ATW Events

• Sun 23 Nov
• £19-£35

ATW Wendover Woods Trail Run & Canicross

Set in the stunning Wendover Woods, this is the perfect opportunity to challenge yourself on scenic trails surrounded by beautiful woodland. Enjoy the fresh air, stunning views, and rewarding trails.

• 5K run
• CaniCross
• 10K run
• Half marathon

• Sun 30 Nov
• £22-£24

ATW Hatfield 5

Join ATW Events for the 11th Year of the Hatfield 5, now featuring the Herts County Championships, this is the region's fastest 5 miler (3rd fastest time in the UK 2022).

• Road run

• Sun 7 Dec
• £30-£35

ATW Grafham Water | Trail & Canicross

The most scenic running event in Cambridgeshire! You are invited to the beautiful Grafham Water to tackle a scenic 10-mile trail run that circumnavigates the reservoir.

• 10 miler
• CaniCross

• Sat 13 Dec
• £47-£88

Dorney Duathlon | December

Take on a Super Sprint, Sprint or Standard distance and take the opportunity to race around this unique and inspiring Olympic venue!

• Super sprint duathlon
• Sprint duathlon
• Standard duathlon

• Sun 14 Dec
• FREE-£35

ATW Stevenage Winter Half Marathon & 10K

Starting and finishing on the fantastic Ridlins Stadium athletics track, the half marathon winds its way around the superb traffic-free tarmac routes that cover the town of Stevenage.

• Fun run
• 10K run
• Half marathon

• Sun 21 Dec
• £18-£36

ATW Nottingham Holme Run

Organised by ATW Events, this fantastic, traffic-free event takes place at the scenic National Water Sports Centre in Nottingham, offering a perfect setting for runners of all abilities.

• 10K run
• 5K run
• Half marathon

• Wed 31 Dec
• £28-£30

ATW St Albans New Years Eve 10K

Finish the year with a brand new PB and celebrate the arrival of a brand new year with a glass of fizz and a healthy twist at this New Year's Eve running extravaganza.

• 10 km road running + 108 ft ascent

• Sun 11 Jan 2026
• £23-£25

ATW Hatfield 10K

Chase your next PB at the ATW Hatfield 10K — a fast, scenic route on the Alban Way with free photos, medals, and unbeatable race-day energy with exciting perks!

• 10 km road running + 39 ft ascent

• Sun 18 Jan 2026
• £8-£30

ATW Mallory Race Circuit Winter Runs | Half Marathon, 10K, 5K and Fun Run

Gear up for an adrenaline-packed winter running experience like no other at Mallory Park Motor Racing Circuit!

• Fun run
• 5K run
• 10K run
• Half marathon

• Sun 18 Jan 2026
• £45-£85

Dorney Duathlon | Jan

Take on a Super Sprint, Sprint or Standard distance and take the opportunity to race around this unique and inspiring Olympic venue!

• Super sprint duathlon
• Sprint duathlon
• Standard duathlon

• Sun 25 Jan 2026
• £25-£31

ATW Bedford 5 & 10

This flat, fast, traffic-free and chip timed event is a sure-fire guaranteed way to give you the best chance of a PB over the 5 or 10 mile distance.

• Fun run
• 10 miler

• Sun 1 Feb 2026
• £12-£36

ATW Watford Half Marathon, 10K & Fun Run

This popular event has a strong history within the running community and has been taking place for over 40 years! Join a day of running, community spirit and exciting experiences.

• Fun run
• Half marathon
• 10K run

• Sat 7 Feb 2026
• £45-£85

Dorney Duathlon | Feb

Take on a Super Sprint, Sprint or Standard distance and take the opportunity to race around this unique and inspiring Olympic venue!

• Super sprint duathlon
• Sprint duathlon
• Standard duathlon

• Sun 15 Feb 2026
• £28-£30

ATW Love Welwyn Garden City 10K

11th anniversary! Welcome to the Love Welwyn Garden City 10K — historically held around Valentine's Day this is the event that encourages you to fall in love with running.

• 10 km road running + 246 ft ascent

• Sun 22 Feb 2026
• £28-£38

ATW Bedford Half Marathon & 10K

This chip timed event is a sure-fire guarantee to give you the best chance of a PB in the Half Marathon or 10K.

• 10K run
• Half marathon

• Sun 1 Mar 2026
• £19-£31

ATW Great Yarmouth Seafront Half Marathon, 10K & 5K

Combines the thrill of running and the picturesque charm of Great Yarmouth over a fast-paced course through the town's rich history and vibrant landscapes.

• 10K run
• Half marathon
• 5K run

• Sun 8 Mar 2026
• £45-£85

Dorney Duathlon | March

Take on a Super Sprint, Sprint or Standard distance and take the opportunity to race around this unique and inspiring Olympic venue!

• Super sprint duathlon
• Sprint duathlon
• Standard duathlon

• Sun 8 Mar 2026
• £20-£38

ATW Nottingham Holme Run

Join this fantastic experience on a completely flat course – perfect for achieving your personal best over a certified, accurate route, with free race photo, custom medal and friendly support!

• 5K run
• 10K run
• Half marathon

• Sun 15 Mar 2026
• £16-£27

ATW Debden 10K and 5K

This disused airfield has a fast, flat, tarmac course with no sharp corners, and the surrounding tree cover makes for relatively still conditions on most days - but your PB or run stress-free.

• 5K run
• 10K run

• Sun 15 Mar 2026
• £22-£34

Essex 20

The Essex 20 is held annually and is an ideal 20-mile race for the build-up to Marathon season, set over a 5-lap, flat, fast, tarmac course. Also hosting the Essex County Road Running Championships.

• Road run 2

• Sun 22 Mar 2026
• £26-£36

ATW Run Fest at Lee Valley

Smash your personal best on a traffic-free, flat and fast course from the White Water Centre and into surrounding beautiful regional parkland with a custom-designed medal for finishers.

• 10K run
• Half marathon

• Fri 3 Apr 2026
• £28-£30

ATW St Albans Easter 10K

A flat, fast and chip timed event - it's a sure-fire guarantee to give you the best chance of a PB in the 10K.

• 10 km road running + 108 ft ascent

• Sat 4 Apr 2026
• £45-£85

Dorney Duathlon | April

Take on a Super Sprint, Sprint or Standard distance and take the opportunity to race around this unique and inspiring Olympic venue!

• Super sprint duathlon
• Sprint duathlon
• Standard duathlon

• Mon 6 Apr 2026
• FREE-£34

ATW Stevenage Spring Half Marathon & 10K

From the fantastic Ridlins Stadium athletics track, wind your way around superb traffic-free tarmac routes and enjoy the beautiful Fairlands Valley Park the return to a vibrant event village!

• Fun run
• 10K run
• Half marathon

• Sun 12 Apr 2026
• £44-£55

ATW Mallory Park Duathlon - Incorporating the Draft-Legal Sprint Duathlon Age Group Qualifier (World Championship)

Experience the thrill of multisport racing at the ATW Mallory Park Duathlon — a fast, flat, and traffic-free course on one of the UK’s most iconic race circuits.

• Super sprint duathlon
• Sprint duathlon 2

• Sat 2 May 2026
• £58-£120

Dorney Triathlon | May

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sun 3 May 2026
• £55-£117

ATW St Neots Triathlon | Race 1

Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Standard aquabike

• Sun 10 May 2026
• £44-£49

HSV Sprint Triathlon & Aquabike

This is a great race for all standards, from the absolute beginner right through to the seasoned triathlete. The course is fast, flat and has great PB potential.

• Sprint triathlon
• Sprint aquabike

• Sat 16 May 2026
• £78-£178

ATW Big East & Maldon Triathlon

The Big East and Maldon Triathlon is brought to you by the largest triathlon organiser in the UK! A great experience featuring a tidal river swim.

• Sprint triathlon
• Olympic triathlon
• Standard aquabike
• Half Ironman
• Middle aquabike

• Sun 24 May 2026
• £65-£137

ATW Box End Triathlon

Experience a choice of multi-sport events — triathlon, relay triathlon and aquabike — at a stunning watersports venue with pristine water, scenic routes, a custom medal and more.

• Sprint triathlon
• Sprint aquabike
• Olympic triathlon
• Standard aquabike
• Half Ironman
• + 1 more race

• Wed 27 May 2026
• £58-£78

Midweek Dorney Triathlon | May

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Sprint aquabike

• Sat 6 Jun 2026
• £58-£120

Dorney Triathlon | June

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sun 7 Jun 2026
• £140-£180

ATW Grafman Middle Distance Triathlon & Aquabike

One of the country’s most popular middle distance swim-bike-run events, delivered by triathletes for triathletes, at the beautiful and iconic Grafham Water.

• Half Ironman
• Middle aquabike

• Sun 14 Jun 2026
• £11-£38

ATW St Albans Half Marathon, 10K, 5K & Fun Run

A community-focused event, ATW St Albans Half Marathon aims to raise money for local charities and organisations as well as put on a great day out for all the family, delivered by runners for runners.

• Fun run
• 5K run
• Half marathon
• Challenge walk
• 10K run

• Sun 21 Jun 2026
• £64-£117

ATW Stewartby Lake Triathlon & Aquabike

Dive into the ATW Stewartby Lake Triathlon and Aquabike – a flat, fast and friendly race offering stunning lake views, smooth roads, and surefire PB potential.

• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Wed 1 Jul 2026
• £58-£78

Midweek Dorney Triathlon | July

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Sprint aquabike

• Sun 12 Jul 2026
• £55-£105

ATW Bristol Triathlon

Swim, bike, and run through an iconic city backdrop with a flat, fast course and incredible atmosphere — one of the UK's most-popular 'closed-road' triathlons.

• Sprint triathlon
• Sprint aquabike
• Olympic triathlon
• Standard aquabike

• Sun 12 Jul 2026
• £58-£120

Dorney Triathlon | July

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sat 18 Jul 2026
• £260-£290
• Early bird

Castle To Coast Triathlon

A one-of-a-kind triathlon adventure from castle to coast – swim, bike, run and soak up the best of the North and South Downs, fully supported all the way, no navigation needed!

Early bird on now

• 1.2 miles lake swimming
• 66 miles road cycling + 3300 ft ascent
• 14 miles trail running + 1300 ft ascent

• Sun 19 Jul 2026
• £26-£28

ATW St Albans Summer 10K

ATW brings you the St Albans Summer 10K with a twist! Flat, fast and chip-timed with pacers to help you achieve a PB, plus buzzing event village for all the family with music, play zone and ice cream.

• 10 km road running + 108 ft ascent

• Sun 26 Jul 2026
• £58-£120

Dorney Triathlon | July

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sat 8 Aug 2026
• £140-£275
• Early bird

ATW Odyssey Triathlon

Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside featuring a swim in the River Ouse, a scenic ride and a run around the beautiful town of St Neots.

Early bird on now

• Ironman
• Half Ironman

• Sat 8 Aug 2026
• £115-£200

ATW Odyssey Aquabike

Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside comprising a swim in the meandering River Ouse followed by a cycle around scenic countryside.

• Long aquabike
• Middle aquabike

• Sat 8 Aug 2026
• £65-£117

ATW St Neots Triathlon | Race 2

Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.

• Sprint triathlon
• Olympic triathlon
• Standard aquabike
• Sprint aquabike

• Sat 8 Aug 2026
• £58-£120

Dorney Triathlon | August

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sat 8 Aug 2026
• £56-£93

ATW Odyssey12

The ATW Odyssey 12hr Run is more than just a running event, its a journey of self-discovery through the beautiful multi-terrain footpaths around St Neots.

• 12 hrs trail running + 0 ft ascent

• Sun 16 Aug 2026
• £54-£95

ATW Oundle Triathlon

ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Triathlon! It doesn’t matter if you are an experienced triathlete or this is your very first attempt at swim-bike-run.

• Super sprint triathlon
• Sprint triathlon
• Sprint aquabike

• Sun 16 Aug 2026
• £17-£25

ATW Oundle Children’s Triathlon

A fun, friendly and fully supported triathlon for children of all abilities — perfect for first-timers looking to experience the thrill of swim, bike and run in Oundle.

• Kids triathlon 5

• Wed 26 Aug 2026
• £58-£78

Midweek Dorney Triathlon | August

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Sprint aquabike

• Sat 5 - Sun 6 Sep 2026
• £12-£37

ATW Bedford Running Festival

More than just a running race! Join thousands at Bedfordshire’s most popular weekend of running with festival magic, live music, bar, yoga, kids zone, street food, outdoor cinema and fun fair!

• Fun run
• 5K run
• 10K run
• Half marathon
• Road run

• Sun 20 Sep 2026
• £55-£115

ATW St Neots Triathlon | Race 3

Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Standard aquabike
• Sprint aquabike

• Sat 26 Sep 2026
• £75-£116

ATW Grafham Triathlon

Sprint or Standard Tri or Aquabike, in and around the beautiful, clean reservoir, on a flat course for all abilities with custom-designed medal, free photos and finish line goodies.

• Sprint triathlon
• Olympic triathlon
• Standard aquabike

• Sat 26 Sep 2026
• £58-£120

Dorney Triathlon | September

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sun 4 Oct 2026
• FREE-£33
• Early bird

ATW Welwyn Half Marathon & Fun Run

The popular Welwyn Half Marathon starts and finishes on the impressive 400m athletics track at Gosling Sports Park with an ideal, traffic-free, disused railway line in between.

Early bird on now

• Fun run
• Half marathon
• 10K run

• Sat 28 Mar 2026
• £85

Fortitude Ultra - Pippingford

10 Hrs : 10 Laps : You-vs-You. Complete 10 laps of the ~3-mile, 4-mile or 5-mile loops in the given time.

• 10 hrs trail running

• Sun 12 Apr 2026
• £8-£24

ATW Mallory Park Runs

Gear up for an adrenaline-packed winter running experience like no other at Mallory Park Motor Racing Circuit!

• Fun run
• 5K run
• 10K run

• Sun 26 Apr 2026
• £16-£64.50

Woking Spring Triathlon & Junior Aquathlon

Join one of the most popular triathlons, where athletes return year after year!

• Super sprint triathlon
• Sprint triathlon
• Sprint aquathlon
• Kids aquathlon 5

• Sat 23 May 2026
• £125

ATW Box End Mixed Team Relay

Join up with your friends and/or clubmates to take part in the exciting Team Relays at Box End!

• 350 m lake swimming
• 7.7 km road cycling + 102 ft ascent
• 1 km road running + 0 ft ascent

• Sun 5 Jul 2026
• £65-£160

ATW Odyssey At Box End Triathlon

Get ready for one of the UK’s most exciting triathlon events of the year!

• Sprint triathlon
• Olympic triathlon
• Half Ironman
• Sprint aquabike
• Standard aquabike
• + 1 more race

• Sat 1 Aug 2026
• £60-£85

ATW Mallory Park Triathlon - Incorporating the 2027 European Age Group Championship Sprint Triathlon Qualifier

Mallory Park Triathlon - Incorporating the 2027 European Age Group Championship Sprint Triathlon Qualifier.

• Super sprint triathlon
• Sprint triathlon

• Sat 8 Aug 2026
• £56-£275

ATW First To Full Triathlon Festival

Be part of a UK first. This isn’t just another triathlon—it’s the first event of its kind where you decide the distance, from sprint to full, and race your way.

• Sprint triathlon
• Olympic triathlon
• Half Ironman
• Ironman
• Sprint aquabike
• + 4 more races