Thornthwaite Crag
4 classifications here — Simm, Birkett, Synge and Fellranger — belong to lists OpenFell holds only part of, so they have no list page. See how far the coverage goes.

- Height
- 784 m · 2,572 ft
- Prominence
- 30.6 m
- Grid reference
- NY 43150 10050
- Coordinates
- 54.48261, -2.87898
- County / area
- Westmorland and Furness
- Region
- Lake District E
- OS Landranger
- 90
- OS Explorer
- OL5S OL7N
- Summit feature
- rock 45m N of beacon and 10m E of wall
- Key col
- NY 4358 1008 (753.4 m)
About Thornthwaite Crag
Thornthwaite Crag stands west of Haweswater Reservoir and acts as a hub of the Far Eastern Fells, with several valleys radiating from its head. At 784 metres it appears on the Wainwright, Hewitt, Nuttall and Birkett lists among others.
Background written from facts in the Wikipedia article on Thornthwaite Crag (CC BY-SA 4.0). Heights, prominence and grid references come from the Database of British & Irish Hills, not from Wikipedia.
Access rights here
Conditional Right to roam: Right to roam only on mapped CRoW open access land.
Permission needed Wild camping: Needs the landowner's permission — the Dartmoor commons are the only exception in England.
General position for England — local byelaws, seasonal restrictions and closures can override it. Full details: access rights in England · check another location.
Daylight at this summit today
- Sunrise
- —
- Sunset
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- Daylight
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- Civil twilight ends
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Computed astronomically for 54.483, -2.879. Plan your finish with the daylight safety planner.
Summit weather live
Loading forecast for the summit (784 m)…
Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).
Finding the summit
beacon (Wainwright/Birkett) 45m S at NY 43138 10008 is lower. Ground in wall 10m W is of similar height.
The recorded summit point is rock 45m N of beacon and 10m E of wall. That distinction matters on broad or flat tops, where the obvious cairn is not always the true high point.
- Record revised
- 06-Apr-22
- Drop measured from
- NY 4358 1008 · 753.4 m
Survey notes are field observations recorded in the Database of British & Irish Hills (v18.3, CC BY 4.0) by the hill-surveying community.
Which hill this one belongs to
Thornthwaite Crag is not counted as an independent hill in its own right. In prominence terms it belongs to High Street (829 m) — the nearest Marilyn you can reach from this summit without first dropping below its key col, 753 m.
Grouping is by prominence alone: a summit belongs to the nearest higher Marilyn it connects to without a deeper intervening col. Over a large massif that can gather hills no one would walk in a single day, and which few would describe as parts of the same mountain — it is a measure of independence, not a suggested route.
Nearest listed peaks
| Peak | Height | Distance |
|---|---|---|
| Stony Cove Pike | 763.7 m | 1.4 km |
| High Street | 828.5 m | 1.5 km |
| Mardale Ill Bell | 760 m | 1.6 km |
| Froswick | 720 m | 1.6 km |
| Gray Crag | 698.1 m | 1.7 km |
| Ill Bell | 757 m | 2.3 km |