W. Woodruff ... said that He had faith in the doctrin taught by Presidet Young for the rising Generation to go on foot instead of Hors back. I said that I knew the good of it by experience. I traveled 1,200 miles on foot & averaged 40 miles a day then waided the Missisippi swamp from Little Rock Ark to Memphis Term 200 miles & ownly 16 miles out of water. One day walked 60 miles & while on the Journey walked 72 miles without Eating & when I got to Eagle Creek with Parish I believed I Could have killed any horse I ever saw walking to have followed it.
[Source: Wilford Woodruff's Journal: 1833-1898 Typescript, Volumes 1-9, Edited by Scott G. Kenney, Signature Books 1993, http://amzn.to/newmormonstudies]