The arch in my right foot feels like it's fairly bruised and I feel that if I follow my running program for the rest of the week that I'm just going to prolong the injury or even make it worse. The rec center at my school has "x bikes" which are stationary type bicycles. Today instead of running, I rode for 32 minutes (the equivalent of 4 miles ran at 8 minute pace). Do ya'll think if I do this Wednesday, Thursday, and Friday, then try to do my regular run on Sunday that I will be ok? The run on Sunday is 16 miles and I just really don't know if I'll be able to do it with my foot like it is.