The Deweys

What counts as a Dewey

Hills of at least 500 m but under 609.6 m (2,000 ft) with a drop of at least 30 m on all sides, in England, Wales and the Isle of Man. The band picks up exactly where the Hewitt cut-off ends.

Compiled by Michael Dewey and published in Mountain Tables (1995) to extend prominence-disciplined bagging below the 2,000 ft line. The list uses the same 30 m drop rule as the Hewitts, so the two read as one continuous ladder split at 609.6 m. Scotland and Ireland have their own equivalents (the Donald Deweys and Myrddyn Deweys) which are separate lists, not part of this one.

OpenFell holds every GB member of this list. Heights, drops and grid references are the surveyed figures from the Database of British & Irish Hills, not the round numbers printed in older guidebooks — so a hill occasionally sits a metre either side of where you expect it.

What else the Deweys count for

Most British hills appear on more than one list, so a single walk often ticks several boxes at once. Of the 420 Deweys:

• 30 also appear on Wainwrights.
• 10 also appear on Wainwright Outlying Fells.
• 6 also appear on Historic county tops.

Counted against the other lists OpenFell holds in full. Lists the site carries only part of — Marilyns, HuMPs, Simms and the rest — are left out rather than reported as a fraction of themselves.

Where they are

They span Wales and England, with 6 sitting astride the England–Scotland border itself. The list spreads across 24 hill-survey regions, concentrated in Barmouth to Betws-y-Coed and Bala.

Twelve busiest regions shown, of 24 — browse them all.

237 sit inside a national park: Eryri (Snowdonia) (78), Lake District (53), Yorkshire Dales (36), Bannau Brycheiniog (Brecon Beacons) (20), Peak District (20), Northumberland (15), Dartmoor (13), Pembrokeshire Coast (1), Exmoor (1). Park byelaws can restrict camping and access beyond the general position for the nation.

How the heights fall

All 420 Deweys, tallest first

Hill data from the Database of British & Irish Hills v18.3 (CC BY 4.0). Drop is the descent to the hill's key col; a dash means it is not recorded in our dataset. Follow any name for grid references to ten figures, access rights, live summit weather and today's daylight.