Yes, get yourself a copy of The Age-Graded Tables compiled by the World Association of Veteran Athletes (WAVA) and published by National Masters News, PO Box 2372, Van Nuys, CA 91404. They enable you to "quickly and easily compare performances at different ages and in different events". Find out more unofficial stuff about age-grading on the Valley Striders website http://freespace.virgin.net/bob.jackson/striders.htm