Indoor Insanity 5k
About this race
Join us on Sunday, January 10, 2027 for a race event unlike any other in Maine. Get out of the cold and head indoors: no ice underfoot, no frigid gusts in your face, and no snow overhead! Who knew running in circles was so much fun? Music, comaraderie, and running! Walkers welcome.
Indoor Insanity 5K is a fundraiser to prevent lung cancer. Your race fees help pay for installation of radon mitigation systems in low-income Maine households.
To minimize injury and "traffic jams", runners pick their preferred heat based on their average personal running speed.
Heat # 1 - for the fastest runners (15-20 minutes 5k) Field will be limited to 30 runners. First come, first served sign ups
Heat #2 - for the intermediate runners (20-27 minute 5k) Field will be limited to 75 runners. First come, first served sign ups
Heat #3 - for runners of any level willing to take on the chaos of Indoor Insanity.
Walkers: we have two dedicated lanes for walkers. Walkers start with Heat #1 Runners
Kids Fun Run, too!
The race is professionally chip-timed for accurate individual lap and finish times.
Race fees are for race only. The deadline to purchase race shirts if you want one is December 22, 2025. We will have limited quantities available for purchase on the day of the event. First-come, first-served.
Please consider fundraising to help us mitigate more homes.
Join fellow runners on January 10, 2027 for the Indoor Insanity 5k. It's a fantastic 5K, 0.4K, Fundraiser Not Running or Walking featuring a flat and fast course in Waterville.
Pick your distance
Running
Heat 1 5k Runners 15-20 Minutes
Race Day Registration (walk-ins welcome) opens at 7:15 a.m.; Heat # 1 (<20 minute 5k runners) starts at 8:00 a.m.. (Walkers start at this time too. )
Heat #2 5K Runners 20-27 minutes
Race Day Registration (walk-ins welcome) opens at 7:15 a.m.; Heat #2 (20-27 minute 5K runners) starts at 8:40 or immediately following the Kids Fun Run.
Heat #3 5K Runners 27 minutes and above
Online registration available through 5:00 p.m. on January 9, 2026. Race-Day Registration (walk-ins welcome) opens at 7:15 a.m.; Heat #3 (for runners of all levels) starts at 9:20 or as soon as possible after the end of heat #2.
Kids Fun Run
Kids fun run is 2 laps (.25 miles). Kids' fun run participants receive free race shirt and a medal. Kids' fun run only participants are not eligible for door prizes.
Fundraiser Not Running or Walking
Not running or walking but want to support Indoor Insanity through a fundraising page to send to family, friends and colleagues
Walking
Walkers in a Separate Lane
Race Day Registration (walk-ins welcome) opens at 7:15 a.m. Walkers start with Heat #1 runners at 8:00 a.m. We have two dedicated lanes just for walkers.
Weather Overview
These values represent the 11-year monthly averages for January in Waterville.
About Waterville
Indoor Insanity 5k takes place in Waterville, Maine, United States. The local timezone is America/New_York.
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🏃 Plan Your Next Race in Waterville
Find upcoming events by distance:
- Waterville 5K Races Best Waterville routes for beginners and speed work.
- 10K Run Events in Waterville The most popular local distance in Maine.
- Waterville Half Marathons Top-rated 21.1K courses in the Waterville area.
- Marathons in Waterville Scenic 42.2K routes and Waterville Boston qualifiers.
- Waterville Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
