Llyn Dinas – Pont Aberglaslyn loop from Pen-y-Pass

Llyn Dinas – Pont Aberglaslyn loop from Pen-y-Pass

Hard

riders

Llyn Dinas – Pont Aberglaslyn loop from Pen-y-Pass

03:52

77.4km

1,010m

Road cycling

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is right next to a parking lot.

Last updated: July 18, 2026

Tips

Temporary access restrictions

Includes segments with temporary access restrictions.

After 20.8 km for 371 m

Customers only

Waypoints

Start point

Parking

Get Directions

139 m

Pen-y-Pass Ascent from Nant Gwynant

Highlight (Segment) • Viewpoint

Voted one of the ten most iconic climbs in Wales, you have to conquer this climb. It climbs gently enough from Nant Gwynant to the summit of Pen y Pass for approximately 6km.

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10.3 km

Llyn Dinas

Highlight • Natural

Beautiful views across Llyn Dinas from the A498. Snowdon is to the north and the Watkin path starts a little further northeast up the road. Views south up onto Mynydd Llyndy which is managed by the National Trust.

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10.9 km

Coed Pant-agored

Forest

16.2 km

Stone Bridge over Afon Glaslyn

Highlight • River

The old bridge over the river or Afon Glaslyn is a great place to pause and watch the water go by. You can see down into the Aberglaslyn gorge with …

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16.2 km

Pont Aberglaslyn

Highlight • Viewpoint

The bridge was probably built in the 17th century and then radically rebuilt and widened in 1795-1796. As with many older bridges, folk tales claimed that the bridge was built …

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18.1 km

Parc y Llŷs

Forest

33.4 km

Country Road with Views of Craig-y-garn

Highlight • Viewpoint

The little road between the A487 at Dolbenmaen in the south and Garndolbenmaen in the north. A high point of about 120m means great views towards the sea in the …

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35.1 km

Quiet Country Lane with Cows

Highlight • Cycleway

Nice alternative to the bigger roads. Surface is pretty good in the whole.

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50.6 km

Lon Las Menai Cycleway

Highlight (Segment) • Cycleway

Lon Las Menai and Lon Las Ogwen are great routes for all cycling abilities; completely without traffic. A safe space shared by people with the same interests.

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55.5 km

Segontium Roman Fort

Archaeological Site

72.4 km

Llanberis Pass – Pen-y-Pass Climb

Highlight (Segment) • Climb

Awesome mountain road from Nant Peris in the west to the top of Pen-y-pass in the east. It's a long climb up from Nant Peris or an exciting descent in …

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77.4 km

End point

Parking

Way Types & Surfaces

Way Types