Brolga Bill's Bike Trail (BBBT)
'Twas Brolga Bill, from Rutherglen, that caught the cycling craze,
He turned away the good old wings that served him many days...

This geoart shows Brolga Bill's bike.
It is designed so you can be like Brolga Bill, and complete the trail by bike.
(and hopefully not come to the sticky end like his mate Mulga Bill)
All the puzzles are about bike riding, and can be solved with an easy online search.
The puzzle
The first women's road race in Victoria occurred in Melbourne on Saturday 16 May on a hilly 11-mile (18 km) course through the northern suburbs of Northcote, Heidelberg, Ivanhoe, Alphington and Clifton Hill.
Question: Which year did this race take place?

You can validate your puzzle solution with certitude.