- Sat 10 - Sun 11 Jun
- £30-£144
Eastbourne Triathlon
Experience the beauty of the South Downs coast. Swim against the backdrop of Eastbourne's historic pier, cycle on fully closed roads over the famous Beachy Head Road and run along the iconic seaside.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sea swim
- Sprint aquathlon
- Standard aquathlon
- Sprint duathlon
- Standard duathlon
- Relay triathlon
- Kids triathlon 5
- Sun 9 Jul
- £180-£390
IronBourne Long Distance Triathlon
Full and middle distance triathlons on the Sunshine Coast where athletes of all abilities can experience the beauty of the South Downs, starting with a spectacular jump from the historic pier!
- Ironman
- Half Ironman
- Long aquabike
- Middle aquabike
- Sea swim
- Marathon
- Sun 10 Sep
- £30-£155
Brighton and Hove Triathlon
Take on the fast and flat traffic-free route from Hove Lawns along the famous seafront promenade! Well established as one of the biggest events in the triathlon calendar plus children's triathlons.
- Super sprint triathlon 2
- Sprint triathlon
- Olympic triathlon
- Sea swim
- Sprint aquathlon
- Standard aquathlon
- Kids triathlon 4
- Sat 10 Jun
- £70-£105
Dorney Triathlon
Take on a Sprint or Standard distance triathlon around Dorney Lake in 2023 and take the opportunity to race around this unique and inspiring Olympic venue!
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sun 11 Jun
- £95-£105
Royal Windsor Triathlon
The Royal Windsor Triathlon is one of UK's most legendary triathlons.
- Sprint triathlon
- Olympic triathlon
- Sun 11 Jun
- £42-£59
White Oak Triathlon
The White Oak Triathlon is one of the oldest Triathlon events in England.
- Sprint triathlon
- Olympic triathlon
- Sun 11 Jun
- £29-£48
Mid Sussex
The Mid Sussex Triathlon is a labour of love, run by the enthusiasts at the Mid Sussex Triathlon Club.
- Novice triathlon
- Super sprint triathlon
- Super sprint aquabike
- Sun 11 Jun
- FREE
World's 1st FreeTri Series - Walton
Triathlon, isn't that a sport for olympians that requires super human fitness and expensive gear?
- Kids triathlon 2
- Novice triathlon
- Super sprint triathlon
- Sun 11 Jun
- £45-£60
White Cliffs
The Event is a sprint triathlon with a swim of 400m a 14K bike ride and a 5K run.
- Kids aquathlon 4
- Sprint triathlon
- Sun 11 Jun
- £80-£200
The Swashbuckler Triathlon
The start, transition and finish are all based in the historic Bucklers's Hard, a hamlet on the banks of Beaulieu River famous for its shipbuilding.
- Standard aquabike
- Olympic triathlon
- Half Ironman
- Sun 18 Jun
- £30
Beachborough & Brackley Triathlon
Beachborough & Brackley Triathlon Club are delighted to be running the Beachborough & Brackley Triathlon at Stowe School in 2023.
- Kids triathlon 5
- Sun 18 Jun
- £40-£80
The 14th Dartford Bridge
The Dartford Bridge Triathlon will now be part of the London Series as well as the South East Series.
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Novice triathlon
- Sprint triathlon
- Fri 23 - Sun 25 Jun
- £50
SportInspired Thames200
The epic Thames200 is back! It's a team triathlon designed for a range of sporting abilities including both recreational and committed athletes alike. Over 12 hours teams will complete a 200km course!
- Novice triathlon 3
- Sun 25 Jun
- £55-£95
Eton Dorney Triathlon - June
The Olympic venue, Eton Dorney, offers pan flat, traffic-free roads, and a beautiful clear lake.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Fri 30 Jun
- £80
JLL Property
JLL Property Triathlon 2023 will be the 16th year of the event and it has so far raised over £2 million for charity.
- Sprint triathlon
- Sprint duathlon
- Lake swim
- Sat 1 Jul
- £39.99-£111
Banana Triathlon
The Banana Triathlon is in the middle of our three event series, welcoming triathletes to Dorney Lake every summer.
- Kids triathlon
- Novice triathlon 2
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Relay triathlon
- Sprint duathlon
- Kids duathlon
- Sun 2 Jul
- £25-£44
Ocean Lake Triathlon Sprint Triathlon 2
This is a beautiful open water race series of 2 events suitable for novices, age group and elite athletes looking for 400m, 750m distances to practice.
- Novice triathlon
- Sprint triathlon
- Wed 5 Jul
- £49-£76
Dorney Evening Triathlon
Take on a Sprint or Super Sprint distance triathlon around Dorney Lake in 2023 and take the opportunity to race around this unique and inspiring Olympic venue!
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sun 9 Jul
- FREE
World's 1st FreeTri Series - Walton
Triathlon, isn't that a sport for olympians that requires super human fitness and expensive gear?
- Kids triathlon 2
- Novice triathlon
- Super sprint triathlon
- Sun 9 Jul
- £65-£125
The One on The River - Summer Edition
The One on The River takes place across the scenic Thames Valley area.
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Sprint aquabike
- Standard aquabike
- Middle aquabike
- River swim 3
- Sun 9 Jul
- £50-£56
Guildford
Take on a Sprint triathlon or Aquathlon around Guildford in 2023 and take the opportunity to race around this unique venue!
- Kids aquathlon 4
- Sprint triathlon
- Sun 16 Jul
- £21-£27
The KidstriUK Billingshurst Triathlon
Welcome to the award-winning KidstriUK Billingshurst Triathlon which is an encouraging way for young people to try the sport out for the first time!
- Novice triathlon 2
- Kids triathlon 5
- Kids duathlon 2
- Sun 16 Jul
- £70-£105
Dorney Triathlon
Take on a Sprint or Standard distance triathlon around Dorney Lake in 2023 and take the opportunity to race around this unique and inspiring Olympic venue!
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sat 22 Jul
- £30-£35
UK Kids Fun Triathlon Henley-on-Thames
The Henley UK Kids Fun Triathlon is now in its 11th year and held within the grounds of Henley Leisure Centre & Gillotts School,
- Kids triathlon 9
- Sun 23 Jul
- £70-£89
Henley Triathlon
Join UK Triathlon for the 14th year of this popular event taking place at Henley Leisure Centre and within the grounds of Gillotts School.
- Novice triathlon 2
- Super sprint triathlon
- Sprint triathlon
- Wed 2 Aug
- £49-£76
Dorney Evening Triathlon
Take on a Sprint or Super Sprint distance triathlon around Dorney Lake in 2023 and take the opportunity to race around this unique and inspiring Olympic venue!
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sun 6 Aug
- £60-£145
Cowman Triathlon & Aquabike
BCS Events are delighted to be back in 2023 for the Cowman, Calfman and Stampede Triathlon and Aquabike events at the stunning venue of Emberton Country Park.
- Sprint aquabike
- Sprint triathlon
- Standard aquabike
- Olympic triathlon
- Middle aquabike
- Half Ironman
- Sun 6 Aug
- £52.50-£145
Cowman Triathlon 2023
BCS Events is delighted to be back in 2023 for the Cowman, Calfman and Stampede Triathlon and Aquabike events at the stunning venue of Emberton Country Park.
- Sprint aquabike 2
- Middle aquabike
- Sprint triathlon 2
- Half Ironman
- Sun 6 Aug
- £70-£105
Dorney Triathlon
Take on a Sprint or Standard distance triathlon around Dorney Lake in 2023 and take the opportunity to race around this unique and inspiring Olympic venue!
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sun 6 Aug
- £51-£90
Bewl Triathlon
Bewl Water Triathlon offers a Sprint or Standard distance triathlon.
- Sprint triathlon
- Olympic triathlon
- Sat 12 Aug
- £50
Superhero Series
Fly solo or get your family & friends together for one of three super-flexible, super-fun tri distances!
- Novice triathlon
- Super sprint triathlon
- Sprint triathlon
- Sat 19 Aug
- £20-£25
Steyning Kids Triathlon
Now in it’s 9th year, the Steyning Kids’ Triathlon takes place in the delightful market town of Steyning, West Sussex.
- Kids triathlon 5
- Novice triathlon 2
- Sun 27 Aug
- £70-£105
Dorney Triathlon
Take on a Sprint or Standard distance triathlon around Dorney Lake in 2023 and take the opportunity to race around this unique and inspiring Olympic venue!
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sun 3 Sep
- £60-£123
Reading Triathlon
Celebrating 40 Years of Triathlon in the UK
- Sprint aquathlon
- Standard aquabike
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Sun 3 Sep
- £66-£179
New Forest Middle Distance Triathlon
A stunning Triathlon with a swim in the beautiful Ellingham Waterski Lake, bike through the gorgeous New Forest with its wild ponies and horses finishing with a typically New Forest run...
- Sprint duathlon
- Standard aquabike
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Sun 10 Sep
- £60-£90
The 1066 Triathlon
First Stride Events is Thrilled to be bringing Triathlon to the 1066 coastline.
- Sprint aquabike
- Sprint triathlon
- Standard aquabike
- Olympic triathlon
- Middle aquabike
- Half Ironman
- Sun 10 Sep
- £21-£27
The KidstriUK Bognor Regis Triathlon
Welcome to Award winning KidstriUK Bognor Triathlon.
- Novice triathlon 2
- Kids triathlon 5
- Kids duathlon 2
- Sat 16 Sep
- £126-£360
Impetus Private Equity Triathlon
Held in 2023, the Impetus Private Equity Triathlon is one of the highlights of the Private Equity Calendar and a fun day out for all the family to enjoy.
- Sprint triathlon 2
- Olympic triathlon
- Sprint duathlon
- Sun 17 Sep
- FREE
World's 1st FreeTri Series - Walton
Triathlon, isn't that a sport for olympians that requires super human fitness and expensive gear?
- Kids triathlon 2
- Novice triathlon
- Super sprint triathlon
- Sun 17 Sep
- £45-£70
NISV Triathlon
Indoor pool Sprint & Olympic distance Triathlon in South Wales. Great event for beginners or for more experienced athletes.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sun 17 Sep
- £39.95-£111
Season Finale Triathlon
A range of triathlon distances to suit all ages and abilities. A flat course making use of the superb facilities at the Olympic 2012 venue, with chip timing and a superb medal at the finish.
- Kids duathlon
- Kids triathlon
- Novice triathlon 2
- Sprint triathlon
- Olympic triathlon
- Sprint duathlon
- Sun 17 Sep
- £42-£72
Woking Triathlon - Autumn
Now a regular fixture of the local triathlon scene Woking Triathlon has become a popular race with athletes coming back year after year.
- Kids aquathlon 4
- Sprint aquathlon
- Super sprint triathlon
- Sprint triathlon
- Sat 23 - Sun 24 Sep
- £30-£250.97
Hever Castle Triathlon and Multisport Festival
The spectacular Hever Castle plays host to an action packed weekend of high energy multi sport events including triathlon, duathlon, aquabike, aquathlon, swim and run races for all ages and abilities.
- Sprint triathlon 3
- Super sprint triathlon
- Novice triathlon
- Kids triathlon 4
- Standard duathlon
- Sprint duathlon
- Standard aquabike
- Sprint aquabike
- Olympic triathlon 2
- Lake swim 3
- Marathon
- Half marathon
- 10K run
- Half Ironman
- Sun 24 Sep
- £55-£95
Eton Dorney Triathlons
The Olympic venue, Eton Dorney, offers pan flat, traffic-free roads, and a beautiful clear lake.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sun 24 Sep
- £40-£55
Holly Hill Triathlon
Holly Hill boasts a new multi million pound leisure complex with a gorgeous 25m pool. The bike route is around the local roads around Lock's Heath and the run route is on quiet paths.
- Super sprint triathlon
- Sprint triathlon
- Sun 1 Oct
- £66
Thruxton Mass Attack Duathlon
Thruxton Mass Attack will again host the 2024 Great British Duathlon Age Group Qualifiers. Please do enter early as this event will be a sell out.
- Sprint duathlon
- Standard duathlon
- Sat 24 Jun
- £6-£10
GO TRI Herne Bay - June
GO TRI is an initiative launched by Triathlon England to provide people with the opportunity to take part in multisport event regularly and at a minimal cost.
- Novice triathlon
- Sun 25 Jun
- £90.10-£238.50
- Cancelled
Outlaw Half Woburn
Race a triathlon in the grounds of a Duke's family home, next to manicured gardens and through thousands of acres of deer park, although you'll stay clear of the safari park!
- Half Ironman
- Sun 2 Jul
- £55-£80
The Oxfordshire Triathlon Series - July
The Oxfordshire Triathlon Series for 2023 will consist of 2 races spread across the summer, July and August.
- Olympic triathlon
- Sun 2 Jul
- £65-£71
Thorpe Park Sprint Triathlon
Join RunThrough Events for the Brand New Thorpe Park Sprint Triathlon in 2023
- Sprint triathlon
- Sat 8 Jul
- £60
FixAddiction Triathlon
Get involved in this superb summer triathlon. Enjoy a great day out and make sure you bring your sunscreen!
- Super sprint triathlon
- Sun 9 Jul
- £360
IronBourne Long Distance Triathlon | Long Distance Triathlon
Experience the beauty of the South Downs with a full or middle distance triathlon on the Sunshine Coast.
- 2.4 miles pool swimming
- 112 miles road cycling
- 26.2 miles road running
- Sun 9 Jul
- £180
IronBourne Long Distance Triathlon | Middle Distance Triathlon
Experience the beauty of the South Downs with a full or middle distance triathlon on the Sunshine Coast.
- 1.2 miles pool swimming
- 56 miles road cycling
- 13.1 miles road running
- Sun 9 Jul
- £390
IronBourne Long Distance Triathlon | Full Distance Triathlon Relay
Experience the beauty of the South Downs with a full or middle distance triathlon on the Sunshine Coast.
- 2.4 miles pool swimming
- 112 miles road cycling
- 26.2 miles road running
- Sun 9 Jul
- £230
IronBourne Long Distance Triathlon | Middle Distance Triathlon Relay
Experience the beauty of the South Downs with a full or middle distance triathlon on the Sunshine Coast.
- 1.2 miles pool swimming
- 56 miles road cycling
- 13.1 miles road running
- Sun 9 Jul
- £50-£75
Active Life Oysterman Triathlon
This is a very unique sprint distance event consisting of a 500m sea swim followed by a 20km cycle and finishing with a stunning yet flat 5km coastal run.
- Sprint triathlon
- Sat 22 Jul
- £195-£235
Castle to Coast Triathlon
An Epic Point To Point Adventure
- Half Ironman
- Wed 2 Aug
- £22.95
GO TRI Reading at Green Park - Triathlon
August event is a mid-week early evening triathlon, starting with an open water swim in the beautiful Green Park Lake, which runs alongside the concurrent annual Green Park Swim...
- Novice triathlon
- Sun 20 Aug
- £55-£80
The Oxfordshire Triathlon Series - August
The Oxfordshire Triathlon Series for 2023 will consist of 2 races spread across the summer, July and August.
- Olympic triathlon
- Sat 9 Sep
- £20-£45
TRI Challenge Triathlon
Get involved in this September TRI Challenge. Enter the individual triathlon or get a team together!
- Super sprint triathlon