You cannot race without great circuits. rFactor has the best collection of laser-scanned and scratch-built community tracks in history.

Great mods need great tracks. While rFactor includes many real circuits, the modding community has vastly improved them.

Because rFactor is old, many download links are dead. Use these resources:

Often cited as the single greatest mod ever made for any sim, the mod by the Historic Simracing Organisation (HSO) is a masterpiece.

Tight racing, rubbing fenders, and aggressive curb-hopping define the touring car category. 1. WTCC by SimBin / Convert Packs

Hand-crafted physics engine unique to each engine configuration (V8, V10, V12) and highly accurate visual damage models. CTDP F1 2006

As we move into the 2026 season, this mod is a standout, featuring complex hybrid systems and aerodynamics faithful to the new 2026 regulations, including active aero components.

The EnduRacers Modding Team set the gold standard for sports car modifications.

Whether you are looking to relive the screaming V10 eras of open-wheel racing, wrestle heavy sports cars around grueling endurance tracks, or slide sideways in a tuned drift missile, the right modifications turn this classic sim into a modern masterpiece. Why rFactor Modding Still Thrives

: The gold standard for track modding. Their versions of tracks like