So I have signed up for the southern Alberta cannonball run on 12 June. I am doing the 500 mile one and is to be complete in 12 hours over 919kms. I will strap the bag on the back and take water etc. Will do stretcher excercises at each stop. Have allowed 4 x 1/2 hour stops and multiple stretch stops. I can go 250kms on a tank and the verification stops pretty much match those numbers. I am not going to abide by the maximum posted speeds. Probably go slower! More updates later.