| High Roads | ||||||||||
| Part Two: The highest known roads in Great Britain. | ||||||||||
| Rankings | Metres | Feet* | Rd no | Road name | Location/road between | OSGB grid coordinates | Source | Remarks | Top | |
| Section 2.4: B-roads over 400m | ||||||||||
| E | 1 | 598m | 1962' | B6277 | Slack's Rigg* | Alston - Middleton | NY 774 364 | OS-SH | Highest B-road in Britain | 8 |
| E | 2 | 587m | 1926' | B6295 | Allendale Common* | S of Allenheads | NY 852 434 | OS-SH | 10 | |
| E | 3 | 518m | 1698' | B6270 | Lamps Moss* | Nateby - Keld | NY 810 041 | OS-SH | 28 | |
| W | 4 | 516m | 1694' | B4560 | Mynydd Llangatwg** (aka Llangattock Mtn) | Beaufort - Llangynidr | SO 163 159 | OS-SH | Highest B-road in Wales | 30 |
| E | 5 | 511m | 1678' | B6278 | Bollihope Common** | Stanhope - Barnard Castle | NY 991 318 | OS-SH | 33 | |
| W | =6 | (486m) | 1595' | B4246 | Pen-ffordd-goch* | Blaenavon - Abergavenny | SO 254 105 | OS-SH | SH on 1" only | |
| W | =6 | 486m | 1595' | B4391 | The Berwyns** | Bala - Llanfyllin | SJ 016 305 | OS-SH | ||
| W | 8 | 485m | 1590' | B4407 | Ffynnon Eidda* | Ffestiniog - Cerrigydrudion | SH 760 435 | OS-SH | ||
| E | 9 | 482m | 1581' | B6276 | Shot Moss** | Brough - Middleton | NY 827 197 | OS-SH | SH on OS 1:25K | |
| S | 10 | >480m | B976 | The Strone** | Balmoral - Gairnshiel | NO 265 986 | OS-C | Highest B-road in Scotland | ||
| E | 11 | 476m | 1561' | B6278 | Edmondbyers Cross** | Stanhope - Edmundbyers | NZ 003 449 | OS-SH | ||
| W | 12 | 471m | 1543' | B4355 | Crugynnau** | Dolau - Knighton | SO 110 841 | OS-SH | SHs on 1:25K & 1" only | |
| S | 13 | 466m | 1537' | B787 | Glengonnar Station** | Wanlockhead - Leadhills | NS 879 134 | OS-SH | SH alongside road (on old road?) | |
| W | 14 | 455m | 1493' | B4519 | Mynydd Epynt** | Upper Chapel - Garth | SN 964 466 | OS-SH | ||
| S | 15 | 455m | 1488' | B974 | Cairn o'Mount** | Banchory - Fettercairn | NO 650 807 | OS-SH | ||
| E | 16 | 454m | B3357 | Rundlestone** | Tavistock - Two Bridges | SX 576 749 | OS-SH | On 1:25K | ||
| E | 17 | 453m | 1485' | B6114 | Buckstones Moss** | Junction with A640 above | SE 017 136 | OS-SH | ||
| E | 18 | 446m | B3212 | Dartmoor Prison* | Just NW of Princeton village | SX 583 742 | OS-SH | On 1:25K | ||
| W | =19 | >440m | B4368 | Kerry Hill** | Newtown - Clun | SO 148 862 | OS-C | On 1:25K rd twice crosses 440m contour | ||
| W | =19 | >440m | B4501 | Llyn Brenig* | Cerrigydrudion - Sportsman's Arms | SH 959 591 | OS-C | On 1:25K, over 440m contour S of A543 jn | ||
| S | 21 | c440m | B787 | Mennock Hass** | Mennock - Wanlockhead | NS 872 123 | OS-C | On 1:25K, rd seems to touch 440m contour | ||
| E | 22 | 438m | 1436' | B3223 | Blackpitts Gate* | Lynton - Simonsbath | SS 764 421 | OS-SH | SH 437 on 1:25K | |
| E | 23 | 438m | 1434' | B6255 | Newby Head* | Hawes - Ingleton | SD 797 843 | OS-SH | ||
| E | 24 | 438m | B3212 | Water Hill** | Moretonhampstead - Two Bridges | SX 677 813 | OS-SH | On 1:25K | ||
| W | 25 | 428m | 1400' | B4248 | Waun Wen* | Blaenavon - Bryn-mawr | SO 217 110 | OS-SH | SH 428 on 1:25K | |
| S | 26 | >425m | B6355 | Moss Law* | Gifford - Duns | NT 606 646 | OS-C | On 1:25K, well over 425m contour | ||
| E | 27 | 425m | 1392' | B6160 | Kidstones Bank* | Kettlewell - Aysgarth | SD 946 807 | OS-SH | On 1:25K; 424m on 1:50K | |
| E | =28 | >420m | B3223 | Winsford Hill* | Dulverton - Exford | SS 876 342 | OS-C | Well over 420m contour; 426m trig pt by rd | ||
| S | =28 | >420m | B9002 | Meikle Cairn* | Dufftown - Alford | NJ 420 255 | OS-C | On 1:25K rd crosses 420m contour | ||
| S | =28 | >420m | 1358' | B7040 | Leadhills** | Leadhills - Elvanfoot | NS 896 151 | OS-C | On 1:25K, rd crosses 420m contour | |
| W | 31 | 418m | 1370' | B4520 | 1mi S of Griffin Inn** | Upper Chapel - Builth Wells | SO 020 431 | OS-SH | ||
| E | 32 | c410m | 1319' | B3358 | Edgerley Stone* | Challacombe - Simonsbath | SS 719 406 | OS-C | On 1:25K 410m contour touches rd & SH 403 is 200m SE; 1 other SH 403 on this rd | |
| E | 33 | 409m | 1343' | B3224 | Kennisham Hill** | Ralegh's Cross - Wheddon Cross | SS 953 364 | OS-SH | ||
| E | 34 | 404m | 1326' | B6265 | Greenhow Hill* | Grassington - Pateley Bridge | SE 100 639 | OS-SH | ||
| W | 35 | c400m | B4329 | Bwlch Gwynt* | Eglwyswrw - Henry's Moat | SN 074 321 | OS | SH 404 close to road | ||
| (356m) | (1176') | (B5289) | (Honister Pass*) | (Buttermere - Seatoller) | NY 224 135 | OS-SH | ||||
| (318m) | (1043') | (B5292) | (Whinlatter Pass*) | (Braithwaite - Lorton) | NY 205 244 | OS-SH | ||||