This is a very cool idea, though I was thinking more in terms of an aggregate rather than individual journeys. That way we could all travel somewhere REALLY far, and it also wouldn't put any extra burden on people to do the map work.

That makes perfect sense - also, if we pick something that has published mile markers/distances, such as the Camino Santiago or any major biking route (or for that matter, any river), the map work is negligible as we could literally just find our mileage on the map.

Yay communal runtravelling!