I know I am fast enough to race in a C class but I don't know if I am in good enough shape to finish a race. I have been running for a little while now, in the beginning I could only run half a mile (pathetic). But now I run 2.5 miles a day which isn't bad. My goal is to run 5 or 6 miles a day and I do push-ups every other day to help build strength in my arms. So when how many miles a day should I be able to run before I race? Endurance is always my biggest problem. But since I have started running I haven't gotten the chance to ride and see the difference in myself.