The Isle of Man event is called The Manx 100. http://www.manx100.com. 26th July 2015.
http://singletrackworld.com/forum/topic/manx-100-content-as-long-as-the-race
http://singletrackworld.com/forum/topic/the-manx-100 (note Matt Jones comments on here re comparison to Kielder)
There are some forum posts and blogs about the 2014 event (third year running, won by Scott Cornish in 10hr 40 min) as well as some on the 2013 event (won by Rich Rothwell in 9hr 40 min (easier route)).
Scott’s blog
http://www.mulebar.com/blogs/muleblog/15032293-the-manx-100-a-race-report-by-mule-scott-cornish
Ricahrd’s blog (short his story was actually an article in Privateer)
http://www.richyroth.com/the-manx-100-and-privateer/
Matt Jones blog
Manx100
Andy Howett
http://andrewhowett.blogspot.com/2013/08/the-manx-100-and-bit.html
Sure there are others to which I apologise for missing !
2015 will be similar format to 2014, with some tweaks on the route. Start and finish is at the Grandstand. Top 3 finish will get you on the TT podium 🙂
100km option (3250m of climbing) as well.
£40 if you enter before end of December.
You can come over on the boat as a foot passenger with your bike (which travels free). B&B’s / hotels in Douglas to suit all budgets. Start around 1 mile from the centre of Douglas.
If the website (www.manx100) doesnt answer your queries, please contact me nigel@manxmtb.com.
Nigel