Race anywhere in San Andreas by challenging nearby players to an Impromptu Race - just set a custom Waypoint or use a Quick GPS location and issue a challenge.
You can find Impromptu Races in the Interaction Menu.

Race anywhere in San Andreas by challenging nearby players to an Impromptu Race - just set a custom Waypoint or use a Quick GPS location and issue a challenge.
You can find Impromptu Races in the Interaction Menu.