Yeah, I asked the question on their facebook. I was told that the times set by the Ultra winners were for a supported record, whilst the times set for their recent runners were unsupported.Whilst not really important, but possibly for the two guys who won the 1st Ultra, I would question the response and suggest that in fact more support was given to the recent 'record' holders than during the ultra's. They had a van in support and no one can tell me that they didn't have some food/drink and extra layers on board, also they had someone guide during the night on at least one section.
I was a CP volunteer during the 2016 race, and took part in the 2017 race.The winners of both years races were not supported apart from being able to access a small drop bag at CP's and grab some food. They did not sleep at all along the way, and had no support in between CP's. As far as the race is concerned too, they were listed as unsupported although some runners were officially supported and had access to a van etc. along the route.