Thousands of runners are gearing up to take part in todays annual London Marathon - with temperatures expected to soar to 20C.
Participants will make their way through the historic course from Greenwich to the Mall on what is expected to be a bright and sunny day, with the occasional rainy spell.
The 46th edition of the event is set to feature Sir Mo Farah and rugby World Cup-winning captain Ellie Kildunne as the official starters for all three races.
The current course record set by Kenyan runner Sebastian Sawe is said to be under threat - after he won last year’s edition in two hours, two minutes and 27 seconds.
His main rival is Ugandan Jacob Kiplimo, the Chicago Marathon winner and last year’s London runner-up.
But many of the days spectators will of course have their eyes on friends and family participating in the race - who may be first-time runners or otherwise hoping to set a new personal best.