This is a short mission with little action, for the Gold Medal you’ll need to be as quick as possible so consider skipping cutscenes if you’re replaying it. Meet with Beau Gray at Caliga Hall stables to begin the mission, his beloved is to march in the womens rights movement and Beau wants to stop her.
Once on board the wagon, drive as fast as possible through town until you reach the marker. Once again, skip the cutscene if you’re replaying and ignore the cousins that provoke Beau, instead opting to head around the back of the bank to mount up and get out of there. It’s not just a short ride to the next marker, gallop as fast as possible until you reach it.