Start Birdwood, Head west, turn right onto Warren Rd, Continue right down Williamstown main street and onto Lyndoch. Continue over cross road in Lyndoch and follow through to Sandy Creek. Turn left back through Cokatoo Valley and turn right onto Whispering wall road to Williamstown. Turn right onto Main St and then right at Williamstown bakery and ride through to Chain of Ponds. Turn left on Adelaide Mannum road back through Gumeracha to Birdwood. 82.5 kms/