12 Hour Swim challenge
What is the 12 Hour Swim Challenge?
12 hours to complete a swim goal of your choice.
Yep, that's right! 12 hours! Each year the Cedar River Complex Aquatics Center hosts this event in December.
You don't have to swim - walking in the lazy river or zero depth pool is absolutely fine too!
Once you are registered you can swim as much or as little as you like. Food, drinks, and prizes will be available during the 12 Hour Swim Challenge. Meet old friends and new ones!
2026 DETAILS
Saturday, December 12th 2026 @ 8 am-8 pm
Details
The 12 Hour Swim Challenge is on -
Saturday, December 12th (2026) from 8 am to 8 pm!
FAQ: Do I have to stay at or in the pool the entire time?
Nope! Participants are welcome to come and go as they please. The goal is to finish your particular challenge before the 12 hours are up.
FAQ: Are there local accommodations in Osage to stay
at if I'm from out of town?
Yes! AmericInn is within a mile distance of the CRC.
Proceeds help fund ongoing 3rd Grade Swim Safety Programs at the Cedar River Complex.
Each year, 3rd grade classes from Riceville Community Schools, St. Ansgar Schools, and Osage Community Schools visit the CRC Aquatics Center and learn about pool rules, water safety, and aquatic based lifesaving skills.
Participation Cost & Finisher Goals:
Swim or walk your way to a one-of-a-kind finish! Pick the goal you would be most interested in completing with the relay event. Registration includes food and drinks, participation fee, and finisher awards.
EVENTS
Challenges - $25.00
All challenges are swimming or walking either in the lazy river or beach area. You can choose!
Shirts available for sale for the event - $10 for participants, $15 for anyone who just wants a shirt to support!
- Open Swim - no goal, just participating for fun, food, and games! - $15.00
- The First Mile - 35 laps of the pool
- The Century - 100 lengths, 1.4 miles or 2500 yards
- All Day 5k - 3.1 miles, 110 laps, or 5,500 yards
- Swim Over the Horizon - 4 miles, 141 laps or 7050 yards
- Mt. Everest Challenge - 5.6 miles, 200 laps or 10,000 yards
- Ultra Swim 10K - 6.2 miles, 219 laps or 10,950 yards
- The Natator - 8 miles, 282 laps or 14,100 yards
- The Hero - 10 miles, 352 laps or 17,600 yards
- Half Marathon - 13.1 miles, 480 laps or 24,000 yards
- English Channel - 21 miles, 739 laps or 36,950 yards
How do I sign up?
Sign up for the 12 Hour Swim Challenge by visiting the Cedar River Complex Wellness Center or give us a call to register (payment due at time of registration).
Email Mark Miller, CRC Aquatics Manager, (markm@cedarrivercomplex.com) with any questions or comments you may have.
