DEWCH I NOFIO YNG NGHALON ERYRI
![Snowman swim mountains boat](/imager/images/Snowman/10763/STF-7_3711eab92926eb9edb3d392d1d49a849.jpeg)
Events / Nofio
Nofio Llanc yr Eira 2025
Os ydych chi'n hoff o nofio dŵr agored, dyma eich cyfle i brofi ras nofio dŵr agored anhygoel yn y Llynnau Mymbyr syfrdanol, yng nghanol Parc Cenedlaethol Eryri.
Mae'r digwyddiad hon yn cael ei gynnal yn un o'r mannau mwyaf deniadol yn Eryri, gydag ystod yr Wyddfa yn adlewyrchu yn y dŵr, mae hon yn brofiad heb ei ail. Mae'r llyn oddeutu 3/4 milltir o hyd, gyda dyfnder o 30 troedfedd a delta hanner ffordd ar hyd lan y gogledd sy'n heintio'r llyn ac yn rhoi ei enw lluosog iddo.
Dewis Eich Pellter
Nofio Llanc yr Eira
1000m
02 Aug 2025
Nofio: 1000m
![Snowman Mike Low Res 141](/imager/images/Snowman/367843/Snowman-Mike-Low-Res-141_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Snowman/367843/Snowman-Mike-Low-Res-141_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Snowman/367843/Snowman-Mike-Low-Res-141_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Nofio Llanc yr Eira
2000m
02 Aug 2025
Nofio: 2000m
![Snowman Mike Low Res 143](/imager/images/Snowman/367926/Snowman-Mike-Low-Res-143_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Snowman/367926/Snowman-Mike-Low-Res-143_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Snowman/367926/Snowman-Mike-Low-Res-143_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Nofio Llanc yr Eira
2.4 milltir
02 Aug 2025
Nofio: 2.4 milltir
What's Included
![20180805 152055](/imager/images/Snowman/10787/20180805_152055_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Snowman/10787/20180805_152055_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Snowman/10787/20180805_152055_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Pentref Digwyddiad Bywiog
Cerddoriaeth, sylwebaeth, siopa, bwyd a pharthau ymlacio.
![IMG 2956](/imager/images/Snowman/10760/IMG_2956_aea69590aee7e2ebcc274cc0e4ff98e8.jpeg 320w, /imager/images/Snowman/10760/IMG_2956_850048c536acbe60c142bc7f98d57585.jpeg 640w, /imager/images/Snowman/10760/IMG_2956_ee88910d04492ffabc528f347d9d1224.jpeg 960w)
Addas i Bob Aelod o'r Teulu
Yn gyfeillgar i wylwyr a llawer i'w weld a'i wneud
![IMG 0373](/imager/images/Snowman/10761/IMG_0373_6369833e5ee3a519dd472a6ab2f4f6a8.jpeg 320w, /imager/images/Snowman/10761/IMG_0373_827ca892346c03b374f2b814437f4578.jpeg 640w, /imager/images/Snowman/10761/IMG_0373_898a0826dd06580e92143d08c3e4f494.jpeg 960w)
Llawer o Gymorth
Marsialiaid gwych, diogelwch a chychod achub dŵr
![Snowman Slate Mockup Current View](/imager/images/Mementos/178434/Snowman-Slate-Mockup-Current-View_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Mementos/178434/Snowman-Slate-Mockup-Current-View_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Mementos/178434/Snowman-Slate-Mockup-Current-View_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Cofrodd Gorffen Unigryw
Wedi'i ddylunio'n hyfryd i adlewyrchu lleoliadau ein digwyddiadau a hanes lleol.
![snowman swim lake view](/imager/images/Snowman/17893/IMG_2667_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Snowman/17893/IMG_2667_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Snowman/17893/IMG_2667_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Golygfeydd Syfrdanol
Golygfeydd ysblennydd, ysbrydoledig Eryri yw cefndir eich ras
![Snowman Swim start swimming](/imager/images/Snowman/11313/Swim-Start_a537be27da17c0771a229b348455f3d0.jpeg 320w, /imager/images/Snowman/11313/Swim-Start_72ecd7688afe9197431bfc2e942f6c99.jpeg 640w, /imager/images/Snowman/11313/Swim-Start_72d0ef55302adf020845b31873703a18.jpeg 960w)
Amseru Proffesiynol
Amseru 'chip'
Event Information
![Light Trapper Race Start](/imager/images/Slateman/7752/LightTrapper-Race-Start_6981c974322621d3404e73aa26da56dc.jpeg 100w, /imager/images/Slateman/7752/LightTrapper-Race-Start_408aa2c41fdab63d3ec2be4594d8f498.jpeg 200w)
Nofio Llanc yr Eira 2025
Cwestiynau Cyffredin (FAQs)
![Py B](/imager/images/Snowman/70353/PyB_4032b24fa5d8f695576b791c7824f69f.jpeg 100w, /imager/images/Snowman/70353/PyB_fe668c86640b4c79a60d980ccffd11a5.jpeg 200w)
Nofio Llanc yr Eira 2025
Teithio & Llety
![Snowman swim lake](/imager/images/Snowman/18512/Snowdonia_ac64e5cdddac99e92bd36b25724f9152.jpeg 100w, /imager/images/Snowman/18512/Snowdonia_4b31d30f0940889753cfccb7128e08ce.jpeg 200w)
Nofio Llanc yr Eira 2025
Gwybodaeth i Bobl Lleol
![IMG 3790](/imager/images/Sandman/7473/IMG_3790_6981c974322621d3404e73aa26da56dc.jpeg 100w, /imager/images/Sandman/7473/IMG_3790_408aa2c41fdab63d3ec2be4594d8f498.jpeg 200w)
Nofio Llanc yr Eira 2025
Gwirfoddoli
![Snowman swim warming up Aquasphere](/imager/images/Snowman/18470/0112_PreStart_8249_200522_112433_6981c974322621d3404e73aa26da56dc.jpeg 100w, /imager/images/Snowman/18470/0112_PreStart_8249_200522_112433_408aa2c41fdab63d3ec2be4594d8f498.jpeg 200w)
Nofio Llanc yr Eira 2025
Galeri
![Snowman Swim start swimming](/imager/images/Snowman/11313/Swim-Start_f43ab945e86d76f42328519a8fca91c3.jpeg 100w, /imager/images/Snowman/11313/Swim-Start_f4d860df4d120e0c378d4a60cc9ccb75.jpeg 200w)
Nofio Llanc yr Eira 2025
Adroddiadau Rasio
Digwyddiadau Cysylltiedig
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