The Leftovers Mystery Race 2025, 'Running With Scissors Edition,' takes place on December 6, 2025, at Bayfront Park in Hamilton, Ontario. This unique event features a new twist: participants are provided with blunt-tip scissors and must complete cutting tasks at checkpoints throughout the course. The event maintains its tradition of surprise distances and a fun, community-focused atmosphere, with race kits and medals composed of leftover items from previous Happy Trails Racing events. Registration is free, but participants are asked to bring a $20 bill to donate to one of several local charities.

- Course is on paved pedestrian trails at Bayfront Park, Hamilton
- Participants discover their exact race route and distance upon arrival
- Secret routes and mystery distances preserved
- Cutting tasks at checkpoints are a new feature for 2025
- Minimal extras to keep the event casual and fun

- New 'Running With Scissors' challenge: participants cut out images at checkpoints using provided scissors
- Race distances and routes remain a mystery until race day
- Race kits and medals made from leftover items from past events
- Costumes and fun running outfits encouraged with creative awards
- Emphasis on a lighthearted, community-focused event
- Limited aid stations, no chip timing
- 'Tradesies' encouraged for exchanging race swag
- Registration is free; $20 cash donation to selected charities requested