Olympic triathlons (standard distance) in UK in September 2026
Find olympic triathlons (standard distance) in UK in September 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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- Sun 6 Sep 2026
- £95-£120
Helvellyn Triathlon
Take on one of the UK’s toughest triathlons – a legendary Lake District challenge where brutal climbs, wild beauty and sheer determination define every mile.
- Chip timing
- Enter online
- Mountainous
- Age 17 & over
- 1.5 km lake swimming
- 59 km road cycling + 990 m ascent
- 15 km fell running + 931 m ascent
- Sun 6 Sep 2026
- £114.99-£141.99
Triathlon Y Bala | Standard Triathlon
Start with a water swim in beautiful Llyn Tegid against a mountain backdrop, then push through scenic bike and run routes on fully closed roads around Bala, North Wales, in this Standard Triathlon.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 17 & over
- 1500 km lake swimming
- 37 km road cycling + 1181 ft ascent
- 10 km road running + 255 ft ascent
- Sat 12 Sep 2026
- £65-£80
Sundowner Olympic Triathlon
The Sundowner Olympic Triathlon is back! Race as the sun sets in an unforgettable triathlon event at Allerthorpe Lakeland Park in Yorkshire which is now back on the race calendar.
- Chip timing
- Enter online
- Flat
- Age 18 & over
- 1500 km lake swimming
- 40 km road cycling + 146 ft ascent
- 10 km trail running
- Sun 13 Sep 2026
- £93-£108
Aviemore Triathlon | Long Hard Durty
Join the Aviemore Triathlon in the beautiful Cairgorms and enjoy an open water swim in the cool, calm waters of Loch Morlich and enjoy mountain biking and running on the trails of Glenmore Forest.
- Chip timing
- Enter online
- Hilly
- Age 15 & over
- 1000 m lake swimming
- 18 km mountain biking
- 9 km trail running
- Sun 20 Sep 2026
- £82-£97
Eton Dorney Standard Triathlon
The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for Standard-distance triathletes to enjoy in an exclusive setting.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 17 & over
- 1.5 km lake swimming
- 40 km road cycling + 80 m ascent
- 10 km trail running + 14 m ascent
- Sun 20 Sep 2026
- £96-£115
ATW St Neots Standard Triathlon | Race 3
Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a Standard Triathlon.
- Chip timing
- Enter online
- Age 17 & over
- 1500 m river swimming
- 45 km road cycling + 712 ft ascent
- 10 km road running
- Sat 26 Sep 2026
- £97-£118
ATW Grafham Triathlon | Standard Triathlon
Athletes of all levels are guaranteed to enjoy The Standard Triathlon at this fantastic venue that has been used for award-winning triathlons, national championships and GB qualifier races!
- Chip timing
- Enter online
- Age 17 & over
- 1500 m lake swimming
- 38 km road cycling + 748 ft ascent
- 10 km road running
- Sat 26 Sep 2026
- £99-£120
Dorney Triathlon | September | Standard Triathlon
Take on this Standard Triathlon and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 17 & over
- 1500 m lake swimming
- 38 km road cycling
- 10 km road running