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April 30, 2019
Cycling

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Nearby routes
Best routes near Bwlch y Groes Pass

4.6
(18)
219
riders
Embark on a challenging touring bicycle loop from Llyn Efyrnwy / Lake Vyrnwy to Llyn Tegid / Bala Lake, traversing the high passes of Eryri / Snowdonia National Park. This difficult route spans 34.4 miles (55.4 km) and features a substantial elevation gain of 3059 feet (932 metres), requiring very good fitness and typically taking around 3 hours and 45 minutes to complete. You will cycle through dense woodlands, open moorland, and past the expansive reservoir of Lake Vyrnwy, experiencing a landscape of mountains, valleys, and tranquil countryside.
While largely on paved surfaces, be prepared for some unpaved sections where you might need to push your bike. The route includes demanding climbs into the surrounding hills, notably the Hirnant Pass and Bwlch y Groes, which is the highest road pass in Wales. Expect very steep roads and descents, especially near Lake Vyrnwy and Rhiwargor. This loop is best enjoyed during daylight hours when the weather is clear, allowing you to fully appreciate the panoramic views across the Welsh landscape.
This trail is notable for connecting two iconic Welsh lakes via a high mountain pass, offering a true sense of frontier wildness and raw natural beauty. Bwlch y Groes, reaching 1800 feet (546 metres), is not only a challenging climb but also historically significant as a pilgrim route. You will also pass the impressive dam and distinctive straining tower of Lake Vyrnwy, and experience the charming, Welsh-speaking town of Bala by Llyn Tegid, Wales's largest natural lake.

20
riders
65.9km
04:26
1,090m
1,090m
Embark on the Bala and Lake Vyrnwy Loop via Bwlch y Groes, a challenging touring cycling route that takes you through the heart of Eryri / Snowdonia National Park. This 40.9-mile (65.9 km) journey features diverse Welsh landscapes, from serene lake shores to rugged mountain passes. You will experience significant climbing, with a total elevation gain of 3583 feet (1092 metres), offering expansive views of the Arenig and Aran mountains, particularly as you tackle the demanding Bwlch y Groes Pass.
Planning your ride requires good preparation, as this is a difficult route estimated to take around 4 hours and 25 minutes. The trail demands very good fitness due to its strenuous climbs, especially the steep sections of Bwlch y Groes. While primarily on paved roads, be aware that some parts might be unpaved and could present additional challenges. You can find convenient parking in Bala, which serves as an ideal starting point for this adventure.
This loop offers a deep dive into the natural beauty of Wales, circling Llyn Tegid, the country's largest natural lake, and providing an almost complete circuit of Lake Vyrnwy, known for its varied woods and pastures. The route showcases the dramatic contrasts of the region, from tranquil waters to the wild, open moorland, making it a memorable touring cycling experience for those seeking a true test of endurance and a connection with the Welsh countryside.

6
riders
58.1km
04:07
1,000m
1,000m
This difficult 36.1-mile touring cycling loop around Llyn Efyrnwy / Lake Vyrnwy offers panoramic views and 3277 feet of elevation gain.
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Friday 8 May
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