We're organizing a 300 km round trip trail ride for next spring/summer. ( I missed last years) 150 one way with a motel stay overnight then back the next day. The route taken last year had a 2-3km run on the shoulder of the road. This year we are going to try to re-route to elimenate this and have it all trails, back roads, and railroad bed.
I'll post more as it gets closer and the dates get finalized