8.5 hours is nearly 12 mph average spped and that’s without stops.
7 hours is over 14 mph without stops.
I don’t think the closed roads effect will be that good.
I’m told the queues at the feed stations are always appalling, and OK we will be self-sufficient for food and water but there will always be the need for a bog stop at some point so we are going to have to go quicker than that.
When entering you are told there is an 8.5 hour time limit, at no point do they tell you that you may have less time than this.
Not being able to complete the 100 miles makes the event totally pointless when you are raising money for charity.
We would have chosen a different event if a 7 hour time limit had been given when entering.