ANY circumstances. Deferrals are permitted under the following guidelines:

    • Up to 30 days out from the start of the event, 80% of your race fee will be deferred.

    • From 30 - 10 days out from the start of the event, 60% of your race fee will be deferred.

    • NO deferrals will be issued within 10 days of the start of the event.

    See full details
    CyclingMountain Biking via BikeReg
  • Distance: 3.9 km from Durango
    Sat, Sep 12, 2026 at 8:30 AM

    Come race with us at beautiful Lake Nighthorse in Durango, Colorado. The Swim takes place in this gorgeous lake. The Bike course includes some challenging climbs, while the Run course is rolling on mostly natural dirt/gravel surface with spectacular views of the lake. The Olympic course is two laps of the Sprint course for all disciplines.

    16 Miles51.5kGravelOlympicRunSprintSwimTriathlon via RunSignup
  • 111 South Camino Del Rio, Durango, Colorado, 81301, United States
    OpenStreetMap Google Maps
    Distance: 2.9 km from Durango
    Sun, Oct 11, 2026 at 8:00 AM

    The inaugural Durango Marathon & Half Marathon debuts on October 11, 2026, and you are invited to experience one of Colorado’s most beautiful mountain towns at the height of fall. Set against crisp high-country air and peak autumn foliage, this road race showcases scenic paved routes winding through and around Durango, with a start and finish near historic downtown and the iconic Durango & Silverton Narrow Gauge Railroad Station. Whether you’re tackling the full 26.2 or the half marathon, you’ll be treated to expansive views, quiet roads, and a course designed for rhythm, scenery, and celebration.

    Built as a true destination race, the Durango Marathon combines professional race operations with small-town hospitality. Expect fully supported aid stations, accurate timing, high-quality finisher medals and shirts, and a welcoming finish-line atmosphere with music, awards, and local flavor. Most of the course runs on wide road shoulders with minimal closures, keeping the experience safe, smooth, and community-friendly while highlighting the landscapes that make Durango special.

    More than a race, the Durango Marathon is a weekend experience. October is one of the best times to explore the region—perfect for extending your stay with family or friends to enjoy fall hiking, local breweries, vibrant restaurants, and downtown shopping. We can’t wait to welcome you to Durango for a new tradition rooted in endurance, community, and the unforgettable beauty of fall in the San Juan Mountains.

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    13.1 Miles26.2 MilesMarathonRun via RunSignup
  • Distance: 1.2 km from Durango
    at 11:00 PM

    World's Best Running Series!

    No Time Limits

    Great Food

    Award-Winning Medals

    Loony Running Family!

    We RUN this country, TOGETHER!

    Event details and schedule

    Thanks for running with Mainly Marathons! Take a look at our website for additional details about this series and our other series of races.

    Also, join our Facebook group to stay up-to-date with our loony adventures: Main Group and Southwest Series.

    If you're interested in some Mainly Merch, check out our online store HERE. We'll offer some items (hats, stickers, magnets, mugs, etc.) in-person at the races, the Mainly Merch store best option for a variety of fun designs and quality merchandise to showcase your loonacy!

    If you have any questions, email [email protected]

    We RUN this country, TOGETHER!

    See full details
    Run via Active.com
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