He has covered the equivalent distance of Norwich to Swansea, Holy Island, or Bremen in Germany (as the crow flies) but eight year old Henry Kerrison has not finished yet.

Eastern Daily Press: Eight-year-old Henry Kerrison who has just completed his his 100th Parkrun, with his dad John at Eaton Park. Picture: DENISE BRADLEYEight-year-old Henry Kerrison who has just completed his his 100th Parkrun, with his dad John at Eaton Park. Picture: DENISE BRADLEY (Image: Copyright: Archant 2016)

The Eaton Primary School pupil achieved a landmark which few of his age can match.

When he crossed the finish-line on Saturday after a gruelling 5km run in around 23C heat it was the 100th time the dedicated youngster had finished Parkrun.

'It feels really good to have run 100 parkruns,' Henry said.

'Now my aim is to beat my older brother's best time.'

Henry, who also plays rugby, football and cricket, took part in his first Parkrun aged just five, when he finished in around 38 minutes.

Since then the free timed event, which continues to grow in Norfolk and further afield, has become a regular feature of his weekend – with his brothers George, 14, and Charlie, 10, and sister Lily, 12, also taking part on occasions.

But the rest of his family have been unable to match Henry's dedication to Parkrun – and on Saturday he was given a special T-shirt which is only awarded to people who complete their 100th run.

John Kerrison, Henry's father, said: 'It's a great event because everyone can take part.'

Henry added: 'I want to beat my brother George's best time of 23 minutes and then it would be good to get the T-shirt given to people who finish 250 parkruns.'

Henry has run the Mulbarton, Gorleston, Catton, and Brundall parkruns along with the Eaton Park event, and he said Brundall was his favourite.