ations ▁ ▁These ▁f ences ▁are ▁combinations ▁of ▁banks , ▁logs , ▁water , ▁d itch es ▁and ▁other ▁elements . ▁ ▁All ▁of ▁the ▁j umps ▁are ▁placed ▁within ▁ 1 – 3 ▁str ides ▁of ▁each ▁other , ▁and ▁are ▁meant ▁to ▁be ▁jump ed ▁as ▁a ▁series ▁in ▁a ▁specific ▁order . ▁Also ▁see ▁Norm andy ▁bank , ▁Sun ken ▁road , ▁and ▁C off in . ▁They ▁are ▁seen ▁in ▁the ▁e quest rian ▁jump ing ▁sports ▁of ▁show ▁jump ing ▁and ▁event ing ▁( both ▁the ▁cross - country ▁and ▁stad ium ▁jump ing ▁phases ), ▁but ▁are ▁un common ▁in ▁h unt ▁seat ▁competition . ▁ ▁Com bin ations ▁are ▁often ▁one ▁of ▁the ▁challeng es ▁of ▁a ▁course , ▁and ▁the ▁course ▁designer ▁knows ▁how ▁to ▁manipulate ▁the ▁distances ▁and ▁types ▁of ▁obst acles ▁to ▁make ▁them ▁more ▁difficult . ▁ ▁Com bin ations ▁are ▁named ▁by ▁their ▁number ▁of ▁elements . ▁Double ▁and ▁triple ▁combinations ▁are ▁the ▁most ▁common . ▁In ▁general , ▁the ▁more ▁elements ▁involved , ▁the ▁more ▁difficult ▁the ▁obst acle . ▁However , ▁other ▁variables ▁can ▁greatly ▁influence ▁the ▁difficulty : ▁▁ ▁Dist ance ▁between ▁Ob st acles : ▁the ▁course ▁designer ▁may ▁short en ▁or ▁length en ▁the ▁distance ▁from ▁the ▁usual ▁ 1 2 - foot ▁st ride . ▁The ▁most ▁extreme ▁case ▁is ▁when ▁the ▁designer ▁puts ▁enough ▁room ▁for ▁a ▁half - st ride , ▁in ▁which ▁case ▁the ▁r ider ▁must ▁short en ▁or ▁length en