Cerebral palsy sufferer Gus McKechnie took on a 26.2 mile course last year, using hiking sticks in the hope of finishing within six hours.
A combination of hot weather and blisters on his hands led to his finishing time of eight hours and 26 minutes.
The 43-year-old will take on the challenge again next year, and is hoping to inspire people of all ages to bounce back.
Gus said: “With anything in life, it can be difficult to find the motivation to try again if you don’t succeed on the first attempt.
“We’re naturally wired to fear failure and having the courage to give it another go takes real mental resilience.