Matt Mason "Cowboy UP" Triathlon

JUL
26
2026
Honor and support families while celebrating Matt Mason at the Cowboy UP Triathlon/Duathlon on July 26, 2026 at Smithville Lake. Choose tri, du, relay or virtual options and tackle scenic swim, bike and run courses for all levels.
Sun 26 Jul 2026
Long Course (individual)... Long Course Relay (triath... Short Course (individual)... Short Course Duathlon Short Course Duathlon Rel...

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2026 Matt Mason "Cowboy UP" Triathlon/Duathlon

The event takes place on Sunday, July 26, 2026, at Smithville Lake Crow's Creek Park, Shelter 5, Smithville, MO 64089. It was established to honor and support the families of those who made the ultimate sacrifice and to remember Matt Mason. The event program includes individual and relay triathlon options, a duathlon, and a virtual runner option.

Courses and race details

  • Short Course Duathlon: 1.5 mile run, 11 mile bike (2 laps), 5K run.
  • Short Course Triathlon: 500 m swim, 11 mile bike (2 laps), 5K run.
  • Long Course Triathlon: 1,000 m swim, 18.8 mile bike (4 laps), 10K run.

The swim is a clockwise time trial start with athletes entering the water approximately every three seconds. The duathlon uses a shotgun start on the run path to the right of the beach. Exiting transition includes an incline; it is about 1.6 miles to reach Highway E from transition. Short course bike competitors complete two loops and long course competitors complete four loops; a timing box is on the bike course and a bike course map is included in race packets. Short course athletes pass two water stations on the run course and long course athletes pass five. Age-group and overall awards for Men and Women are given for both short and long course triathlon and duathlon. Visit the organization's website for the most recent information.

Long Course (individual) Triathlon
Long Course Relay (triathlon) 2-3 Participants
Short Course (individual) Triathlon
Short Course Duathlon
Short Course Duathlon Relay
Short Course Relay (triathlon) 2-3 Participants
Virtual Runner