The Sierra Cup Mountain Bike Racing Series wraps up the 2011 season on Oct. 2 with the Sawtooth Ridge Challenge at Northstar-at-Tahoe.

The Sierra Cup is a seven race point series to determine the USA Cycling cross-country mountain bike champions for the Northern California/Nevada region.

The Sawtooth Ridge Challenge, like the other Sierra Cup events, is donating event proceeds to bicycle related causes. Benefiting from this race will be the Truckee Trails Foundation and the Northstar/Giant development team. The series events have also partnered with Waste Not in Incline Village to meet or exceed zero-waste standards.

Racers will ride a 7-mile course that was developed by Northstar Resort for last year’s Collegiate National Championships. Racers will complete multiple laps of the course depending on their ability category. The course will have a mix of trails that include small features like jumps, berms and technical descents. The climbs are spread out to allow time for riders to recover.

There are age and ability categories for all levels of riders. Custom recycled medals are awarded to the top finishers in each category as well as series points. After the race awards, there will be a podium ceremony for the overall series winners. Besides the regional championship medals from USA Cycling, there is also a $1,500 series purse for top riders.

Online registration is available.