The original Buttermere Horseshoe Fell Race (possibly back in 2013). This is by no means definitive as it's been difficult to find any information on this one... it looks like a very tough one.

Registration:
The race starts and finishes by the Loweswater village hall, GR 140210

Kit Requirements:
Full kit required + experience required, ie not one for the novice.

Parking:
???

Race Website:
???


Route Card:

CP	Grid Ref	Name	Split Distance	Split Ascent	Cut-Off
Start	140210	Village Hall
1	175204	Grassmere		-	-
2	203168	Robinson		-	-
3	224153	Dalehead		-	-
4	197129	Innominate Tarn		-	-
5	169146	High Style		-	-
6	148186	Mellbreak (South Top)		-	-
Finish	140210	Village Hall		-	-
Totals			30km	2,750m

GPS File:
Available (see bottom of the post to download)

Route map: