Games like Lonely Mountains: Downhill
Games like Lonely Mountains: Downhill include Descenders, Session: Skate Sim, Uncrashed : FPV Drone Simulator, Wreckfest, and Assetto Corsa. We matched them by the tags players give Lonely Mountains: Downhill on Steam (Bikes, Sports, Difficult, Indie, and Racing): closest matches first, and among equally close ones the better-known games.

Descenders
Shared: Sports · Bikes · Racing

Session: Skate Sim
Shared: Sports · Indie · Singleplayer

Uncrashed : FPV Drone Simulator
Shared: Sports · Racing · Physics

Wreckfest
Shared: Racing · Physics · Sports

Assetto Corsa
Shared: Racing · Sports · Simulation

Cairn
Shared: Difficult · Indie · Sports

Riders Republic
Shared: Sports · Racing · Bikes

Jalopy
Shared: Racing · Nature · Exploration

Urban Trial Freestyle
Shared: Sports · Bikes · Racing

Hollow Knight: Silksong
Shared: Difficult · Indie · Singleplayer

DiRT Rally 2.0
Shared: Racing · Sports · Simulation

Trials® Rising
Shared: Bikes · Racing · Physics

PIPE by BMX Streets
Shared: Sports · Bikes · Indie

Forza Horizon 6
Shared: Racing · Sports · Simulation

Automobilista 2
Shared: Sports · Racing · Simulation

Superflight
Shared: Indie · Sports · Singleplayer

Hollow Knight
Shared: Difficult · Indie · Singleplayer

art of rally
Shared: Racing · Sports · Difficult

Steep™
Shared: Sports · Simulation · Open World

Noita
Shared: Difficult · Physics · Indie

BeamNG.drive
Shared: Physics · Simulation · Racing

RIDE 3
Shared: Sports · Racing · Bikes

Ride 2
Shared: Sports · Bikes · Racing

Kerbal Space Program
Shared: Physics · Simulation · Indie