About the event 

Operation Bletchley is your physical and mental Codebreaking Challenge. Take on one of three missions this summer and crack the codes as you go. Choose from either 30 miles, 50 miles or 100 miles. Can you deliver your message before it’s too late? 

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, MapMyFitness or Garmin 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 2022.

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 2022 and once you have cracked all the codes successfully and deciphered the final message you must deliver it by midnight on 31 July 2022 to receive your mission accomplished status and well deserved medal. 


Every 3 miles (Cairo), 5 miles (London) or 10 miles (Paris) you’ll get a new code to crack sent straight to your inbox. Solve this 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 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. 


You have the choice to complete either a 30, 50 or 100 mile walk which can be done anywhere in the world, whether is your local town, village or even if you live abroad. Whichever distance you choose, you must finish before the 31st 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. 


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.


The challenge runs from the 1st - 31st 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 the 31st July to qualify for your medal. 

Your official Operation Bletchley medal will be awarded if you receive 'Mission Accomplished' status by the 31st July. You will need to complete the full miles you have chosen (30, 50 or 100) and deliver the coded message on time. 

In addition to your official Operation Bletchley medal there will also be a money can't buy commemorative pin badge on offer. These will be awarded to anyone who raises £250 for The Soldiers' Charity. 


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. ABF The Soldiers’ Charity is the official Charity of The British Army and will be there for soldiers, for life.  

Have fun

...Testing yourself mentally and physically on your codebreaking challenge.