Last Updated February 24, 2025 -- With start-finish at the Stratton Mountain Resort, the VT Monster Gravel Grinder 2025 offers three-course options spanning 100 miles, 78, and 48 miles.  Details behind the new 100-mile course are forthcoming. However, the 78-mile course comes with 70% gravel and several Class IV sections, including the Devil's Staircase.  The total…