Segments & best-efforts
Segments
Cairn matches your activities against segments using PostGIS. Each matched effort is timed and ranked, producing leaderboards (KOM/QOM-style) across the users on your instance. Segment definitions imported from providers (e.g. Strava segment efforts reference their segments) are first-class entities.
Best-efforts
For supported activity types, Cairn automatically detects best efforts over standard distances/durations from your stream data, and tracks personal records. New PRs trigger notifications as part of the import follow-ups.
Browse them under Best-efforts and Records in the web UI, or via the projected read endpoints.