The River Mole is a river in southern England, flowing through the counties of Surrey and London. It is approximately 50 kilometers (31 miles) long and is a tributary of the River Thames. The river is known for its meandering course and scenic landscapes, making it a popular spot for walking and nature observation. The River Mole begins near the village of Mole Valley and travels through several towns, including Leatherhead and Esher. It features various habitats, supporting wildlife such as birds and fish. The river also plays a role in local history and recreation, providing opportunities for fishing and boating.