The Met Office has issued a "yellow" warning of rain for the Midlands this weekend with heavy showers expected to develop in the region this afternoon and into Sunday.
It is thought that as much as 30mm of rain could fall within an hour and 50mm or more in less than three hours this evening.
The Met Office says:
"The public should be aware of the risk of localised disruption to travel, due to surface water flooding and lightning strikes."
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It will be a dry and bright start, however scattered showers will develop.
Rather cloudy, with some rain likely at first.
It's believed there were around 8,000 people who laced up for this year's 10k race.