| Date: | Saturday, September 20, 2025 |
| Time: | 8 a.m. - 2 p.m. |
| Location: | Millennium Park Peterborough (130 King St., Peterborough) |
| Cost: | Free to attend the festival. Race fees are $72.83 for 10K race until July 31 ($83.17 after), $23.83 for 1K kids fun run (only 50 spots available) |
Featuring a 10km chip-timed race along the Trans Canada Trail and Rotary Trail in East City Peterborough raising funds for Camp Kawartha. Children under the age of 14 can sign up to participate in the 1km kids fun run, with each runner receiving a participant medal and snack at the finish line. Monarch-themed costumes are encouraged. The race and run will be followed by the family-friendly Monarch Festival with live music, local crafts, face painting, informative booths to educate and inspire attendees about the importance of preserving the monarch butterfly, guest speakers, food, and more.
For more information and to register for the race, visit https://raceroster.com/events/2025/102397/monarch-ultra-10km.
