He was welcomed by family and friends at the finish line in the centre of Honiton, Devon, just before 3pm on Remembrance Sunday 13th November 2021.
Chris had completed the distance, equivalent to nearly three back-to-back marathons, in just under 17 and a half hours, well within his 18-hour target.
He immediately appealed for help in setting the next challenge, saying: “Ouch that hurt but challenge complete. Thank you everyone for your support. It means the world.
“Let’s see what comes next. Suggestions for the next charity challenges are welcome!”
The 70-mile course was formed of three laps of a circular route taking in his home town of Honiton and the villages of Dunkeswell and Ottery St Mary.
Chris, who served in the Coldstream Guards for 15 years, has launched a campaign he calls Community Charity Challenge to complete extreme events to raise cash for good causes.
SafeGroup has been supporting the challenge. Donations will be shared by the Royal British Legion, which is celebrating its centenary, and the Devon Air Ambulance Trust.
Chris, aged 46, dedicated his fundraising effort to his brother, Mark, who served in the British Army in the Royal Corps of Transport in the First Gulf War in 1991.
Mark became chronically ill after the war and died in August 2016. Chris says his brother had been one of an estimated 250,000 veterans who contracted Gulf War Syndrome, the cause of which is still being researched.