Antelope Island Buffalo Run
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Antelope Island Buffalo Run - Spring Classic
The Buffalo Run is a multi-distance trail running event held each spring on Antelope Island. The course passes along singletrack through desert grasslands with views of the Great Salt Lake and sections where wild bison roam the course. The event began in 2006 with about 150 entrants in the 25K and 50K and later expanded to include a 50-mile option.
Distance options and approximate elevation gain:
- 50 Miles (50M): about 3,428 feet of gain
- 50K / 31 Miles: about 3,855 feet of gain
- 25K / 16.48 Miles: about 1,687 feet of gain
Registration fees vary by distance and date. Examples of published pricing tiers:
- 50 Mile: $180 until Oct 25, 2026; $210 until Dec 16, 2026; $240 until Mar 6, 2027
- 50K: $130 until Oct 25, 2026; $150 until Dec 16, 2026; $175 until Mar 6, 2027
- 25K: $90 until Oct 25, 2026; $120 until Dec 16, 2026; $130 until Mar 6, 2027
Pentalon Construction sponsors a course-record prize purse that awards amounts for breaking records at each distance: $500 for the 50M and 50K divisions, and $250 for the 25K divisions. Visit the organization's website for the most recent information.
