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
Adam Lallana believes sticking together is key to Liverpool turning around their season
A cold start. Damp midweek. Milder but breezy by Friday
A twitter row has broken out between the Mayor of Liverpool and the actress Kim Cattrall after she visited the city this weekend.