The Kalamunda circuit is 22 kilometre single track trail which forms a mountain biking loop around Paulls Valley and Hacketts Gully. Based on the International Mountain Bike Association’s grading for trail difficulty, the trail is a blue square trail with black diamond technical trail features. The trail is designed for intermediate to advanced XC riding with log rides, log roll over’s, jumps, rock gardens, ladders, drop offs and lots of single track riding. There can be unavoidable obstacles up to 400mm high. All obstacles bigger than the blue rating will have B lines such as jumps and black diamond technical trail features. Although nominally a dual direction trail, most riders seem to agree that it is better ridden in a clockwise direction. None of the climbs are too steep or arduous and there are lots of fun swoopy bermed downhills. The trail is fully signposted. The Kalamunda Circuit is the result of a community project that is a partnership between the Department of Environment and Conservation (now known as the Department of Parks and Wildlife), Lotterywest, the Department of Sport and Recreation, the West Australian Mountain Bike Association and the mountain bike community. The partnership has resulted in a 22 kilometre mountain bike trail that is sustainable, low maintenance and has a low environmental impact. There are car parks on Mundaring Weir Road (at the western end) and at The Dell (at the eastern end). Alternatively a popular place to park is the Calamunnda Camel Farm on Paulls Valley Road, who welcome mountain bikers. The Kalamunda Circuit also connects with the Munda Biddi Trail.
Facilities available at the Calamunnda Camel Farm and The Dell.