From the Promoter:
The Goose returns! Bertram Chain of Lakes meets for 50, 70 or 100 mile gritty100-mile. Start time is 7 am. This is a non-supported 85% gravel ride through Wright County. Trailhead Cycling will have a tent, food, water and neutral support at the start/stop.
Entrance fee is $10; which is donated to MORC for Bertram SingleTrack Trail Maintenance.