Monday & Wednesday: arrive, warm up (jogging round field followed by stretches)...break into groups according to speed....toddle off on run. Each group is led by 2/3 coaches and there is a schedule each month so you can see what your group is due to do (hills, steady, lamp-posts, tempo etc).
Speedwork at the track each Friday. Same basic session for all, but split into 3 groups by speed, with the slower groups doing less repeats and/or longer recoveries
Informal weekend runs are arranged by various individuals, usually based on the group you run with during the week (makes sense as they are your speed group)