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Snowdon Summit loop, Telegraph Valley & the Llanberis Path — Snowdonia National Park

Routes

Running trails & routes

Snowdon Summit loop, Telegraph Valley & the Llanberis Path — Snowdonia National Park

Hard

4.8

(4)

451

runners

Snowdon Summit loop, Telegraph Valley & the Llanberis Path — Snowdonia National Park

02:55

18.9km

1,100m

Running

This difficult jogging route, the Snowdon Summit loop, Telegraph Valley & the Llanberis Path, offers a challenging yet rewarding experience through Snowdonia National Park. You will cover 11.8 miles (18.9 km) with a significant elevation gain of 3601 feet (1098 metres), typically taking around 2 hours and 55 minutes to…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

Start point

Parking

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4.57 km

Cwm Maesgwm (Telegraph Valley)

Highlight • Trail

Cwm Maesgwm is known as Telegraph Valley because of the power lines that run up it. It's a great way of gaining height out of Llanberis without using the busy …

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10.5 km

Snowdon Summit (Yr Wyddfa)

Highlight • Summit

Snowdon (Yr Wyddfa) is perhaps the most ascended mountain in the world, and with good reason. This is a majestic mountain, as is befitting of Wales' highest point.

Its glory …

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14.3 km

Llanberis Path

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The route from Llanberis is considered the easiest to reach the summit. In terms of terrain, it is a T1 and always very wide. In some places, however, the path …

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18.9 km

End point

Parking

Way Types & Surfaces

Way Types

6.15 km

3.98 km

3.46 km

1.99 km

1.75 km

835 m

585 m

189 m

Surfaces

9.14 km

4.42 km

2.38 km

1.72 km

1.00 km

268 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (1,040 m)

Lowest point (110 m)

Weather

Wednesday 13 May

11°C

4°C

63 %

Additional weather tips

Max wind speed: 23.0 km/h

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This route was planned by komoot.

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Snowdon Summit loop, Telegraph Valley & the Llanberis Path — Snowdonia National Park

Cwm Maesgwm (Telegraph Valley)

Snowdon Summit (Yr Wyddfa)

Llanberis Path

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