Matt Bauer was also part of a group from Cardiff running the Boston Marathon yesterday.
Pictured on the right here, with his friend Stuart Trimby, he told us he feels very lucky at having crossed the line just one minute before the explosions happened.
At least three people were killed in the blasts, and more than 100 injured.
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It will be cloudy and misty tonight with outbreaks of rain.
The icy area where the man fell at Clogwyn Coch has been described as an "accident blackspot".
Fire services are dealing with a blaze at a disused chapel in Deeside. The fire started around 12:22 this afternoon on Glynne Street.