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Off road races have got very steep climbs and are done in the hills. They are generally held on rough terrain and ungroomed uphill courses. There are a few exceptions in eastern US where the hills are highly groomed and have faster terrains. The machines used are mostly dirt bikes or specially modified bikes. Some bikes are made exceptionally long, measuring 9½ feet from nose to tail. There are different categories to race in depending on the cubic capacity of the bikes engine.
The North American Hill Climbers Association (NAHA) has got 3 pro classes & 3 professional classes to compete in. In order to win, the rider has to get to the top in the fastest possible time. There are some courses where not even a single rider is able to climb to the top, in which case the one who reaches the furthest wins. I would suggest watching videos of hill climb racing in Andler/Schonberg located in Belgium, which is known as the impossible climb. One reason contributing to this factor is that not a single bike is allowed to practice on the hill before the race starts.
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Tarmac events are held on closed public roads and private roads. They are not specifically designed for racing. The rider finishing the uphill course the fastest, wins. The courses are mostly narrow and twisty. The National Hill Climb Association has courses on tarmac surface which vary from 400 to 2500 yards in length and rise steeply uphill. They have varied classes to race in. There’s one Road Legal Class which is designed for newcomers. Then there are the usual 0 – 250cc, 250 – 350cc, 350 – 500cc, 500 – 750cc and 750 – 1300cc classes along with one for sidecars and three wheelers.
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By: Akshay Tajbije