Tom spotted this and posted on FB but just in case anyone might be interested here and not heard about, it sounds like great fun and there's one at Cheltenham Racecourse on the 2 May. There is an entry fee but check out the web site for full details.

What is Blacklight Run™?​
 
​Blacklight Run™ is a unique night 5K fun run focused less on speed and more on UV Neon Glowing fun with friends and family. Glowing participants come from all different ages, shapes, sizes, and speeds; every participant will get Glowed​™ and has the time of their life. Whether you are an avid runner or a walk around the park walker, the 3 miles of the Blacklight Run™ course will have you glowing and waiting for the next one!
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