I started running again about 5 weeks ago, hadn't run long distance in about 10 years(I'm 23 now). Started out at 7:15 and cut it down to 5:45... I can't keep that pace for 3.1 miles... I have done 3.1 in ~21minutes. I'm not sure what's a good time, read online that highschoolers can run sub 5 minutes... I don't know how true that is. Now you know my life story.. Lol.