The Río Simpson is a river located in the Aysén del General Carlos Ibáñez del Campo Region of Chilean Patagonia. It originates east of the Andes mountains and flows through the Simpson River Valley. The river is bordered by the Río Simpson National Reserve, a protected area. The overall character of the river is described as tranquil, making it suitable for kayaking tours led by professionals. These tours offer a way to meet the tranquil lakes and rivers around the reserve. The river valley is a scenic area, with accommodations such as hotels and private cabins overlooking it, particularly noted near the south access of the city of Coyhaique and on the banks between Coyhaique and Puerto Aysén. The region is recognized for birdwatching, indicating a presence of avian wildlife. The existence of commercial kayak tours within the national reserve confirms that paddling is an established activity on this section of the Río Simpson.