2018 Items > Newmarket & Thurlow P.C. Hunter Trials & Tet., Horseheath > Main X/C Course Class 1 - 2'6" Tetrathlon Classes E & FClass 2 - 3'0" Tetrathlon Classes G,H,I,J,K,LClass 3 - Pairs 2'3"Class 4 - Novice 2'3"Class 5 - Open 2'6"Class 6 - Open 3'0"