The Fun Run was as described: both a run, and fun. I mostly run on grass so I wasn't sure how I'd find the route - but it was good. The run was enjoyable; there was a good atmosphere and the light rain was actually pretty good running weather.
My only criticism is that the start of the race was quite chaotic: it seemed to start early, without much announcement, and it wasn't entirely clear where the start was... I was gone by it before I was sure the race was on. But this is a quibble, and overall the organisers did a good job.