To get to the Bridge of Orchy car park and picnic site take the A82 north from Tyndrum. After 6½ miles (10.4 km) turn left at the Bridge of Orchy Hotel. The car park is just beyond the hotel over a bridge, at grid reference NN 295 395.
There are two more car parks in Glen Orchy itself. Follow the directions above but turn left ½ mile (800 metres) before the hotel and follow the B8074 singletrack road southwest. Eas Urchaidh car park is about 5 miles (8 km) along this road, at grid reference NN 242 320. Catnish car park and picnic site is a further 1¼ miles (2 km) on the same road, at grid reference NN 232 305. (via http://scotland.forestry.gov.uk/)