Yesterday I completed this route.
Starting around 7am from Elterwater Youth Hostel, I visited Eskdale Youth Hostel then Borrowdale Hostel, High Close Hostel and back to Elterwater. It took me 10 hours and 47 minutes. The above list of checkpoints is not the full list; there are 23 checkpoints plus the three Hostels to visit.
I only had a previous schedule from someone's successful attempt back in 1986 to go on - Brian Jackson did it in 11 hours and 3 minutes.
It is a fantastic route and I got one of the best days of summer to do it in. I ran solo, supplementing provisions with some food at Eskdale Hostel and a Snickers and can of Coke at Borrowdale Hostel.
I can't believe it's not more popular, for BG training or just as a more 'do-able' traverse of some of the lakeland fells.