What mountain bike race formats does AusCycling run, and how long are the courses?

From the 2026 AusCycling Mountain Bike Technical Regulations, Section 2:

• Cross-Country (XCO): the Olympic discipline. Course 4km to 6km (3.5km to 6km at national level, with a 9 to 18 minute target lap), no more than 15% paved or sealed road.
• Cross-Country Short Course (XCC): a course up to 800 metres long, with lap times of 1:00 to 1:30 minutes.
• Cross-Country Marathon (XCM): 60km to 160km (preferred 100km), as a single loop, point-to-point or maximum three laps.
• Cross-Country Eliminator (XCE): a course up to 1km, with riders racing in groups of four and eliminated in a format similar to four cross.
• Super D (SD): a point-to-point, predominantly descending course of at least 2.5km, mass start, eliminator or time trial.
• Cross-Country Endurance (XCEN): a multi-lap event of 1 to 24 hours, judged on laps completed.
• Cross-Country Point-to-Point (XCP) and Stage Race (XCS): point-to-point courses of 20km to 60km. Stage Relay (XCR) is a team event, traditionally one XCO lap per rider.
• Downhill (DH): a 1.5km to 3.5km point-to-point course with a race time of two to five minutes, and a maximum of 3% paved road.
• Enduro (EDR): liaison stages with a maximum allowed time, and timed special stages (predominantly descending) that add up to the overall time.
• Also covered: E-Mountain Bike, Four Cross, Observed Trials, Pump Track and Alpine Snow Bike. Four Cross, Pump Track and Alpine Snow Bike follow UCI Part IV Mountain Bike regulations.