Oren Lotan arrived in Cambridge last month following a mammoth six-month ride that started in Istanbul, Turkey.
He was due to start the next leg when his beloved bike was stolen from where he was staying with friends on November 7.
The 37-year-old engineer from Israel said his plans are now on hold until he can trace it or find a replacement.
Oren said: ‘I literally had to sit down when it happened. It was crushing, I’m still distraught.
‘That bike has gone thousands of miles with me through a lot of good and bad experiences and all sorts of countries.’
Oren’s epic pedal has seen him take in Turkey, Bulgaria, Macedonia, The Balkans, Italy, Switzerland Luxembourg, France and the Netherlands before the UK.