Circuito de senderismo de 35.53 km desde Nant Peris. El desnivel positivo es de 4084 m, con una altitud entre 108 m y 1074 m. Duración estimada: 20 h 10 min. Municipio de salida: Nant Peris (Cymru / Wales, Royaume-Uni).
Esta ruta incluye 11 subidas significativas. Con un desnivel acumulado de 3509 m a lo largo de 15.89 km, con una pendiente media del 22.1%.
- Climb 1 (at km 3.41 km): +807 m over 3.36 km, average slope 24.1%
- Climb 2 (at km 7.18 km): +169 m over 987 m, average slope 17.1%
- Climb 3 (at km 9.53 km): +205 m over 891 m, average slope 23.0%
- Climb 4 (at km 11.16 km): +68 m over 450 m, average slope 15.1%
- Climb 5 (at km 12.77 km): +175 m over 436 m, average slope 40.2%
- Climb 6 (at km 17.17 km): +664 m over 1.55 km, average slope 42.7%
- Climb 7 (at km 18.74 km): +79 m over 671 m, average slope 11.8%
- Climb 8 (at km 39.06 km): +1023 m over 4.69 km, average slope 21.8%
- Climb 9 (at km 53.27 km): +189 m over 1.08 km, average slope 17.5%
- Climb 10 (at km 54.95 km): +43 m over 534 m, average slope 8.1%
- Climb 11 (at km 57.56 km): +87 m over 1.24 km, average slope 7.0%
