Tim Daniels has raised more than Â£20,000 for the Hampshire and Isle of Wight Air AmbulanceÂ after they treated him following a cycling collision in 2013.
The service's critical care team was called to Owslebury, near Winchester, after Tim, who had beenÂ on a bike ride,Â hit a telegraph pole.
As aÂ way of saying thank you, he and hisÂ friend Rob Sanderson took on the challenge of cycling 700 miles from Caen to Cannes in eight days.
Tim said: '˜The challenge was an important milestone for both Robbie and me. It was the hardest challenge of my life, but also one of the best experiences.
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'˜We had plenty of highs, lows and emotional moments, culminating at the finish in Cannes where my wife and family were waiting.'
Together, they raised more than Â£40,000 which was split between the air ambulance and MND.
Air ambulance chief executive Alex LochraneÂ said: '˜The effort that Tim and Rob have put into raising funds for us and MND is phenomenal.Â
'˜Not only will the money raised make a huge difference to our charity, but the awareness they have generated is priceless.'