Number | Description | OS Grid |
| Park on A5 near water company road end 400m W of Helyg | SH68776027 |
1 | Follow water company road ENE | SH69586195 |
2 | Continue N 400m on track then ascend path N to col | SH69446331 |
3 | Ascend NW on narrow SE Ridge of Carnedd Llewelyn to above Craig yr Ysfa | SH69216365 |
4 | Continue ascent NW on broadening ridge | SH68906418 |
5 | Continue NW on path to Carnedd Llewelyn summit (3000ft+) | SH68356445 |
6 | Descent S on path following S ridge | SH68226375 |
7 | Head SSW on narrow ridge to join the E ridge of Carnedd Dafydd | SH67816322 |
8 | Continue W on ridge | SH67326308 |
9 | Continue W to start of gentle ascent | SH66886301 |
10 | Ascend gentle slope W to Carnedd Dafydd summit (3000ft+) | SH66246304 |
11 | Descend SW to Carnedd Fach | SH65796266 |
12 | Continue SW to col | SH65486226 |
13 | Ascend S turning SE to Pen yr Ole Wen | SH65536195 |
14 | Descend ESE above crags left | SH66046177 |
15 | Continue descent ENE to join track beside Afon Lloer | SH66556190 |
16 | Follow track S to Tal y Llyn Ogwen house, then road 400m to A5 | SH66836052 |
17 | Follow A5 trunk road E to start | SH68776027 |