French racing authorities, which stage Europe's richest race - the Prix de l'Arc de Triomphe - on the first Sunday in October, had threatened to oppose the changes.

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Chiron is racing to finish late-stage trials of a method that grows strains within clones of a 1980s-era dog kidney cell.

FORBES: Broken Eggs

The evidence is tantalizing enough that the two drug giants are racing the combination into early-stage human tests.

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He eats about 9, 000 calories a day, burns 6, 000 calories during a stage, and takes in 300 calories an hour while racing.

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But at the halfway stage of his first season back in top-flight racing in nine years, Neil Hodgson admits it is proving a much taller order than he expected.

BBC: Neil Hodgson

Organisers of the games have been racing to complete work on venues built to stage the Olympics, drastically pushing up costs as contractors deploy double and triple working shifts.

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Ascot spokesman Nick Smith told the Racing Post the course would welcome the opportunity to stage the race.

BBC: Ascot could host Cheltenham race

The Pattern is designed to provide good tests for horses at the right stage of their development and it also guarantees top-class racing throughout the season.

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But organizers are starting to stage hundreds of shorter "sprints" lasting five or six hours that give moderately fit amateurs a taste of adventure racing.

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