Just got back from this ....basically a mass experiment to see whether large running events were possible.https://uk.news.yahoo.com/reunion-5k-test-event-takes-105916005.html
Well marshalled, good attendance, grey drizzle. I got round in a less than inspiring time of 33M - but hey, I'm old :-)
Nice to see a lot of Park Runners supporting the event plus a few South Coast clubs - Stubbington, Lords Hill and Eastleigh runners. Spotted a lady from Cardiff Harriers and spoke to another Park Runner from Rochester.
Its not often I would do a 120 mile round trip for a 5K - but it was fun to be back and I hope the data provided will give those who make the decisions some real-world data to add to that already received.