Railway Reserves Heritage Trail, Perth Hills
Multiple potential starting points, we started at the carpark located at:
100 Swan View Rd, Swan View WA. (end of Morrison Road)
The 41km loop takes you through Swan View Tunnel, John Forrest National Park, Parkerville, Mundaring Sculpture Park, multiple pubs, taverns and cafes - just to name a few attractions! The trail is almost entirely comprised of gravel, with a short stretch of bicycle/shared paths on the homestretch to Swan View. The trail is fairly well signed as you go.
More information and a useful PDF map can be found at: