RV - how difficult is it?
For the benefit of those considering RV, I've done some work to create a route that illustrates what you can expect. This is not a track, but an approximate route created in Mapsource using a Topo Map. It's based on riding the trails lots. I am sure the route is not an exact match for the trails, but it's pretty close and serves the purpose to get an idea of the distances and ride profile.
My route is @ 17.5 miles. I was out for 2.5 hours on Saturday to complete the route. I wish I could say it took me that long to "ride" the route, but I am on foot for the toughest climbs. The climb @ the 5 mile mark, 8 mile mark and 11 mile mark are hike-a-bike for me.
All depends on your outllok and what you want from the route. For me it's great fun and a great workout. When I am pushing the bike up those climbs or fighting to climb on the bike I know I've got some of those fun descents to look forward to, and the great views of the lake.
Here's the route and the route profile;