There is a program that is run by KState that has people sign up in groups of 6 to walk across the state of Kansas (423 miles) in 2 months. If one person did it, its about 7 miles a day for 60 days.
I think I might do it. I have done, 2+ miles 5 days a week has done nothing in the last couple of weeks. Ok, its done something. I can now see the veins on my arms really well. Its just not the effect I am looking for.