The Wise Raven Trail Race is an annual trail running event held in Waterloo, Ontario, supporting the Grand River Region Cancer Centre (GRRCC). The 2025 race marks the 10th year of fundraising efforts for this important cause, and the event is sanctioned by Athletics Ontario.

Participants can enjoy a challenging course featuring a 2.5 km loop through well-marked forest trails at Camp Heidelberg, combining groomed fast sections with technical terrain like rocks, roots, and rolling hills. The event offers distances ranging from 5 km up to a 50 km ultra, including timed events and relay options. Runners should prepare for mid-October variable weather, including potential rain or snow.

- 2.5 km loop on well-marked forest trails at Camp Heidelberg
- Fast, groomed trail with some technical sections featuring rocks and roots
- Rolling hills with approximately 45 meters of elevation gain per loop
- Trail surface
- Variable October weather conditions including possible rain or snow
- Limited field size of 180 participants

- Annual fundraiser supporting Grand River Region Cancer Centre (GRRCC)
- 10th anniversary event in 2025
- Multiple race distances including 5 km, 10 km, 25 km, 50 km, timed events, and relay
- Race sanctioned by Athletics Ontario
- Limited to 180 participants
- Cup-less event; bring your own water bottles
- No dogs, pets, or alcohol allowed on property