Here is a brief analysis of the Mille Cymru and how difficult it will be based on the route here

I don't want to put anyone off but as a lot of people are planning their season around it, let's take a look....

bikehike.co.uk - Course CreatorThe headline climbing figure is an eye watering 13,500 metres. Or to put it another way over 8 miles straight up. Or 150% times the height of mount Everest. I do note that John went to the Himalayas this year.

So the average climbing over the entire route will be 13.17 metres per km

By comparison, the climbing figures per km for the Kernow and South West 600 is 13.66 and the Bryan Chapman Scenic is 13.71

So the climbing per km on the Mille Cymru is similar to the climbing per km on a tough 600

That's the bad news. The good news is that the speed requirements for the 1000 are lower, 13.333km/h.

Doing a 600 at this speed would give an additional 5 hours over the usual 600 speed of 15km/h

So if you can do a BCM scenic or a K&SW in less than 40 hours then a possible way of looking at the Mille Cymru might be to do the first 600 in 40 hours, have an 8 hour rest and then do the last 400 in the remaining 27 hours

I must admit the only time I did the BCM scenic it took me over 40 hours. But I am cautiously optimistic that this ride is at least possible