Watford Harriers is a community athletics club aimed at all ages and abilities and caters for all age groups from 7 upwards in road and x-country running, and track and field athletics. and is a member of several leagues including the Chiltern Cross-Country League, Southern Mens T&F League, Southern Womens T&F League, National Junior League, eastern Young Athletes League. It also stages Open track meetings and promotes both the Watford Half Marathon and the Watford Open Graded meetings.