Various road closures are in place for the Perth Running Festival, with motorists urged to plan ahead to avoid delays.

The marathon started at Optus Stadium at 6am, with the half marathon on its way at 7.40am.

The 4km dash is the next event to start from the stadium at 8.45am.

It means there are rolling road closures until 1pm, with the 10km streamer starting at Langley Park at 9.40am.

ROAD CLOSURES

Adelaide Terrace, eastbound from Plain Street to Hay Street from 3:30am – 7:30am

Hay Street, both directions from The Causeway to Braithwaite Street from 3:30am – 7:30am

The Causeway, eastbound from Riverside Drive to Great Eastern Highway from 3:30am – 7:30am

Braithwaite Street, both directions from 3:30am – 7:30am

Sailani Avenue, both directions from Nelson Crescent to Nile Street fr

See Full Page