Simplify the following text for a Grade 10 native English-speaking person.
Original: When time trial specialist Chris Boardman , who had retired from road racing and had prepared himself specifically for beating the record , had another go at Merckx 's distance 28 years later , he beat it by slightly more than 10 meters ( at sea level ) .
Simplified: When Chris Boardman had another go at Merckx 's reinstated record in 2000 , he beat it by slightly more than 10 metres at sea level . But , Merckx had raced a full road season winning the Tour , Giro and four Classics , while Boardman was a time trial specialist who had retired from road racing and had prepared specially for the 2000 Hour Record .