About the event 

Operation Bletchley is a series of codebreaking challenges taking place 4 times a year for the Army Benevolent Fund. Complete all 4 in one year and be suitably rewarded! 

This summer, take on one of the UK's most innovative events as you tackle the fiendish codes, explore the great outdoors and learn more about our incredible heroes from the Second World War.

Challenge yourself and your family and friends to cover 80 miles* on foot in our London mission as you attempt to secure a new line of communication from Bletchley Park to the Cabinet War Rooms in London.

Can you deliver your message before it’s too late? 

*If 80 miles is too much/too little, you will also have the option to increase/decrease your mileage before the mission start date to suit your ability.

What do I do?

Sign up now and you will automatically create your own event page. This is so much more than just a place for your fundraising. You will use this page to track your walks, rack up your miles, mark off your cracked codes and earn fundraising milestone badges. Share this page with the whole world and watch the donations add up. 

You can link your page directly with Fitbit or MapMyFitness to track your walks automatically or you can simply add your miles manually to your page. Instructions on how to do this can be found here. We recommend you do this at least 24 hours before the start of the event on 1 July .

Use any device you like, the site is set up to work on your mobile, tablet or laptop, making it easy to keep track of your challenge wherever you are.  

Cover the miles of your chosen mission during July and once you have cracked all the codes successfully and deciphered the final message you must deliver it by midnight on 31 July 2024 to receive your mission accomplished status and well deserved medal.

Codes

If you do not adjust your mileage and stick with the 80 mile challenge, you will receive your new code to crack after every 8 miles completed. These will be sent straight to your inbox. If you have increased or decreased your mileage, the codes will be delivered EVERY 10% of your total distance completed.

You can choose to solve the codes right away, or save them up for the end. You'll need to solve the first 9 codes to solve the final code. 

Submitting your answers:

You can now submit the answer to each code in your event area on your fundraising page and find out instantly if you've solved each code correctly! To submit your answers simply follow these easy steps: 

1.Log in to your page and go to 'Dashboard'. 

2.Click on 'Codes and Answers'. 

3.Choose your level (Junior, Codebreaker or Cypher Expert). 

4.Choose your code number. 

5.Enter your answer! You'll find out straight away if it is correct. 

Distance

Your 80 miles can be completed anywhere in the world, whether is your local town, village or even if you live abroad. Whether you choose to increase or decrease your distance, you must finish before midnight on 31 July. You’ll have 10 codes to crack and once all the codes are successfully decrypted you must decipher the final message and deliver it. 

If you would like to adjust the distance to suit your ability, simply change this during registration or once registered, visit the 'My Fitness Activity' tab and you will be able to adjust it here (minimum of 20 miles applies - we can't be too kind to you Agents!).

Fitness

This challenge is for everyone. Whether you are a beginner and want to get into walking or are a keen walker and want a bit of fun competition. You can do the challenge in your own time or race others to try and finish first with the added twist and codebreaking element.

Time

The challenge runs from 1 - 31 July. Feel free to keep tracking your steps until the very end. Your fundraising page will stay open for one month after the challenge ends, but you must submit your final answer by midnight on 31 July to qualify for your medal. 

Your official Operation Bletchley medal will be awarded if you receive 'Mission Accomplished' status by midnight on 31 July. You will need to complete the full mile and deliver the coded message on time. 

In addition to your official Operation Bletchley medal there will also be a money can't buy fundraisers pin badge on offer. These will be awarded to anyone who raises £250 for the Army Benevolent Fund. 

Fundraising

There is no obligation to fundraise but if you do there are plenty of rewards on offer. The money you raise will help support soldiers, veterans and their families in need. The Army Benevolent Fund is the official Charity of The British Army and will be there for soldiers, for life.  

• Get your first donation on your page to get an Operation Bletchley: London pencil (this can be as little as £1!).
• Raise £25 to receive an additional 3 codes to crack delivered by a well known voice!
• Raise £50 to earn an Operation Bletchley: London codebreaking puzzle book. 
• Raise £100 to receive your Operation Bletchley: London Buff. 
• Raise £150 to receive an Operation Bletchley: London t-shirt. 
• Raise £250 for an Operation Bletchley: London fundraising pin badge. 

Have fun

Testing yourself mentally and physically on your codebreaking challenge.