Grand Tour Cycling

The Basics
Riding over a dark blue spaces will set your speed to a minimum of 5.
Riding over a red spaces will set your speed to a maximum of 5.
Riding over a light blue space will set your speed to a minimum of 4.

Slipstreaming
Slipstreaming  happens when there is a single empty row between two groups of riders. Slipstreaming is applied after all other movement is complete, and repeats until no more slipstreaming happens.

Exhaustion
Any rider who ends their turn with empty track infront of them, after the slipstreaming phase, gains an exhaustion card to their deck.  Between each stage 4 exhaustion cards are removed from each riders deck.