Och! Just the one!
Endurance, no other reason than it looks like great fun.
There's a few that I would like to have continued and taken to the next level.
Eventing, Hunter Trials or Working Hunter classes. I lost my love for jumping in my twenties and if I'd my time again, I think I'd like to have another try at them.
Showing Highlands, ridden, in-hand or working harness.
Driving, a relative had Cleveland Bays and Clydesdales and I'd love to have a team.
Horse Archery, I combined both of my sports on one occasion and I wish I'd done it sooner and kept it going!
The best apple will be on the highest branch. Bidh an t-ubhal as fheārr air a' mheangan as āirde. (Scots Gaelic proverb)