I also keep a directory updated with direct links to GPX files.

Michigan

Eastern Upper Penninsula: GPX

Canada

Lake Superior Circle Tour: GPX

Illinois, Wisconsin, Michigan, Indiana

Lake Michigan Circle Tour: GPX

Illinois

Northeast Illinois Gravel Ride: GPX

North Illinois DS Track: GPX

WI Rustic Roads Patch

Kentucky

Kentucky Adventure Tour Official, ADVRider: ADV Bike GPX, 4x4 GPX

Missouri

Trans Missouri Trail ADVRider: BASH3RS TMOT V2, BigDogs TMOT West, Sieg's Trans Missouri River Ride

Wisconsin

Trans Wisconsin Adventure Trail: Dual Sport GPX Overland GPX

Rustic Roads

NE IL and SE WI Rustic Roads Patch: GPX

Milwauke Area Rustic Roads Patch: GPX

Madison Area Rustic Road Patch: GPX

NE IA, SE MN, and SW WI Rustic Roads Patch: GPX

Minneapolis and West Central WI Rustic Roads Patch: GPX

Fox Valley and Central WI Rustic Roads Patch: GPX

Milwaukee to Pecatonica Rustic Roads Patch: GPX

North Central WI Rustic Roads Patch: GPX