Routes are marked with orange-yellow arrows such as the following.  
 

Every turn has two or more arrows leading up to the turn, plus one or more "confirmation" arrows after.  The double arrows are for emphasis.

FINAL RideWithGPS route links for all 7 routes are available here. 

Downloadable route maps (preliminary):

Maps 1-2:  Marysville to Milford Center (18-62 mile routes)

Maps 3-4:  Milford Center to Mechanicsburg and beyond (75-100 mile routes)

Map 5: 8 mile route

It is STRONGLY encouraged that you print and carry maps or use a GPS unit to supplement the painted route markings which are always susceptible to erasure during road work.