Epic racing in the heart of Eryri
![Slateman Bike Course](/imager/images/Slateman/554081/7acf48ce-3304-408a-a495-25039a7d19ce_3711eab92926eb9edb3d392d1d49a849.jpeg)
Events / Triathlon / Duathlon
Slateman Triathlon & Duathlon 2025
The Slateman Triathlon & Duathlon is the most iconic multi sport adventure race in Wales. Starting in Llanberis; the heart of Eryri (Snowdonia)’s industrial heritage, this is an unparalleled race which combines stunning scenery with epic challenges. 220 Tri Magazine has listed the Slateman amongst the world's best triathlons.
Now staged in June, the warmer water temperatures and a party atmosphere all surrounded by stunning scenery will make this an event not to be missed from any athlete's calendar.
Are you up for the trio? The Slateman is also the first part of our Adventure Series of triathlons & duathlons.
Dates
08 Jun 2025
Location
Llanberis
Choose your distance
Slateman 2025
Sprint
08 Jun 2025
Swim: 750 Metres
Bike: 20Km
Run: 5.8Km
![Female Rider using TT Bars at Slateman](/imager/images/Slateman/554078/0d383b01-c40d-4d60-891e-522849ddcfe0_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Slateman/554078/0d383b01-c40d-4d60-891e-522849ddcfe0_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Slateman/554078/0d383b01-c40d-4d60-891e-522849ddcfe0_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Slateman 2025
Standard
08 Jun 2025
Swim: 1500m
Bike: 49.9km
Run: 11.9km
![Female cycle rider at Slateman Triathlon](/imager/images/Slateman/554085/fa5e553a-352c-4d2d-824d-f49b5697c1aa_7ca9c0ba53d792c765c778bcc131466b.jpeg 320w, /imager/images/Slateman/554085/fa5e553a-352c-4d2d-824d-f49b5697c1aa_af244a64ae1a424ed0b12672ffd27330.jpeg 640w, /imager/images/Slateman/554085/fa5e553a-352c-4d2d-824d-f49b5697c1aa_120d6d06a6da7dcdff4070c1dbe7c639.jpeg 960w)
Slateman 2025
Slateman Legend (70.3)
08 Jun 2025
Swim: 1,900 Metres
Bike: 89.9Km
Run: 23.1Km
![Slateman 2016 sprint bike 256](/imager/images/Slateman/18057/slateman_2016_sprint_bike_256_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Slateman/18057/slateman_2016_sprint_bike_256_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Slateman/18057/slateman_2016_sprint_bike_256_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Slateman 2025
Standard Duathlon
08 Jun 2025
Run 1: 5.8km
Bike: 49.9km
Run 2: 11.5km
What's Included
![The event village for the XTERRA Snowdonia Trail Marathon in Llanberis, Wales](/imager/images/STM/354237/XTERRA_Snowdonia_TMS_2022_Sunday_14_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/STM/354237/XTERRA_Snowdonia_TMS_2022_Sunday_14_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/STM/354237/XTERRA_Snowdonia_TMS_2022_Sunday_14_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Lively Event Village
Music, commentary, shopping, food and chill out zones.
![Family friendly vibes at Slateman Traithlon](/imager/images/Slateman/17276/18556541_1368893426530445_8246903844963313029_o_41d79117d895d9e5fd5cd10bd7f47f6c.jpeg 320w, /imager/images/Slateman/17276/18556541_1368893426530445_8246903844963313029_o_53dc6996542781e712b71e728ea0e2bc.jpeg 640w, /imager/images/Slateman/17276/18556541_1368893426530445_8246903844963313029_o_b6f29f47aed263ab21d3829358c720f8.jpeg 960w)
Family Friendly Vibes
Family finishes and plenty to see and do.
![Marshal wearing an orange high vis jacket](/imager/images/Anglesey-Trail-Half-Marathon/16762/IMG_7262_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Anglesey-Trail-Half-Marathon/16762/IMG_7262_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Anglesey-Trail-Half-Marathon/16762/IMG_7262_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
On Course Support
Brilliant marshals, signage and pick up vehicles
![Slateman Slate Mockup](/imager/images/Mementos/657671/Slateman-Slate-Mockup_2690b948f554ce8c918fb00a6ad4f50a.jpeg 320w, /imager/images/Mementos/657671/Slateman-Slate-Mockup_1ce6dcb068d9941ff00b5785394294b5.jpeg 640w, /imager/images/Mementos/657671/Slateman-Slate-Mockup_876d92b1554c3ec8269e4c9bc06fcd15.jpeg 960w)
Unique Finisher Mementos
Beautifully designed to reflect our event locations and local history.
![Slateman Llanberis Pass Bike Rider](/imager/images/Slateman/654697/7069180a-e092-4974-b5d3-0ff7b41789df_561b3b425f797e63f1f9d7ea21be2a9e.jpeg 320w, /imager/images/Slateman/654697/7069180a-e092-4974-b5d3-0ff7b41789df_f5ef5b2a09f838f9e274fc8d87007c44.jpeg 640w, /imager/images/Slateman/654697/7069180a-e092-4974-b5d3-0ff7b41789df_563ea381c73ac703a2446b5d78f99a20.jpeg 960w)
Spectacular Scenery
Eryri's awe-inspiring scenery is the backdrop to your race
![Winner at the Slateman Triathlon](/imager/images/Slateman/554082/88b76007-c3ee-4ecd-b4e0-856985e42ff2_e4e3c43654311389b97f484a487e158f.jpeg 320w, /imager/images/Slateman/554082/88b76007-c3ee-4ecd-b4e0-856985e42ff2_fce85340caa4ca966428d2e46f8aa07f.jpeg 640w, /imager/images/Slateman/554082/88b76007-c3ee-4ecd-b4e0-856985e42ff2_24dd2b03969152f685b39c37abdfed74.jpeg 960w)
Professional Timing
Chip timing & live online results
![Promo banner](/imager/images/2571/promo-banner_fa3d3caafbf61fd4ce8e294f96f8f41a.jpeg)
"As always a fantastic event, amazing marshals thank you to each & every one of you for an amazing job. I had the best weekend & all the competitors on course, or in transition were just so lovely & supportive Just the best race in the calendar. Thank you, everyone"
2022 Participant
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)
Slateman Triathlon & Duathlon 2025
FAQs
![Slateman AT Royal Victoria](/imager/images/Slateman/37866/SlatemanAT_RoyalVictoria_6981c974322621d3404e73aa26da56dc.jpeg 100w, /imager/images/Slateman/37866/SlatemanAT_RoyalVictoria_408aa2c41fdab63d3ec2be4594d8f498.jpeg 200w)
Slateman Triathlon & Duathlon 2025
Travel & Accommodation
![Drone Run](/imager/images/Slateman/7754/Drone-Run_6981c974322621d3404e73aa26da56dc.jpeg 100w, /imager/images/Slateman/7754/Drone-Run_408aa2c41fdab63d3ec2be4594d8f498.jpeg 200w)
Slateman Triathlon & Duathlon 2025
Info for Locals
![IMG 3790](/imager/images/Sandman/7473/IMG_3790_6981c974322621d3404e73aa26da56dc.jpeg 100w, /imager/images/Sandman/7473/IMG_3790_408aa2c41fdab63d3ec2be4594d8f498.jpeg 200w)
Slateman Triathlon & Duathlon 2025
Volunteer
![Trail running in Snowdonia](/imager/images/Slateman/439916/46937d51-c049-405c-a83a-049efaff44d6_6981c974322621d3404e73aa26da56dc.jpeg 100w, /imager/images/Slateman/439916/46937d51-c049-405c-a83a-049efaff44d6_408aa2c41fdab63d3ec2be4594d8f498.jpeg 200w)
Slateman Triathlon & Duathlon 2025
Gallery
![DSC 0925 Edit](/imager/images/Slateman/7758/DSC_0925-Edit_6981c974322621d3404e73aa26da56dc.jpeg 100w, /imager/images/Slateman/7758/DSC_0925-Edit_408aa2c41fdab63d3ec2be4594d8f498.jpeg 200w)
Slateman Triathlon & Duathlon 2025
Race Reports
Other Events
![A Dventure Series Logo Square](/imager/images/Event-logos/704023/ADventure_Series_Logo_Square_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/704023/ADventure_Series_Logo_Square_41c6c337f68f180993bf6532b7433687.jpeg 200w)
09 Jun - 15 Sep 2024
Adventure Series Triathlon 2024
![A Dventure Series Logo Square](/imager/images/Event-logos/704023/ADventure_Series_Logo_Square_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/704023/ADventure_Series_Logo_Square_41c6c337f68f180993bf6532b7433687.jpeg 200w)
09 Jun - 15 Sep 2024
Adventure Series Duathlon 2024
![Cardiff Triathlon Duathlon Logo Square](/imager/images/Event-logos/336289/Cardiff-Triathlon-Duathlon-Logo-Square_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/336289/Cardiff-Triathlon-Duathlon-Logo-Square_41c6c337f68f180993bf6532b7433687.jpeg 200w)
22 Jun 2025
Cardiff Triathlon & Duathlon 2025
![AAH Snowman Colour](/imager/images/Event-logos/358627/AAH-Snowman-Colour_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/358627/AAH-Snowman-Colour_41c6c337f68f180993bf6532b7433687.jpeg 200w)
04 Aug 2024
Craft Snowman Triathlon 2024
![AAH Snowman Colour](/imager/images/Event-logos/358627/AAH-Snowman-Colour_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/358627/AAH-Snowman-Colour_41c6c337f68f180993bf6532b7433687.jpeg 200w)
04 Aug 2024
Craft Snowman Duathlon 2024
![Triathlon y Bala Triathlon Logo](/imager/images/Event-logos/661624/AAH-BalaTri-vF-White-02-02-01_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/661624/AAH-BalaTri-vF-White-02-02-01_41c6c337f68f180993bf6532b7433687.jpeg 200w)
01 Sep 2024
Cycle Retreats Triathlon y Bala
![Sandman Logo Colour](/imager/images/Event-logos/421556/Sandman-Logo-Colour_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/421556/Sandman-Logo-Colour_41c6c337f68f180993bf6532b7433687.jpeg 200w)
14 Sep - 15 Sep 2024
Superfeet Sandman Triathlon 2024
![Sandman Logo Colour](/imager/images/Event-logos/421556/Sandman-Logo-Colour_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/421556/Sandman-Logo-Colour_41c6c337f68f180993bf6532b7433687.jpeg 200w)
14 Sep - 15 Sep 2024
Superfeet Sandman Duathlon 2024
![Etch Rock Logo Llandudno Triathlon](/imager/images/Event-logos/259897/EtchRock-Logo_Llandudno-Triathlon_99121e901eed282fdafd088d93cbbd14.jpeg 100w, /imager/images/Event-logos/259897/EtchRock-Logo_Llandudno-Triathlon_41c6c337f68f180993bf6532b7433687.jpeg 200w)
29 Sep 2024
Llandudno Triathlon 2024
We are proud that all our events are bilingual. Signs, registration and commentary are available in English and Welsh.
Event Partners
Working with local communities
Looking after our environment
Find out more about Looking after our environmentTees for Trees
Find out more about Tees for Trees