The mass participant running event, Run Melbourne, will affect inner city bike routes next weekend on Sunday 24 July.
There are more than 30 road closures and access restrictions around the city centre, Docklands, Southbank and South Yarra during the morning.
Run Melbourne has multiple events taking various routes for the expected 12,000 runners.
The finish line and event centre will be at the Grand Slam Oval at Melbourne Park.
The organisers have provided the following information to help bike riders on the day.
From the east (6:45 am – 12 pm)
Main Yarra Trail north of the river (at Morell Bridge): head right to Gosch Paddock/Olympic Boulevard then left over Morell Bridge – via pathway.
Main Yarra Trail south of the river (at Morell Bridge): loop up and head down Anderson Street, Leopold Street and cross the running course at Toorak Road/Park Street crossing with pedestrians continuing along the trail to Boathouse Drive boatsheds, up ramp and cross with TC/security at pedestrian lights. Loop up and round over Morell Bridge (then see above option 1)
From the south (4–8:15 am)
Via St Kilda Road up towards Southbank Boulevard: follow Southbank Boulevard to the river and get off and cross runners’ route in gap at pedestrian crossing to continue on Queens Bridge Street heading north.
From the north (7–8 am)
Capital City Trail (at Docklands Drive): continue south by crossing at Dudley Street intersection to head down south on Harbour Esplanade.
There is more information available here.