Day Trip from Reykjavik: River Rafting on the Hvítá River. Embark on a white-water rafting adventure in Iceland with a trip down the Hvítá River! On this full-day trip from Reykjavik, navigate Class II rapids that wind through an ancient volcanic landscape and the impressive Brúarhlöð canyon. Jump from a canyon cliff into the refreshing waters for an extra thrill, and unwind in the base camp sauna at the end of your journey. Round-trip coach transport from your Reykjavik hotel is included. Book and Save 10%! Day Trip from Reykjavik: River Rafting on the Hvítá River.