5.0
(5)
227
runners
31
runs
Jogging around Cemlyn Lakeon offers a unique experience along Anglesey's wild north coast. The region is characterized by its distinctive shingle ridge, which separates a saline coastal lagoon from the open sea. Jogging routes often follow the Anglesey Coastal Path, traversing headlands, grasslands, and rolling hills, providing varied terrain. This area is recognized for its natural features, including the lagoon, which is a significant habitat.
Last updated: June 27, 2026
5
runners
16.0km
01:41
90m
90m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
22
runners
8.65km
01:01
140m
140m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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6
runners
8.37km
00:54
120m
120m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
21
runners
7.77km
00:52
100m
100m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Cemlyn Lakeon
Church Bay is so called because of the nearby St Rhuddlad's Church, Llanrhuddlad which is visible from the bay.
1
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A beautiful viewpoint, small paths, a bit up and down, easily doable.
2
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The ruins are fenced and not directly accessible (probably more to keep the sheep out), but they put up some benches nearby for a break with a view over the sea.
7
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An intriguing quartzite sea stack known locally as the ‘Ladi Wen’ which means ‘white lady’ in Welsh.
3
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A seriously shitty track, don't go wading through the manure, fìor goodness sake it'll never wash off!
5
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Lovely views from a height that looks down on Porth Padrig beach and surrounding area. Path is OK, but can have some grass growing in the centre. Nice and quite road heads in the direction of Llandadrig.
3
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Cemaes Bay truly is a lovely everyman village with a pretty little harbour and two beaches. Both beaches are perfect for all manner of fun beach activities, Sailing, Windsurfing and Surfing. The Fishing can be excellent along the coast behind St Padrig's Church along the headand on the Llanbadrig Ledges. Then, there is the absolutely staggering Anglesey Coastal Path leading to the east towards Bull Bay, Amlwch and all the way around again. This portion of the Anglesey Coastal Path around Cemaes Bay really does take your breath away. More or less everything that has been weighing heavy on your mind and heart dissolves away to a pleasant state of tranquil reflection.
3
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The running trails around Cemlyn Lake offer a good mix of options. You'll find over 7 easy routes, perfect for a relaxed jog, and more than 24 moderate trails for those seeking a bit more challenge. The terrain varies, from mostly paved surfaces to coastal paths and the unique shingle ridge, which can be more strenuous.
Yes, Cemlyn Lake features several excellent circular running routes. For example, the Hidden Pebble Beach – The Harbour Dog-Friendly Café loop from Cemlyn Lagoon is a popular choice, offering coastal views and varied surfaces over 8.9 miles. Another great option is the Church Bay (Porth Swtan) – Traeth y Fydlyn loop from Ynys y Fydlyn, which provides scenic coastal stretches.
Yes, dogs are permitted on the running trails around Cemlyn Lake. However, due to the area's importance as a National Nature Reserve and its rich wildlife, especially the tern colonies, it's crucial to keep dogs on leads at all times. One route, the Hidden Pebble Beach – The Harbour Dog-Friendly Café loop from Cemlyn Lagoon, even highlights a dog-friendly café.
Absolutely. While some paths, like the shingle ridge, can be challenging, many sections of the Anglesey Coastal Path and adjacent country lanes offer easier, mostly paved surfaces suitable for families. These routes allow you to enjoy the stunning coastal scenery and wildlife without overly strenuous terrain.
Cemlyn Lake is internationally important for its birdlife. You might spot sandwich, common, and arctic terns, especially during the breeding season (late April to August). Other birds like oystercatchers, ringed plovers, skuas, and gannets are common. In winter, the lagoon is a haven for waterfowl and waders. Keep an eye on the sea for marine mammals such as bottlenose dolphins and grey seals.
Jogging around Cemlyn Lake offers breathtaking views of its unique natural features. You'll encounter the spectacular, naturally created shingle ridge, which separates the saline coastal lagoon from the open sea. The Anglesey Coastal Path will lead you past headlands like Trwyn Cemlyn and Cerrig Brith, offering dramatic land and seascapes. The area is also part of the Isle of Anglesey Area of Outstanding Natural Beauty.
Cemlyn Lake offers a dynamic environment year-round. Spring and summer (late April to August) are excellent for birdwatching, especially the tern colonies, though access to the top of the shingle ridge may be limited to protect nesting birds. Autumn provides beautiful coastal colours, and winter offers a chance to see various waterfowl and waders. Always be mindful of weather conditions, as the coastal environment can be exposed.
While specific parking details for Cemlyn Lake are not provided in the route data, areas within the Anglesey Heritage Coast typically have designated parking facilities for visitors accessing the coastal path and natural reserves. It's advisable to check local signage upon arrival or consult local tourism resources for the most up-to-date parking information.
The Anglesey Coastal Path, which many running routes around Cemlyn Lake follow, is generally accessible. However, public transport options directly to Cemlyn Lake might be limited. It's recommended to check local bus schedules for Anglesey or consider combining a run with other transport methods to reach the starting points of the trails.
The komoot community highly rates the running experience at Cemlyn Lake, with an average score of 5.0 stars from 5 reviews. Runners often praise the stunning coastal views, the unique natural environment including the shingle ridge and lagoon, and the variety of terrain offered by the Anglesey Coastal Path. The opportunity for wildlife spotting, especially the diverse birdlife, is also a significant highlight.
Yes, for experienced runners seeking a longer challenge, Cemlyn Lake offers routes like the Hidden Pebble Beach – The Harbour Dog-Friendly Café loop from Cemlyn Lagoon, which covers 8.9 miles (14.3 km). While the elevation gain is moderate, the varied coastal terrain, including sections of the shingle ridge, provides a good workout. There are over 24 moderate routes in the area, with some reaching up to 10 miles in length.
The unique environment of Cemlyn Lake supports specialized plant communities. Along the shingle ridge, you can spot maritime plants such as sea kale, sea campion, sea beet, and yellow horned poppy. Around the saline lagoon, saltmarsh plants like sea aster and sea purslane thrive, adding to the natural beauty of your run.


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