Doomsday 5K

That's a W.R.A.P on the 4nd Annual Doomsday 5K Trail Race !

👉 Race Results: https://ultrasignup.com/results_event.aspx?did=129265
👉 Photos: https://photos.app.goo.gl/TiS7cTZxf3wdRNVJA

📸Elaine Collins

Thank you for joining us and kicking off your New Year’s Day with Terrain Trail Runners-STL. We love starting the year on the trails with you.

💥Save the Date:
Doomsday 5K returns Friday, January 1, 2027.

👉Registration opens early September 2026.

Have an amazing 2026 racing season!

Terrain Trail Runners STL - Doomsday 5K at Cliff Cave Park · Dec 31, 2025 – Jan 3, 2026 📸 Shared album · Tap to view!

✨Some highlights from the 4th Annual Doomsday 5K!

No better way to kick off the New Year than lacing up, showing up, and running into 2026 with this amazing community.

🏃‍♀️🏃‍♂️ Thanks to everyone who kicked off 2026 with Doomsday 5K in full sprint 💥 🙌
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🏃‍♀️🏃‍♂️

Psst... 👀

Did you know we're just 4-ish months away from a brand new?

👉 You know what that means - time to set fresh goals and kick off 2026 with a bang 💥

🎉 Doomsday 5K is BACK!

Online registration for the 2026 edition opens September 1, 2025.

✅️ Race will be capped at 75 runners
✅️ NO price increases
✅️ Race Day Registration will be available
✅️ First come, first served

Start your year strong. Start it with Doomsday. 🏃‍♀️🏃‍♂️ 🙌
🏃‍♀️🏃‍♂️ #2026