Texas · 155 Miles · 200 Miles · 400 Miles
Rio Colorado Ultra Slam
Rio Colorado Ultra Slam is a 155 Miles, 200 Miles and 400 Miles event held in Spicewood, Texas. Its next confirmed date is Friday, January 1, 2027.
- Race day
- January 1, 2027
- Location
- Spicewood, TX
Race details
- Date
- Friday, January 1, 2027
- Location
- Spicewood, Texas
- Distances
- 155 Miles, 200 Miles, 400 Miles
- Registration
- runsignup.com
- Official website
- fitfoundation.org
Registration, course & weather
- Registration status
- Open
About the Rio Colorado Ultra Slam
Rio Colorado Ultra Slam™ Multiple races. One river. One of the toughest endurance challenges in Texas. The Rio Colorado Ultra Slam™ is a journey that tracks the spectacular geographical transformation of Texas. Runners trace the lifeblood of the Lone Star State, moving from the rugged granite cliffs of the Hill Country, winding through the sandy loam of the Lost Pines savannah, and culminating in a brutal, beautiful endurance showdown on the edge of the Gulf of Mexico. From Tow, near the Canyon…
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Rio Colorado Ultra Slam: common questions
- When is the Rio Colorado Ultra Slam?
- The next confirmed date is Friday, January 1, 2027.
- Where is the Rio Colorado Ultra Slam held?
- In Spicewood, Texas.
- What distances does the Rio Colorado Ultra Slam offer?
- 155 Miles, 200 Miles and 400 Miles.
- How do I register for the Rio Colorado Ultra Slam?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Rio Colorado Ultra Slam?
- Yes — registration is open. Listed fee for the longest distance, $545 (from fleetfeet.com, checked October 17, 2026).
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.