Strava is a route-planning and activity recording app used by millions of cyclists across the world. It launched in 2009. in 2020 it passed 3 billion activity uploads.
Strava's smartphone app is commonly used to record rides and other activities, although it's also possible to sync to Strava from Garmin, Wahoo, and many other GPS devices. The Strava app uses ride data to build leaderboards of user-generated segments (pre-defined sections of route) with the fastest time given the title of KOM (King of the Mountain) or QOM (Queen of the Mountain)
Strava's premium offering, Strava Summit, includes a range of extra features including a tracking beacon, fitness analysis, training plans and more.