THE ULTIMATE CODEBREAKING CHALLENGE
40* Miles | 10 Codes | 1 Month | January 2026
Have you got what it takes?
Your Mission:
Cover the distance, crack the codes, and deliver the final message before time runs out.
Starting 1st January, take on our Berlin challenge: walk 40 miles* through “Soviet territory,” decrypt intelligence, and help return stranded contacts to HQ. Can you complete the mission and earn your medal?
Join from anywhere using your phone or fitness tracker.
Tackle codes, explore the outdoors, and discover the true stories of WWII heroes in one of the UK’s most innovative events.
*Option to adjust distance to suit your ability.
CODES
Choose from three code levels:
- Junior
- Codebreaker
- Cypher Expert.
Join this exciting challenge this winter and support the ABF providing a lifeline to soldiers, veterans, and their families.
You have one month to walk the miles, crack the codes, and deliver the final secret message.
REGISTER NOW - Your mission starts on the 1st January.
YOUR MISSION: Berlin 1949
It’s January 1949. Since the fall of the Nazi regime, Germany has been carved up into four zones. Deep inside the Soviet zone, hundreds of miles from the Western boundary, is the capital of Berlin. And like the rest of the country, Berlin, too, is divided into four zones.
Cooperation between East and West has deteriorated, and on 18 June 1948, Stalin’s communist regime closed road, rail and water supplies to West Berlin – leaving two million Germans cut off from vital resources.
We need you to go beyond the blockade and discover the truth of what’s happening in the East. We’ve arranged for you to make contact with key officials, but you’ll need to move on foot and crack codes along the way to avoid being captured. It’s a frosty journey that’s certainly not for the faint-hearted. Are you up to the challenge?
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Find the fundraising page of someone already taking part in Operation Bletchley
