Finnley Kenny enjoyed his first outing in the London Marathon mini wheelchair race on Sunday.
The 2014 News Sports Awards runner-up competed in the three-mile race at under-14 level.
Kenny, 11, finished third in his age group in a time of 22min 36sec and 14th overall in the boys section.
His dad, Tom, said: ‘He did fantastically well.
‘He really enjoyed the day.
‘He found it hard work but he’d put in all the training.
‘He got a better time than he’d hoped for.
‘The organisation was amazing and the atmosphere was incredible.
‘He was really nervous in the build-up to the race.
‘They all did a general warm-up beforehand but as soon as he started pushing, he relaxed into it.
‘It was a bit wet at the beginning but the roads were still lined with crowds of people.
‘It was a big crowd particularly coming up to the finish.
‘ It just makes a real difference to everyone competing.
‘It’s a fantastic feeling when these people are all there in support.’
And now he cannot wait to do it all again next year.
‘He definitely wants to do it again, he’s going to try and do it next year,’ added dad Tom.
Kenny wasn’t the only one competing from Portsmouth.
His training partner Eden Rainbow-Cooper, who also attends Portchester Community College, came second in the under-14 girls wheelchair category in 14.59.
Meanwhile, City of Portsmouth athlete Josie Czura finished seventh in the girls under-15 mini marathon in a time of 17.11.