Mountain sport or Alpine sport is one of several types of sport that take place in hilly or mountainous terrain.
Notable major classes of mountain sports (with sub-classes) include:
Climbing-based: Mountaineering (including alpine climbing and expedition climbing), ice climbing (including mixed climbing and dry-tooling), rock climbing (including aid climbing, big wall climbing, and multi-pitch climbing), and Via Ferrata climbing
Jumping-based: BASE jumping, hang gliding, and wingsuit flying
Skiing-based: Backcountry skiing, freeriding, ski-BASE jumping, ski touring, and ski mountaineering
Walking/orienteering/running-based: Adventure racing, fell running, hillwalking, mountain marathon, scrambling, skyrunning, and trekking
Other specific classes of mountain-sport include: Canyoning Mountain biking
See also List of sports Glossary of climbing terms