Richard Dunwoody has reached the half-way mark on his 1,000 Miles in 1,000 Hours Challenge.

The former champion jockey completed his 500th mile at 7pm on Friday, 19 June.

He had been walking for 130 hours, but apart from struggling from lack of sleep Richard is reported to be in good physical shape and his last 100 miles have been his fastest yet.

This week Richard will be joined by novelist Jilly Cooper (Wednesday 24 June) and Olympic swimmer and Strictly Come Dancing star Mark Foster (Thursday 25 June).

And next week List 1 dressage judge and trainer Malcolm Brown will be looking for a perfect 10 for his paces on Monday (29 June) when he joins Richard.

Malcolm, a former marathon runner who was diagnosed with heart problems in 2001 but who walked the London and Edinburgh marathons in 2005 and 2006, will join Richard at 4.30am.

“I’ll be practising my extended walk,” he said.

Richard is due to finish on 10 July at Newmarket racecourse.

His progress and photos and news updates can be found on the website plus on Facebook (Richard Dunwoody-Challenge) and Twitter