Test yourself on a custom built bike racing circuit. There’s a small climb every lap that you won’t even notice if you’re just cruising. Terrain - Slight undulations all the way, no big climbs. Loops are rides where the start and finish are at the same point, this lets you do multiple laps without getting weird distances in Strava etc. To ride multiple laps of a ride non-stop, go to Settings then select Laps from the Ride Modes menu.