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Martin's Marathon weather blog

Martin says whether you're running or watching, the weather will be perfect Credit: ITV News London

Perfect weather for the Marathon on Sunday.

As a runner you don't want it too hot or too cold, as a spectator you don't want it too wet. With that in mind, Sunday's forecast looks just about perfect for everyone.

It will be a chilly start to the morning with dawn temperatures around 3 degrees. By the time most fun runners are setting off temperatures will have risen to 7 or 8. The winds will be light and it will be a mix of sunshine and cloud.

For spectators the great news is that it will be staying dry. By the time most competitors are finishing the race temperatures will have risen to 14 degrees - which is about average for an April afternoon. .

You'll want a jumper if you're standing around cheering on the runners but with the sun shining it will be easily nice enough to enjoy a celebratory drink in a beer garden.

All you've got to worry about now is making it around the 26.2 mile course

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