Thousands of runners race in Nottingham half-marathon
Thousands of runners are taking part in the Nottingham Robin Hood Nottingham half-marathon.
Police said some travel disruption was expected as the race was taking place on the same day as a football match between Nottingham Forest and Derby County.
An estimated 40,000 people were attending the two events.
Race organisers predicted faster times on the new course, which is set along a flatter route than the old one.
The 13.1-mile race is in its 32nd year.
The full marathon is not being held this year after problems were encountered with trams works and increased traffic along parts of the route.
The run started at Victoria Embankment at 09:30 BST, with the Championship match kicking off at the City Ground at 13:15 BST.
Several road closures were in place from 08:00 BST on Sunday morning.
Two special non-stop trains were planned for fans travelling between Derby and Nottingham on Sunday.
A park-and-ride service was operating for the marathon between the Queen's Drive Retail Park and the embankment.
The new half marathon route took runners along Trent Bridge, past Nottingham Castle and through the grounds of Nottingham University.