East of England

• Sat 20 Dec
• £27-£29

Christmas Canter | 5K

It's December, so what better way to finish the year than with a Christmas event? Follow the Windmill Way route for 5K.

• 5 km road running

• Sat 20 Dec
• £27-£29

Christmas Canter | 10K

It's December, so what better way to finish the year than with a Christmas event? Follow the Windmill Way route for 10K.

• 10 km road running + 358 ft ascent

• Sat 20 Dec
• £27-£32

Christmas Canter | Half Marathon

It's December, so what better way to finish the year than with a Christmas event? Follow the Windmill Way route over half marathon distance.

• 13.1 miles road running + 764 ft ascent

• Sat 20 Dec
• £32.50-£37.50

Christmas Canter | Full Marathon

It's December, so what better way to finish the year than with a Christmas event? Follow the Windmill Way route over two laps for the marathon distance.

• 26.2 miles road running + 1528 ft ascent

• Sat 20 Dec
• £32.50-£37.50

Christmas Canter | Ultra Marathon

It's December, so what better way to finish the year than with a Christmas event? Follow two laps of the Windmill Way route plus 5K to make the ultra distance of around 47K.

• 7 hrs road running

• 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 + 92 ft ascent

• Sun 11 Jan 2026
• £33-£38

WTF Where's The Finish?

Run as far as you can during the 4 or 6-hour event through Brandon Country Park in the very heart of Thetford Forest on a multi-terrain loop. Run, rest, then head out for more.

• Multi-terrain run 2

• Sun 11 Jan 2026
• £27-£29

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

• Sat 17 Jan 2026
• £27-£35

Windmill Way Wander

It's New Year! So what better way to start the year than with an event? Follow the Windmill Way route on a distance of your choice - 5K, 10K, Half Marathon, Marathon or Ultra within 7 hours.

• 5K run
• 10K run
• Half marathon
• Marathon
• Ultra run

• Sat 24 Jan 2026
• £27-£38

OMG (One Mile 2 Go) Run

Run as far as you can during the 4 or 6-hour event through the lovely Bawsey Country Park on a multi-terrain loop. Run, rest, then head out for more.

• Multi-terrain run 2

• 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

• Sun 1 Feb 2026
• £60

Peddars Way Ultra

A 48-mile route through historical Suffolk and Norfolk, starting from Knettishall Heath Nature reserve and running north to Holme-next-the-Sea on the Norfolk Coast.

• 48 miles trail running + 1923 ft ascent

• Sun 8 Feb 2026
• £33-£38

Run for Cake

Back to Ferry Meadows Country Park for another 4 or 6-hour running challenge! Run as much as you want through the forest on a multi-terrain loop. Run, rest, then head out for some more.

• Multi-terrain run 2

• Sat 14 Feb 2026
• £33-£38

Valentines Challenge

In 2026 Valentines Day falls on a Saturday, so why not come along and earn some Valentine-themed bling! Run as far as you can during six hours, whether 5K or 50K, you'll love it!

• 6 hrs trail running + 558 ft ascent

• 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 22 Feb 2026
• £27-£38

Thetford Festival of Running

New venue! Come and enjoy the paths, trails and woodland of Thetford Forest over the distance of your choice with fantastic support each lap and a medal at the finish!

• 5K run
• 10K run
• Trail run
• Half marathon 2
• Marathon
• + 1 more race

• Sun 22 Feb 2026
• £60

St Peters Way Ultra

42 miles of footpath meandering through the historic countryside of Essex in an easterly direction towards the coast, along an ancient pilgrimage route dating back to the 7th century!

• 42 miles trail running + 2117 ft ascent

• 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
• £33-£35

Colchester Half Marathon

An exciting stadium base and a route which takes you past iconic landmarks of the UK's oldest town with thousands of people cheering you on as you run through the centre!

• 13.1 miles road running + 403 ft ascent

• Sun 8 Mar 2026
• £20-£35

TTP Cambridge Half Marathon

Run 13.1 unforgettable miles through Cambridge’s historic streets and iconic University grounds on a flat, fast-paced course perfect for supporting a charity cause and chasing a personal best.

• 13.1 miles road running

• 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

• Sat 21 Mar 2026
• £27-£38

Moo-rathon, Calf and Hen K

Marathon, Half and 10K! Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.

• Multi-terrain 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

• Sun 29 Mar 2026
• £33-£38

Zig Zag Challenge

Run as far as you can during the 4 or 6-hour event through Brandon Country Park in the very heart of Thetford Forest on a multi-terrain loop. Run, rest, then head out for more.

• Multi-terrain run 2

• 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

• 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
• £27-£38

Haughley Festival of Running

Join in at the beautiful Haughley Park for the Haughley Festival of Running and join like-minded runners tackling a variety of distances on the day within the 4 or 6-hour time limit.

• 5K run
• 10K run
• Half marathon 2
• Marathon
• Ultra run
• + 1 more race

• Sun 19 Apr 2026
• £27-£38

The Roman Ramble

A relaxed, lap-based trail run through picturesque countryside, giving you complete control over your distance — perfect for beginners, returning runners or those chasing longer goals.

• 5K run
• 10K run
• Trail run
• Half marathon 2
• Marathon
• + 1 more race

• Sun 26 Apr 2026
• £27-£38

The Other Run

On the same day as the famous marathon in London, why not come along to The "Other" Run? Use this event to earn your Virtual London Marathon medal and a Zig Zag medal too.

• 5K run
• 10K run
• Half marathon
• Marathon
• Ultra run

• 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

• Sat 9 - Sun 10 May 2026
• £20-£25

Mighty Hikes | Norfolk Coast

Starting in Cromer, this scenic coastal hike follows beautiful beaches and picturesque villages along the coast, combining breathtaking views with the chance to support people living with cancer.

• Charity hike 2

• Sun 10 May 2026
• £29-£38

Zig Zag Marathon and Half

Come and join in at this exclusive venue! The marathon takes on the officially measured Kirtling Road route and the half marathon follows the Windmill route. Both are undulating and very scenic.

• Half marathon
• Marathon

• 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 17 May 2026
• £27-£38

The Birthday Run

Zig Zag Running is 6 years old this month so why not come along and celebrate?! You are promised lots of cake!

• 5K run
• Multi-terrain run 2
• Half marathon 2
• Marathon
• Ultra run

• Sat 23 - Sun 24 May 2026
• £33-£165

Farmmageddon

Can you survive Farmmageddon? You have 32 hours to complete 100 miles over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm. 24-hour or shorter distance options too.

• 5K run
• 10K run
• Half marathon
• Marathon
• Ultra run 2
• + 2 more races

• Sat 23 May 2026
• £125

ATW Box End Mixed Team Relay

Unleash your team’s speed and strategy in an exhilarating mixed relay, racing through swim–bike–run laps at Box End’s stunning, spectator-friendly lakeside venue.

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

• 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

• Sun 31 May 2026
• £27-£38

Circuit Du Sore Legs

In its sixth year! Come take on the challenge of the track at Wodson Park. Do you have it in you to complete your distance on a 400-metre athletics track?

• 5K run
• 10K run
• Half marathon
• Marathon
• 50K ultra run
• + 1 more race

• Mon 1 - Tue 30 Jun 2026
• £12

Sparkle Walk

Get your sparkle on and make every step count! Join Sparkle Walk 2026 and help Haven House do everything they can to support children and families going through the toughest of times.

• 10 km walking

• Sat 6 Jun 2026
• £80-£130

Suffolk Back Yard Ultra Festival

Push your limits at the highly competitive Summer Suffolk Backyard Ultra — run 4.167 miles every hour, on the hour, until only one runner remains standing.

• Fixed time runs 2
• Ultra run

• 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 7 Jun 2026
• £27-£38

Valley of the Owls Run

This routes takes in the village of Ousden which is known as the Valley of the Owls in Suffolk, with some of the oldest roads in England and very beautiful countryside.

• 5K run
• 10K run
• Half marathon
• Marathon
• Ultra run

• 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 14 Jun 2026
• £26-£28

The High Easter 10K

A cracking countryside 10K bursting with heart and community spirit in the picturesque little village of High Easter with a cash reward for beating the course record!

• 10 km road running + 98 ft ascent

• Sun 21 Jun 2026
• £16-£26

Run Sandringham 10K & 5K

Start and finish in the grounds of the Sandringham Estate, The Royal Family’s winter retreat, and enjoy a super-scenic 5K or 10K, great atmosphere, medal, goody bag and event hub.

• 5K run
• 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

• Sun 21 Jun 2026
• £75-£110

Southend Triathlon

Take on an exciting coastal triathlon in Southend, featuring a sea swim, fast seafront cycle, and scenic run with fantastic crowd support all the way.

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

• Sat 27 Jun 2026
• £27-£38

Cock-a-doodle Dawdle

Join like-minded runners doing different distances, starting from the base camp of Hyde Hall Farm and encompassing the beautiful grounds around it.

• 5K run
• 10K run
• Trail run
• Half marathon 2
• Marathon
• + 1 more race

• Sun 5 Jul 2026
• £33-£38

Summer Ready Run

Come and join the fun in a 4 or 6-hour running challenge at Ferry Meadows! Run as much as you want through the forest on a multi-terrain loop. Run, rest, then head out for some more.

• Multi-terrain run 2

• 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! Dive into crystal-clear lake waters at Box End, then ride a smooth, rolling bike course and follow scenic on-site run paths.

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

• Sun 12 Jul 2026
• £27-£38

Norfolk Festival of Running

Run, lap, repeat — from 5K to ultra-marathon across scenic trails at Bawsey Country Park, with friendly support, flexible distances and the freedom to run your own way.

• Fixed time runs 2

• Sat 18 Jul 2026
• £20-£25

Big Hike | Suffolk & Essex

Escape to nature and experience the Dedham Vale National Landscape. You’ll explore rolling meadows, the River Stour and pass by Flatford Mill, all whilst supporting life-saving research.

• Charity hike 3

• 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

• Thu 23 Jul - Sat 1 Aug 2026
• £300-£350

Great Barrow Challenge | 10 events in 10 days

10 running events in 10 days in the beautiful Suffolk countryside. Run 5K, 10K, Half Marathon, Marathon or an Ultra every day for 10 days in this unique endurance challenge!

• 10 days trail running

• Sat 8 Aug 2026
• £145-£285
• 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
• £120-£210

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