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Antelope Island Buffalo Run

March 23 - March 24

Here’s the information for the 2023 Antelope Island Buffalo Run.

Big News for 2023

  1. First, starting in 2023 the 25K will be recombined with the other three distances. No more separate dates. See below for the start times and dates.
  2. Second, there is a new start/finish area. The new area will be the field next to the marina. The old start/finish is slated to become another campground. There will be plenty of parking and camping available in the new area.
  3. Third, the entry limit has been increased to 600 runners.

Dates and Times

Why a Thursday/Friday race?  Starting in 2022, the park is not allowing any special events to happen on the weekend or holidays. This is due to the huge increase in visitors over the past couple of years and the lack of adequate infrastructure (roads, parking etc.) to handle both an influx of the regular visitors to the island, plus the addition of several hundred cars for the race.  The issue isn’t with the trails, it’s with the roads and other park infrastructure.  When I first starting volunteering and race directing out there back in 2006, annual visitors numbered around 250,000. In 2021 the annual number of visitors to the park was well over 1,000,000. I’m having to use up a couple of extra vacation days from my day job as a result of this change, but it is what it is and we’ll all adapt. I hope you understand.

Antelope Island Buffalo Run 25K:

  • Friday March 24th, 2023
  • 9:00am


  • Friday March 24th, 2023
  • 8:00am

50 Mile

  • Friday March 24th, 2023
  • 6:00am

100 Mile and early start 50 Mile

  • Thursday March 23rd, 2023
  • 10:00am
  • 10:00am – Yes, we are having all 100 mile runners start at 10:00am. There WILL NOT be an early start option for the 100 mile. You’ll now have 32.5 hours to complete the race.


March 23
March 24


Buffalo Run Adventures
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Antelope Island
4528 W 1700 S
Syracuse, UT 84075 United States
+ Google Map
(801) 773-2941