Annual STFU at Sleepy Hollow State Park!

Taking place in the middle of Michigan, Summer Trail Fest Ultra and Half Marathon (STFU) is convenient for those on the east and west side of the state. With well-groomed trails and extremely generous cutoff times (20 min/mile for the Ultra and 45 min/mile for the Half), this is a spectacular race for beginners, season veterans, or athletes looking for a personal best. When you cross the finish line, celebrate at the beach with our post-race STFU barbecue party while cheering for participants on the course!

Races offered by this event

You have 31 weeks to prepare

50K

14 Jun, 2025 (Sat) - 07:30

Trail running

31 mi

Solo

On site

Trail

Half Marathon

14 Jun, 2025 (Sat) - 07:30

Trail running

13.1 mi

Solo

On site

Trail

5 Mile

14 Jun, 2025 (Sat) - 08:00

Trail running

5 mi

Solo

On site

Trail

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Official links

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2024 Summer Trailfest Ultra and Half Marathon Results (50 KM)

15 Jun, 2024 (Sat)

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Summer Trail Fest Ultra and Half Marathon

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