My watch measured short because of losing the signal in the tunnel at the end, but I definitely think it was long. At 3 miles my watch was saying 5k and my splits should have meant a faster time. I managed under 40 minutes anyway, which was my target, but I think it was actually sub-39 minutes! It doesn't really matter because it was a one-off event and I loved the Chariots of Fire touch.
Great medal and someone beeped me today when I was running along in my t-shirt. Not sure if it was to do with the t-shirt but told myself it was!