My 10-year-old son and I rode the Hiawatha rail-trail recently. It was about 16.5 miles total riding, which was the longest either of us have ridden in a day. Not bad for me on my 29er, but my son was my hero doing it on a 24.
The trail is at the Montana-Idaho border between Coueur d’Alene and Missoula. Lots of great views and fun riding with multiple tunnels and trestles. More route info at: http://www.skilookout.com/hiawatha/
Nothing techical, but decent lights are necessary to avoid ruts in the tunnels. This would be a great Coker ride, and I definitely intend to go back and do the ride round trip (rather than use the shuttle) on my Big One.
Thanks! Yeah, it’s a ton of fun riding with him. He actually does some single track with me, too.
I’m also working on getting my 12 and 9-year-olds riding.