Open Water Swimming at Merchant Taylors' School
19 Apr
Open Water Swimming at Merchant Taylors' School
Organised by: ATW
ATW Stevenage Spring Half Marathon & 10k
21 Apr
ATW Stevenage Spring Half Marathon & 10k
Organised by: ATW
Mallory Park - Swim, Bike, & Run Training
23 Apr
Mallory Park - Swim, Bike, & Run Training
Organised by: ATW
Woking Spring Triathlon & Junior Aquathlon
27 Apr
Woking Spring Triathlon & Junior Aquathlon
Organised by: ATW
ATW Mallory Race Circuit 50k/100k - incorporating the British and BMAF 50k/100k Championships
03 May
ATW Mallory Race Circuit 50k/100k - incorporating the British and BMAF 50k/100k Championships
Organised by: ATW
The Livingston Relays
03 May
The Livingston Relays
Organised by: ATW
British Masters Open Road Relay Championships and Festival of Endurance Running 3rd May 2025
03 May
British Masters Open Road Relay Championships and Festival of Endurance Running 3rd May 2025
Organised by: ATW
ATW Mallory Race Circuit 10 mile road race - incorporating the British Masters, English Masters and Road Runners Club 10 mile Championships
03 May
ATW Mallory Race Circuit 10 mile road race - incorporating the British Masters, English Masters and Road Runners Club 10 mile Championships
Organised by: ATW
ATW St Neots Triathlon - Race 1
04 May
ATW St Neots Triathlon - Race 1
Organised by: ATW
Watford Mencap's 10k, 5k and 1K Fun Run
05 May
Watford Mencap's 10k, 5k and 1K Fun Run
Organised by: ATW
HSV Sprint Triathlon
11 May
HSV Sprint Triathlon
Organised by: ATW
Hatch End - Harrow Triathlon
11 May
Hatch End - Harrow Triathlon
Organised by: Jetstream Tri Club
Alton Ten
11 May
Alton Ten
Organised by: Alton 10
Shredquarters 10km
11 May
Shredquarters 10km
Organised by: Barnes Fitness
Dinton 5km & 10km Summer Series
15 May
Dinton 5km & 10km Summer Series
Organised by: Barnes Fitness
ATW Box End Mixed Team Relay (incorporating British Triathlon Mixed Team Relay Championships)
17 May
ATW Box End Mixed Team Relay (incorporating British Triathlon Mixed Team Relay Championships)
Organised by: ATW
ATW Box End Triathlon
18 May
ATW Box End Triathlon
Organised by: ATW
ATW Centurion 100KM Triathlon Box End
18 May
ATW Centurion 100KM Triathlon Box End
Organised by: ATW
Cambridge Biomedical Campus 10k, 5k and Fun Run
18 May
Cambridge Biomedical Campus 10k, 5k and Fun Run
Organised by: ATW
Wheathampstead 10k & 2k Fun Run
18 May
Wheathampstead 10k & 2k Fun Run
Organised by: Wheathampstead10k
ATW Chiltern Hill Climb
24 May
ATW Chiltern Hill Climb
Organised by: ATW
The Bewl Water Triathlon
25 May
The Bewl Water Triathlon
Organised by: First Stride
Dorney Triathlon - May
25 May
Dorney Triathlon - May
Organised by: ATW
The Chiltern 100
25 May
The Chiltern 100
Organised by: ATW
ATW Chiltern Half Marathon & 10K
25 May
ATW Chiltern Half Marathon & 10K
Organised by: ATW
Dorney Lake Draft-Legal Triathlon - incorporating Sprint Triathlon 2026 World Championships Qualifier
25 May
Dorney Lake Draft-Legal Triathlon - incorporating Sprint Triathlon 2026 World Championships Qualifier
Organised by: ATW
Hatfield Broad Oak 10k
26 May
Hatfield Broad Oak 10k
Organised by: Hatfield Broad Oak 10k
Midweek Dorney Triathlon - May
28 May
Midweek Dorney Triathlon - May
Organised by: ATW
ATW Grafman Middle Distance Triathlon
01 Jun
ATW Grafman Middle Distance Triathlon
Organised by: ATW
Dorney Triathlon - June
07 Jun
Dorney Triathlon - June
Organised by: ATW
ATW St Albans Half Marathon #icelollyrun
08 Jun
ATW St Albans Half Marathon #icelollyrun
Organised by: ATW
ATW Stewartby Lake Triathlon & Aquabike
15 Jun
ATW Stewartby Lake Triathlon & Aquabike
Organised by: ATW
Alresford 10k
15 Jun
Alresford 10k
Organised by: Alresford Rotary
Springfield Striders Friday Night 5
20 Jun
Springfield Striders Friday Night 5
Organised by: Springfield Striders
Triffic Trail, London
22 Jun
Triffic Trail, London
Organised by: Trent Park RC
Twyford Kids Triathlon
22 Jun
Twyford Kids Triathlon
Organised by: Barnes Fitness
ATW Children’s Triathlon Mallory Park - June
28 Jun
ATW Children’s Triathlon Mallory Park - June
Organised by: ATW
Bicester Junior Triathlon
29 Jun
Bicester Junior Triathlon
Organised by: Bicester Triathlon Club Juniors
Silsoe Stride
29 Jun
Silsoe Stride
Organised by: Silsoe Stride 2025
Wargrave 10K & Fun Run
29 Jun
Wargrave 10K & Fun Run
Organised by: Barnes Fitness
ATW Triathlon - Mallory Park - June
29 Jun
ATW Triathlon - Mallory Park - June
Organised by: ATW
Midweek Dorney Triathlon - July
02 Jul
Midweek Dorney Triathlon - July
Organised by: ATW
ATW Odyssey Triathlon
05 Jul
ATW Odyssey Triathlon
Organised by: ATW
ATW Odyssey Aquabike
05 Jul
ATW Odyssey Aquabike
Organised by: ATW
ATW Odyssey12
05 Jul
ATW Odyssey12
Organised by: ATW
ATW Bristol Triathlon
06 Jul
ATW Bristol Triathlon
Organised by: ATW
ATW St Neots Triathlon - Race 2
06 Jul
ATW St Neots Triathlon - Race 2
Organised by: ATW
The Bishop's Stortford Mitre 10k, 5k & 1K
06 Jul
The Bishop's Stortford Mitre 10k, 5k & 1K
Organised by: The Bishop's Stortford High School
Tri and Paratri Festival 2025
12 Jul
Tri and Paratri Festival 2025
Organised by: Arctic One
Dorney Triathlon - July
13 Jul
Dorney Triathlon - July
Organised by: ATW
Tri-Force Juniors Triathlon 2025
13 Jul
Tri-Force Juniors Triathlon 2025
Organised by: Tri-Force Juniors
Castle To Coast Triathlon
19 Jul
Castle To Coast Triathlon
Organised by: ATW
Hathersage Hilly Triathlon
20 Jul
Hathersage Hilly Triathlon
Organised by: sheffieldtriclub.com
Eton Dorney Family Triathlon
20 Jul
Eton Dorney Family Triathlon
Organised by: Barnes Fitness
ATW St Albans Summer 10K
20 Jul
ATW St Albans Summer 10K
Organised by: ATW
Dorney Triathlon - July
27 Jul
Dorney Triathlon - July
Organised by: ATW
ATW Colchester Friday Night Runs
08 Aug
ATW Colchester Friday Night Runs
Organised by: ATW
Dorney Triathlon - August
09 Aug
Dorney Triathlon - August
Organised by: ATW
ATW St Neots Triathlon - Race3
10 Aug
ATW St Neots Triathlon - Race3
Organised by: ATW
ATW Oundle Triathlon
17 Aug
ATW Oundle Triathlon
Organised by: ATW
ATW Oundle Children’s Triathlon
17 Aug
ATW Oundle Children’s Triathlon
Organised by: ATW
ATW Mallory Race Circuit Summer Runs - Half Marathon, 10k, 5k & Fun Run
23 Aug
ATW Mallory Race Circuit Summer Runs - Half Marathon, 10k, 5k & Fun Run
Organised by: ATW
Midweek Dorney Triathlon - August
27 Aug
Midweek Dorney Triathlon - August
Organised by: ATW
HSV Sprint Triathlon
31 Aug
HSV Sprint Triathlon
Organised by: ATW
ATW Bedford Running Festival
06 Sep
ATW Bedford Running Festival
Organised by: ATW
The 1066 Triathlon
07 Sep
The 1066 Triathlon
Organised by: First Stride
Duck N Dash Aquathlon
07 Sep
Duck N Dash Aquathlon
Organised by: Freedom Tri
ATW Grafham Triathlon
13 Sep
ATW Grafham Triathlon
Organised by: ATW
Woking Autumn Triathlon & Junior Aquathlon
14 Sep
Woking Autumn Triathlon & Junior Aquathlon
Organised by: ATW
Dunstable Downs Challenge Half Marathon 2025
14 Sep
Dunstable Downs Challenge Half Marathon 2025
Organised by: Dunstable Road Runners
Sandridge 10k
14 Sep
Sandridge 10k
Organised by: Sandridge 10K
ATW Big East & Maldon Triathlon
21 Sep
ATW Big East & Maldon Triathlon
Organised by: ATW
Dorney Triathlon - September
27 Sep
Dorney Triathlon - September
Organised by: ATW
Fortitude Ultra - Denbies
27 Sep
Fortitude Ultra - Denbies
Organised by: ATW
ATW Welwyn Half Marathon & 10k
28 Sep
ATW Welwyn Half Marathon & 10k
Organised by: ATW
Moor Park 10K Run, 5K Walk & Junior Fun Runs
28 Sep
Moor Park 10K Run, 5K Walk & Junior Fun Runs
Organised by: East & North Herts Hospitals' Charity
Dorney Duathlon - October
04 Oct
Dorney Duathlon - October
Organised by: ATW
Burnham On Crouch 10K
05 Oct
Burnham On Crouch 10K
Organised by: Rotary Club Burnham
Love Luton RunFest - 5K, 10K
12 Oct
Love Luton RunFest - 5K, 10K
Organised by: ATW
ATW Holdenby House - Trail & Canicross
12 Oct
ATW Holdenby House - Trail & Canicross
Organised by: ATW
ATW Holdenby House Duathlon
12 Oct
ATW Holdenby House Duathlon
Organised by: ATW
ATW Grafham Duathlon - Incorporating the European Standard Duathlon Qualifier
26 Oct
ATW Grafham Duathlon - Incorporating the European Standard Duathlon Qualifier
Organised by: ATW
ATW Bedford 10k & Half Marathon
02 Nov
ATW Bedford 10k & Half Marathon
Organised by: ATW
ATW Remembrance Runs
08 Nov
ATW Remembrance Runs
Organised by: ATW
Dorney Duathlon - November
09 Nov
Dorney Duathlon - November
Organised by: ATW
ATW Triathlon Training Camp 2025 - Lanzarote
17 Nov
ATW Triathlon Training Camp 2025 - Lanzarote
Organised by: ATW
ATW Wendover Woods Trail Run & Canicross
23 Nov
ATW Wendover Woods Trail Run & Canicross
Organised by: ATW
ATW Hatfield 5
30 Nov
ATW Hatfield 5
Organised by: ATW
ATW Grafham Water - Trail & Canicross
07 Dec
ATW Grafham Water - Trail & Canicross
Organised by: ATW
Dinton Santa Dash - 2km & 5km
14 Dec
Dinton Santa Dash - 2km & 5km
Organised by: Barnes Fitness
ATW Nottingham Holme Run
21 Dec
ATW Nottingham Holme Run
Organised by: ATW
New Year's Day 10K Race and 3K Fun Run
01 Jan
New Year's Day 10K Race and 3K Fun Run
Organised by: Serpentine
ATW Mallory Race Circuit Winter Runs - Half Marathon, 10k, 5k and Fun Run
18 Jan
ATW Mallory Race Circuit Winter Runs - Half Marathon, 10k, 5k and Fun Run
Organised by: ATW
ATW Bedford 5 & 10
25 Jan
ATW Bedford 5 & 10
Organised by: ATW
ATW Watford Half Marathon & 10K
01 Feb
ATW Watford Half Marathon & 10K
Organised by: ATW
ATW Love Welwyn Garden City 10K
15 Feb
ATW Love Welwyn Garden City 10K
Organised by: ATW
ATW Bedford Half Marathon & 10k
22 Feb
ATW Bedford Half Marathon & 10k
Organised by: ATW
ATW Great Yarmouth Seafront Half Marathon, 10k & 5k
01 Mar
ATW Great Yarmouth Seafront Half Marathon, 10k & 5k
Organised by: ATW
Essex 20
15 Mar
Essex 20
Organised by: ATW
ATW Debden 10k and 5k
15 Mar
ATW Debden 10k and 5k
Organised by: ATW
ATW Run Fest at Lee Valley
22 Mar
ATW Run Fest at Lee Valley
Organised by: ATW

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