MTB: Mountain bike. MTB is an abbreviation for Mountain Bike, which literally means "mountain bike". This is the most popular and widely used abbreviation in the mountain bike world.

A mountain bike (MTB) or mountain bicycle is a bicycle designed for off-road cycling. Mountain bikes share some similarities with other bicycles, but incorporate features designed to enhance durability and performance in rough terrain, which makes them heavier, more complex and less efficient on smooth surfaces.

Code-compliant e-bikes are allowed on all paved multi-use pathways (Examples: Paved two-lane pathways around town such as the Lakes Basin Path and the Town Loop), as well as in the Mammoth Mountain Bike Park, a fee-based facility. Code-compliant e-bikes are NOT permitted on any trail designated as non-motorized.

If you think you'll enjoy road cycling on smooth tarmac roads and expanding your horizons in the country lanes around you, then a road bike makes more sense. If you want to get away from traffic, explore nature and improve your technical skills, then an MTB is the way to go.