ONU Polar Bear Indoor Marathon and Half Marathon

7:30 AM – Sunday, January 31, 2027

ONU Sports Center at Ohio Northern University

Ada, Ohio 45810

Registration:

The participants in the event will be decided on a first-come-first-serve basis using the online link (https://www.onusports.com/sports/mtrack/marathon/index). The deadline for registration is December 31, 2026 or until the race is filled (it is expected to fill much sooner). We will notify you by email if you are accepted into the race when we receive your registration and payment. If we receive your response after the field of 40 runners is reached, we will promptly return your registration fee.  Updated registration lists will be periodically posted on the race website.