The Walk-a-thon / Poker Runs
Closely related to a marathon approach is the walk-a-thon idea. You have heard of these affairs before. Briefly, each participant in the walk-a-thon gets people to pledge to give him so many dollars or cents per mile. After the walk-a-thon, the walker collects the money from his sponsors.
Motercyle organizations use what is called a Poker Run. It is similar to a road rally in that you have certain time limits to get to certain spots for further directions ETC.