Half Distance Triathlon Kraichgau: Ultimate Race Experience Swim: Dive into the crystal-clear waters of Hardtsee in Ubstadt-Weiher for a one-loop 1.9 km (1.2 mile) swim. Enjoy flat banks and perfect conditions with an average water temperature of 73°F (23°C). Bike: Tackle the one-loop 90 km (56 mile) bike course through the stunning "land of 1000 hills." This route features challenging climbs and fast straights, winding through picturesque forests and vineyards. Discover why Kraichgau is a ...