Nantlle Ridge from Nebo up Garnedd-goch: route map, distance and time
700 m · Snowdonia
A hard mountain walk to the summit from Llyn Cwmdulyn road-end car park, Nebo.
Nantlle Ridge from Nebo starts at about 233 m and gains 506 m over 4.1 km to 685 m on the track. It is steep from the start: the first kilometre climbs 184 m (18%). The steepest kilometre is the one ending at 1 km, which climbs 184 m at an average of 18%, with a 500 m stretch from 0.5 km at about 28%. It keeps climbing at 12% to the top. About 38% of the way is steeper than 1 in 5, so expect hands-on-knees going and a slow descent.
Nantlle Ridge from Nebo at a glance
| Distance | 4.1 km one way, to the top |
|---|---|
| Ascent | 530 m |
| Climb on the track | 506 m up, 57 m down on the way |
| Start and top of the track | 234 m to 685 m (summit 700 m) |
| Steepest 500 m | About 28%, from 0.5 km |
| Steeper than 1 in 5 | 38% of the way |
| Time up | 1h 40m by Naismith's rule |
| There and back | 2h 30m, down the same way |
| Grade | Hard |
| Start | Llyn Cwmdulyn road-end car park, Nebo |
| Start grid reference | SH 487 498 |
| Summit grid reference | SH 511 495 |
| Parking | Llyn Cwmdulyn road-end car park, Nebo |
Nantlle Ridge from Nebo map
The track from the start (green) to the summit (blue), with a marker at each kilometre.
Height profile and getting to the start
Download the Nantlle Ridge from Nebo GPX
Ascent only: plan your way down. A planning track, not checked on the ground; it doesn't show safe scrambling moves. Track data © OpenStreetMap contributors (ODbL), heights from a terrain model.
Nantlle Ridge from Nebo kilometre by kilometre
Height, climb and average gradient for each kilometre of the track, with a grid reference at the end of each one to check your position on the map.
| At | Height | Climb | Gradient | Grid ref |
|---|---|---|---|---|
| 1 km | 417 m | +184 m | 18% | SH 492 490 |
| 2 km | 593 m | +175 m | 18% | SH 498 484 |
| 3 km | 542 m | -51 m | -5% | SH 507 486 |
| 4 km | 675 m | +132 m | 13% | SH 510 494 |
| 4.1 km | 685 m | +11 m | 12% | SH 511 495 |
How long Nantlle Ridge from Nebo takes
| Pace | To the top | There and back |
|---|---|---|
| Brisk 6 km/h, 8 min per 100 m up | 1h 25m | 2h 5m |
| Steady (Naismith) 5 km/h, 10 min per 100 m up | 1h 40m | 2h 30m |
| Relaxed 4 km/h, 12 min per 100 m up | 2h 5m | 3h 5m |
Times leave out stops. Coming down the same way, the table counts the ascent once; steep descents on rough ground can be as slow as the climb.
- Today: sunrise 07:07, sunset 16:54. Start by 13:24 to be down before dark, allowing 2h 30m for the walk and an hour for stops.
- Tomorrow: sunrise 07:09, sunset 16:52. Start by 13:22 to be down before dark, allowing 2h 30m for the walk and an hour for stops.
Garnedd-goch summit weather for this route
-
Poor Today Wednesday 28 October
Moderate drizzle, up to 9°C at the summit, feeling as cold as 1°C, summit wind 42 mph gusting 52 mph, 92% chance of rain. Rated Poor. Sunrise 07:07, sunset 16:54.
-
Marginal Tomorrow Thursday 29 October
Moderate drizzle, up to 8°C at the summit, feeling as cold as 2°C, summit wind 32 mph gusting 41 mph, 63% chance of rain. Rated Marginal. Sunrise 07:09, sunset 16:52.
Best day of the next seven for Nantlle Ridge from Nebo: Tuesday 3 November, with summit gusts around 11 mph and a 0% chance of rain.
Hour-by-hour Garnedd-goch forecast
Before you go, also check: MWIS Snowdonia forecast · Met Office mountain forecast.
What to take today
- A warm layer, hat and gloves: it feels like 1°C on top.
- Waterproof jacket and overtrousers: 92% chance of rain.
- A windproof layer, and poles for balance in gusts to 52 mph.
- Map and compass, and the skills to use them. A phone is a backup, not a plan.
- A head torch, food, water, a charged phone and a small first aid kit.
About Garnedd-goch
More about Garnedd-goch, with the live forecast.
Challenges that include Garnedd-goch
More walks from Llyn Cwmdulyn road-end car park, Nebo
Routes in Peakify's guides that start within 500 m of this one, for another day from the same car park.
- Nantlle Ridge from Nebo up Craig Cwm Silyn
- Llynnau Cwm Silyn approach up Craig Cwm Silyn
- Nantlle Ridge from Nebo up Mynydd Graig Goch
Other routes up Garnedd-goch
| Route | Distance | Ascent | Time up | Grade |
|---|---|---|---|---|
| Nantlle Ridge from Rhyd Ddu | 7.1 km one way | — | — | Scramble |
In an emergency
Call 999, ask for the police and then mountain rescue. Give your location (the start is at SH 487 498, the summit at SH 511 495), what happened and how many are in your group. If you have no signal for a call, a text to 999 works once you have registered your phone with emergencySMS: text "register" to 999 before you go.
Nantlle Ridge from Nebo: questions and answers
How far is Nantlle Ridge from Nebo?
Nantlle Ridge from Nebo is 4.1 km one way to the summit of Garnedd-goch, with 530 m of ascent. There and back by the same way is about 8.2 km.
How long does Nantlle Ridge from Nebo take?
About 1h 40m to the summit of Garnedd-goch and 2h 30m there and back by Naismith's rule (5 km/h plus 10 minutes per 100 m of ascent), before stops. A relaxed group takes nearer 3h 5m for the round trip.
How steep is Nantlle Ridge from Nebo?
The steepest 500 m averages about 28%, starting 0.5 km from the start, and 38% of the way is steeper than 1 in 5. Nantlle Ridge from Nebo climbs 506 m in all on the track.
Where do you park for Nantlle Ridge from Nebo?
Nantlle Ridge from Nebo starts from Llyn Cwmdulyn road-end car park, Nebo. The grid reference is SH 487 498. Llyn Cwmdulyn road-end car park, Nebo
Is Nantlle Ridge from Nebo suitable for beginners?
Not as a first mountain. Peakify grades it Hard: steep, rough ground where a slip matters. Build up on an easier route first.
What time should I start Nantlle Ridge from Nebo today?
By 13:24 at the latest. Sunset on Garnedd-goch today is 16:54, Nantlle Ridge from Nebo takes about 2h 30m there and back, and that leaves an hour for stops. Start earlier in winter or if the forecast turns.
Is there a GPX for Nantlle Ridge from Nebo?
Yes. Download it from this page. It is an ascent-only planning track from the start to the summit, plotted on OpenStreetMap paths and not checked on the ground.