The lowest level you can adventure here is 10, and the highest available Dungeon here is 40.
Use "I" for inventory, then on the Mount tab right-click the horse. This summons your mount. Some racers may get an Epic mount. Carrots can increase or decrease your speed. Ogres just make it hard to see. Palisades will break, opening paths to slower racers that the leader did not have. At the end there are 4 chests: Gold, Silver, Bronze and Wood. The Gold chest MAY be a Royal chest but this does not seem to improve the rewards.
The Wood chest will give 10 tickets to each racer (IF you have 4 racers), but only the first 3 across the finish line get the other chests.