Located in the Bow River Valley of Banff National Park, Tunnel Mountain is nearly completely surrounded by the town of Banff and the Banff Springs Hotel. Tunnel Mountain gives its name to the Tunnel Mountain Formation, a geological formation preserving fossils back to the Carboniferous period in a bedrock of sandstone.

This is a popular, well-walked and well-maintained trail with easy access for visitors. From the top, one has a picturesque view of the town of Banff, the Bow Valley and Spray River, as well as Mount Rundle, the Banff Springs Golf Course, and surrounding peaks. This hike is popular during summer, spring and autumn, and is a 4.3 km round trip taking 2 to 3 hours to summit. Visitors are advised to check the trail conditions and to wear suitable footwear as the trail can be icy and treacherous. Bikes are not permitted.