The 26.2 mile race round Chester starts at 9am today, with around 2500 runners due to take part. It is the third year the event has been held.
The marathon begins at Chester Racecourse and heads towards the town centre, passing key landmarks including the Cathedral, Eastgate Clock and the Amphitheatre, before looping round through the Cheshire and North Wales countryside and then finishing back in Chester in front of the Town Hall.
More top news
Lots of sunshine around on Bank Holiday Monday, but breezier. Thundery, heavy rain inbound midweek but drier by the end of it
A girl from Neston is doing a trike ride in memory of her sister. Georgie died in 2014, just five days after being born without a windpipe.
The latest weather update plus viewers' photos for ITV Granada