My best friend is planning to do this three-day walk next fall and wants me to either walk with her (20 miles a day, three days in a row) or else crew. I'm not sure I'll have the time to train for that and also train for a century or two next summer, so I'm thinking about crewing instead. I've heard they have a "transportation" team for the crew, and one of the jobs is to ride around on your bike making sure the walkers make the proper turns, etc. on the route. I thought this might be a good way to keep my bike training up but also be there for my friend.

Has anyone ever done the Three Day Walk, either walking or crewing? Do you know anything about crewing on a bike?