Merfyn (better known as ‘Smyrff’) is an experienced Summer and Winter Mountain Leader with a passion for sharing outdoor experiences in and around Eryri / Snowdonia and beyond whether on foot or by mountain bike.


A local boy from Penrhyndeudraeth, Smyrff is a first language Welsh speaker. He loves venturing further afield and exploring the mountains of the world and has completed overseas trips to Mont Blanc, Toubkal, Kilimanjaro, Mulhacén in Spain and Piz Boè in Italy.
As well as his hiking and biking work, you’ll often find Smyrff working on TV and radio projects. He recently completed the North Wales Pilgrim’s Way with Radio Cymru for Children in Need and regularly works on S4C’s walking programme, Am Dro.
Smyrff also runs his own outdoor business Hike & Bike Snowdonia / Heicio a Beicio Eryri. He runs lowland walks and mountain trips for local schools in North Wales and is fortunate to spend a lot of time in Scotland working on winter skills courses. Smyrff is an Eryri and Bannau Brycheiniog Ambassador. Keen to work with the next generation of mountaineers, Smyrff works on Mountain Leader Training and Assessments and is one of the few tutors who runs Welsh language courses.
Smyrff is a valued volunteer and long-term Mountain Rescue Team member with South Snowdonia Search & Rescue Team / Tîm Achub a Chwilio De Eryri.
What have MountainXperience clients said about Smyrff?
What an experience! The views were breathtaking and the company was lovely. Smyrff was very knowledgeable, kind and patient. Would highly recommend. And although I found it challenging it was definitely worth it.
Hayley M via Tripadvisor
The Grib Goch scramble with Smyrff and Simon was an unforgettable experience for me. It was challenging and breathtaking, and I found Smyrff’s guidance and down-to-earth attitude very helpful. I couldn’t have made it up Crib Goch without the route setting and scramble coaching, that’s for sure. I’d highly recommend MountainXperience and the two guides, Smyrff and Simon. Thanks again for a fantastic day!
Ioana A Tripadvisor
We had Keith and Smyrff take us to the summit of Snowdon last week – we had fabulous weather!! NOT – but they made it hugely enjoyable and memorable for our group of 11 trekkers! Excellent knowledge and very much took care of our well being. We all had a great time.
TrailGroupTrek via Tripadvisor
Smyrff was an amazing guide. He looked after everyone in the group by being attentive, informative and interested. He was very personable and had some great stories. He looked after us on our first climb and I would definitely recommend. Abi, Reece and doggy Luna x
Abi S via Tripadvisor
(These are just a handful of the genuine testimonials about Smyrff that we’ve received from happy customers. Thanks Smyrff for making MountainXperience the number one outdoor provider on Tripadvisor.)
Smyrff’s selfie gallery












