form of motor racing conducted over rough, unmarked, often desert terrain. An outgrowth of the post-World War II popularity of motorcycle trail racing, offroad racing involves contestants racing from checkpoint to checkpoint along improvised routes.

Numerous offroad race circuits have developed, notably Score International Off Road Racing, which hosts the Baja 1000 (extended to the Baja 2000 【miles】 for the 2000 race), run annually in the deserts of Baja California. Offroad races are typically organized by vehicle type—motorcycle, car, truck, and all-terrain vehicle (ATV)—in various stock and custom classes. Such circuits usually recognize annual winners in each class based on points accumulated in individual races.

Still primarily a North American sport, offroad racing has also become popular in Japan and Australia.