18Sep
The Seriously Brutal Duathlon Bach (Standard)
Multisports
- Distance
- 10K Run 40K Bike 5K Run
- Countdown
- 320 days
- Entry fee
- £81.00
The Seriously Brutal Duathlons 2027
Llanberis,
Wales,
United Kingdom
320 days left
my.raceresult.com
Date
18 Sep, 2027
Races
6 distances
Entry fee
£81.00 – £306.00
Runner rating
Be the first to rate
Website
Official website
The Seriously Brutal Duathlons 2027
About the event
The Seriously Brutal Duathlons 2027 returns on September 18, 2027, to Llanberis, offering three distinct distances: the Standard (10K Run, 40K Bike, 5K Run), Half, and Full. Both individual and relay options are available for each distance, making it a versatile event for duathlon enthusiasts of all levels.
Participants can choose between solo challenges or team up in relays to tackle this grueling course set against the backdrop of Llanberis.
Participants can choose between solo challenges or team up in relays to tackle this grueling course set against the backdrop of Llanberis.
Races offered
18Sep
The Seriously Brutal Duathlon Bach (Standard) - RELAY
Multisports
- Distance
- 10K Run 40K Bike 5K Run
- Countdown
- 320 days
- Entry fee
- £121.50
18Sep
The Seriously Brutal Duathlon Canol (Half)
Multisports
- Distance
- The Seriously Brutal Duathlon Canol (Half)
- Countdown
- 320 days
- Entry fee
- £153.00
18Sep
The Seriously Brutal Duathlon Canol (Half) - RELAY
Multisports
- Distance
- The Seriously Brutal Duathlon Canol (Half) - RELAY
- Countdown
- 320 days
- Entry fee
- £193.50
18Sep
The Seriously Brutal Duathlon Mawr (Full)
Multisports
- Distance
- The Seriously Brutal Duathlon Mawr (Full)
- Countdown
- 320 days
- Entry fee
- £264.50
18Sep
The Seriously Brutal Duathlon Mawr (Full) - RELAY
Multisports
- Distance
- The Seriously Brutal Duathlon Mawr (Full) - RELAY
- Countdown
- 320 days
- Entry fee
- £306.00
Weather history
3-year monthly averages for September in Llanberis.
Temperature11.3° / 16.8°
Feels like8.7° / 14.6°
Sunshine hours7h 14m
Rainfall6.5 mm
Snowfall—
Wind14.8 km/h (Gentle breeze)
Humidity86.2%
Max UV indexModerate (3.5)
Sweat lossLow
Course conditionsFirm and slightly soft
Sunrise06:50
Sunset19:29
About Llanberis
Learn more about the host city, Llanberis.
Llanberis is in North Wales, 7 miles away from Caernarfon. It is the 'base camp' for Mount Snowdon.
Read moreHotels & places to stay
Things to do nearby
Tours and activities near Llanberis, powered by Viator.
Runner reviews
Read what other athletes have to say about their experience at the The Seriously Brutal Duathlons 2027.
No reviews yet
Be the first to share your experience with the community!
Suggest an edit
Spotted an error or missing detail about the The Seriously Brutal Duathlons 2027? Help us improve.
Nearby races
Explore other exciting events happening in this same region.
-
Nov 15, 2026
-
Nov 14, 2026
-
Nov 14, 2026
-
Nov 18, 2026
-
Nov 21, 2026
-
Nov 21, 2026
-
Nov 07, 2026
-
Nov 15, 2026
Recommended for you
Hand-picked events we think you’ll love.
-
Nov 21, 2026
Turkey Trails - Greater Atlanta
Join us for the annual Turkey Trails 5k/10k! A fun, Thanksgiving-themed event that is perfect for the whole family. The…
Read more about Turkey Trails - Greater Atlanta -
Nov 26, 2026
2026 UNIVERSITY CITY TURKEY TROT
Join us on Thanksgiving Day at 8AM for the 13th annual University City Turkey Trot!! A huge thanks to all the participa…
Read more about 2026 UNIVERSITY CITY TURKEY TROT -
Apr 25, 2027
2027 Double TCS London Marathon
Step into the heart of London on Sunday, April 25, 2027, for an unforgettable journey at the TCS London Marathon. This …
Read more about 2027 Double TCS London Marathon -
Apr 28, 2027
AIR Miles for Audio Creators: Run. Walk. Advocate
AIR Miles for Audio Creators is powered by the Association of Independents in Radio (AIR). This virtual challenge is ho…
Read more about AIR Miles for Audio Creators: Run. Walk. Advocate -
Jun 19, 2027
The Metropolitan 5k
Race Website: For more information on The Metropolitan 5k Race, visit our website: http://www.metro5k.org Location: 199…
Read more about The Metropolitan 5k -
Sep 12, 2027
WALSH Triathlon
Congratulations to all finishers! FIND RESULTS 2026 HERE ________________________________________ Ready to discover wha…
Read more about WALSH Triathlon -
Nov 02, 2026
Swing Fore The Symphony Presented by The League of the Hilt…
Join us for an outstanding day of golf at the Wexford Golf Club where we will be playing in a scramble step a side tour…
Read more about Swing Fore The Symphony Presented by The League of the Hilton Head Symphony Orchestra -
Nov 03, 2026
Dawg Days of Summer (in Winter) Races
Dawg Days of Summer (in Winter) Races Clover Glove, Black Bag, Keel/ Ryles Holiday Races We again offer the bookend for…
Read more about Dawg Days of Summer (in Winter) Races