Moelwyn Mawr from Croesor trail running loop

This trail is rated as difficult for running and requires a very good level of fitness. Expect steep, tiring climbs, especially the final push to the summit of Moelwyn Mawr. The terrain is challenging and uneven, demanding sure-footedness.

The terrain is diverse and demanding. You'll encounter paved roads and bumpy dirt roads near Croesor, transitioning quickly to much rougher ground. This includes steep, rocky tracks, open moorland, and potentially boggy stretches after rain. Higher up, paths can be indistinct and craggy, with sections requiring non-exposed scrambling. The ascent to Moelwyn Mawr is particularly steep and unrelenting.

The loop starts from the village of Croesor. Parking is available in the village, though it can be limited, especially during peak times. Arriving early is advisable to secure a spot.

Yes, dogs are generally allowed on this trail. However, as parts of the route pass through open moorland and potentially near livestock, it's crucial to keep dogs under close control, preferably on a leash, to protect wildlife and farm animals.

Spring and autumn generally offer the most pleasant conditions with cooler temperatures and potentially clearer views. Summer can be good, but be prepared for warmer weather and potentially more people. Winter runs are possible for experienced trail runners but require appropriate gear for cold, wet, and potentially icy conditions, as well as good navigation skills due to shorter daylight hours and indistinct paths.

No, there are no specific permits or entrance fees required to access this trail or other public rights of way within Parc Cenedlaethol Eryri (Snowdonia National Park). However, please respect the local environment and follow the Countryside Code.

The loop offers sensational panoramic views. You'll see the Vale of Ffestiniog, the North Wales coastline, and the majestic Snowdon range. Prominent features include Cnicht (the 'Welsh Matterhorn'), the architecturally interesting Stwlan Dam and Llyn Stwlan reservoir, and glimpses of various Moelwyn lakes and a stunning waterfall. Don't miss the views from the Moelwyn Mawr summit and Moelwyn Bach.

Yes, the route incorporates sections of several other paths. You'll find yourself on parts of the Snowdonia Slate Trail, the Cambrian Way, and sections of the Former Croesor Tramway. These intersecting trails add to the historical and scenic interest of the loop.

This trail is rich in slate mining history. You'll pass through numerous abandoned slate quarries, complete with derelict buildings, enormous piles of slate, and even tunnels that delve into the mountainside. This industrial heritage provides a fascinating contrast to the natural beauty of the area.

Given the trail's difficulty and varied terrain, essential gear includes sturdy trail running shoes with good grip, appropriate layers of clothing for changing mountain weather, waterproofs, sufficient water and snacks, a map and compass (or GPS device) as paths can be indistinct, and a fully charged phone. A headlamp is also advisable if running near dawn or dusk.

Croesor is a small village with limited facilities. For pubs or cafes, you may need to venture to nearby larger villages or towns in the Snowdonia National Park area, such as Beddgelert or Porthmadog, which are a short drive away.