The Great South Run will remain in Portsmouth for at least three more years.
A new deal has been agreed between the organisers and the city council.
The event attracts 16,000 runners and is said to bring in more than £3m to the local economy.
It's believed that the race layout could change from year to year to facilitate the ongoing flood defences that are being installed along the seafront.This year's route began at South Parade in Southsea, with runners setting off along Clarence Esplanade.
From there, they headed towards the Historic Dockyard and HM Naval Base before moving east past Victoria Park.