Sims are British hills over 600 metres high, with a drop of 30 metres or more all round. The Sims (SIx-hundred Metre Summits) therefore include all the Munros, Murdos, Corbetts, Corbett Tops, Grahams, Graham Tops, and Hewitts (of England and Wales). There are currently 2530 Sims, comprising 443 Murdos, 670 Corbett Tops, 1001 Graham Tops, 315 Hewitts, and 101 other hills from 600-609m.
Only one person is known to have climbed all the Sims:
| First Sim | Last Sim | ||||||
| Ken Whyte | Fort William | Cat Law | 7B | 1968 | Cruachan Beag | 17E | 21 Sep 2010 |
Last updated: 21 October 2010