Summer Trail Fest Ultra
50 Mile, 50K, Half Marathon, & 5 Mile
Saturday, June 12th, 2027 at Sleepy Hollow
Register NowSTFU & Run at Sleepy Hollow State Park!
Summer Trail Fest Ultra (STFU) – 50 Mile, 50K, Half Marathon, & 5 Mile
Yes, we know what it stands for. STFU is the perfect summer trail race, whether you’re chasing your first finish or a new PR. The course at Sleepy Hollow State Park is 90% scenic, runnable trail with generous cutoff times. You’ll find well-stocked aid stations, clear course markings, and a supportive trail community. The 50K, Half, & 5 Mile also feature Ruck Divisions!
After your race, head to the beach and refuel—Trivium will be on the grill serving burgers, hot dogs, and sides for all participants, and spectators can join the celebration with a picnic ticket! And if you’ve run Winter Trail Fest, don’t forget—your STFU and WTF medals magnetically connect. Need a little push? Quit the excuses and STFU & Run!
Choose Your Race Day
50 Mile
Take the next step in your ultra journey with our beginner-friendly 50 Mile. Three mostly flat loops and frequent aid stations make it an ideal first 50 Miler—and a great day for experienced ultrarunners, too.
50K Run & Ruck
Whether it's your first 50K or your tenth, you'll enjoy two mostly flat loops and a well-marked course designed for a great day on the trails.
Half Marathon Run & Ruck
One loop of flowing singletrack and gentle hills make this the perfect summer trail half marathon.
5 Mile Run & Ruck
Whether you're chasing a fast time or trying trail running for the first time, you'll love this fun, singletrack course with gentle terrain.
View Registration Options & Pricing
Why Runners STFU & Run
"This was my first trail race and ultra and it was such a wonderful intro. The trails were amazing, the aid stations were exactly what I needed, communication was great, and we loved camping at Sleepy Hollow for the weekend." - 2024 Participant
"I love the volunteers, how happy and encouraging they are. The staff are amazing, helpful, and always enthused to be out there." - 2025
"Accessibility of the course to be able to see my family. The course itself with all that shade! And the helpful and encouraging aid station volunteers." - 2025
"The volunteers and staff at the aid stations were incredible. The course was very well marked and made it easy to 'check out' but still have confidence I was moving in the right direction." — 2026
What's Included in Your Race Day
- STFU finisher's medal
- STFU singlet
- "STFU and Run" sticker
- Chip timing and live results from Trivium Racing
- Well stocked aid stations with Hüma gels, Tailwind Hydration, water, and real food
- Post race cook out with food and drinks
- Race photography
- A chance at awesome age group and overall awards
- And more!
What's Included w/ Registration?
Participant Singlet
2027 design coming soon.
Plan Your Race
Check out the Athlete Guide for details about the race day schedule, parking, course markings, aid stations, drop bags, cut-off times, and more!
Athlete Guide Race Schedule Aid Station Chart
Trail Series
Winter Trail Fest Half Marathon & 5 Mile East or West
+
Summer Trail Fest Ultra
If you join us in February at Island Lake (East) or Yankee Springs (West) for Winter Trail Fest (WTF), your WTF & STFU finisher medals connect magnetically! Plus, if you register for the series you save 15%! More details below.
WTF East WTF West
2027 designs coming soon.
