Antelope Causeway Half Marathon
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Event overview
The Antelope Causeway Half Marathon, 10K, 5K & Duathlon takes place on Friday, March 27, 2026, in Syracuse, Utah. The event is organized by On Hill Events and combines multisport and run-only options. The multisport format follows a run-bike-run structure, with the bike leg held on paved roads and no swim portion. The run-only options use the Antelope Island Causeway.
Events and distances
- Causeway Half Marathon - Run Only
- Causeway 10K - Run Only
- Causeway 5K - Run Only
- Duathlon: Sprint - Short Distance
- Duathlon: Olympic - Intermediate Distance
- Sprint Relay (2 to 3 people)
- Olympic Relay (2 to 3 people)
- Bike Only 22 Miles
- Bike Only 11 Miles
- Virtual Race
- Half Marathon - Pacer Invitation Only
Entry fees listed on the event page show a price range for the duathlon ($52.50 - $94.50), run distances ($35 - $1,000), and bike distances ($36.75).
Location and other details
The venue is Antelope Island State Park - Marina, 4528 West 1700 South, Syracuse, UT 84075. Sponsors named for the event include Powerade, Fatboy Ice Cream, and My-Health-Insight. The event page notes the course uses the Antelope Island Causeway for running and paved island roads for cycling. Visit the organization's website for the most recent information.
