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Doomsday 5K

Cliff Cave County Park
806 Cliff Cave Rd,
​St. Louis, MO 63129


REGISTRATION INFORMATION 
Doomsday 5k

$50 - August 18, 2023 - November 30, 2023

$55 - December 1, 2023 - December 24, 2023

​RACE DAY REGISTRATION 
We will be accepting onsite/race day registrations for Doomsday 5K!

Race Day Registration - $55.00

*SWAG ONLY IF AVAILABLE*
Swag is not guaranteed for race day registrations

*CASH ONLY*


Race day/onsite registration will begin at 8AM on January 1, 2024!

*Included in your RACE DAY REGISTRATION
Custom Finisher Medal
Post-Race Coffee and Snack

REGISTER

COURSE DESCRIPTION
The Doomsday 5K trail race will start/finish a little way past the train tracks in Cliff Cave County Park.

Runners will start on the pavement for 1/2-ish Mile then get on the Spring Valley Trail Outer Loop for 1.8-ish Miles before heading back to the finish on pavement once again for 1/2-ish Mile to the finish. Spring Valley Trail is an all-dirt trail with rolling hills, some roots and rocks to keep you present!

*Spring Valley Trail is a beginner friendly trail*

Kick off the New Year with a 5K race on some fast and relatively 'easier' trails!

The Doomsday 5K trail race is a great introduction to trail racing for beginners as well as a challenge to test their speed for the more experienced trail runners.

Course Distance - 5K with approximately 272 feet of elevation gain.
START TIME & TIME LIMIT

The race will start at 9:00 AM. The cutoff for the race is 2 Hours, that's more than 30 minutes/miles.

You can hike that Sh$t!

Downloadable Course Map​                                                                                Course GPX file

For more information on Terrain Trail Runners -STL general race polices and withdrawal/refund policies. Please see the FAQ page. 
​
All other race specific information will be emailed after online race registration closes on UltraSignup!


General Doomsday 5K race specific information: 
​
Aid Stations
There will be NO aid stations on the course and/or at the start/finish area. Runners are responsible for their own aid, carry your own water receptacle during the race if you need water and bring your own mug for post-race coffee.

*Runners are not required to carry their own hydration bottle, pack, or cup on the course

*Keep in mind that Terrain Trail Runners events are "cupless" races.  This policy is put into effect in an effort to reduce the amount of waste and adopt a sustainable “green” practice for the race and the sport of trail/ultra-running*


Post-Race
 Join us for some hot coffee and snack at the pavilion in the park and cheer on your fellow Doomsday 5K racers.
*Post-race coffee and snacks are for RUNNERS and VOLUNTEERS Only*

Race Swag
Included in your online race registration: 


 CHOOSE FROM - Custom cotton/poly blend, lifestyle t-shirt, S/S, gender specific sizes - LIMITED SIZES AVAILABLE or Pint Glass or bypass swag and save $5 off your online race registration

All finishers will receive a custom medal

Awards for top male & female performers will be a $50 credit towards anyone of the 
Terrain Trail Runners 2024 races!

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Events

50K Mashup
Doomsday 5K
963 Beulah
Queeny Backyard
Ozark Foothills
​Babler Bongo 15K 
Dark 2 Dawn
Rockin' Rockwoods
STL Women's Trail
Thunder Chicken 100K
Wildwood Trail Marathon


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