About the event

Operation Bletchley is your Virtual Codebreaking Challenge. Cover either 50 or 100 miles on foot this July and crack the codes as you go. Can you deliver your message before it’s too late?

What do I do?

Sign up now and you will automatically create your own fundraising page. You can use this to track your walks, mark off your cracked codes and rack up all of your fundraising! Use a pedometer app (we recommend Strava), website or a good old-fashioned map to track your steps – whether at home, at work or exploring at the weekends and watch your progress on your own personal challenge page.

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. Share this page with the whole world and watch the donations add up.


You have the choice to complete either a 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 can crack the codes as you go or save them up until the walk is complete. Once all 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 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 (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 fundraisers pin badge on offer. These will be awarded to anyone who raises £250 for The Soldiers' Charity.


There is no obligation to fundraising 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. Raise £50 to earn an Operation Bletchley codebreaking puzzle book, £100 to receive your Fundraising Army Buff, £150 to receive an Operation Bletchley t-shirt and £250 for an Operation Bletchley fundraising pin badge.

Have Fun

Sign up and simply have fun testing yourself mentally and physically on your virtual codebreaking challenge.