Definition of half-length | Bee Dictionary of English

Coming into the last 200 metres, the bow of the California shell was a half-length ahead of Canada and England but it was even with the bow of the Italian boat.
It was a dangerous position, because the Pennsylvania Athletic Club had been a half-length behind at the mile, was now a half-length ahead, and there was only 50 yd.
Sir Harry, big chestnut colt owned by the Seagram stables, was first to thunder past the finish post, a half-length ahead of Dangerous, his only serious competitor.

All News
A half-length separated Sky Lantern and Just the Judge when they finished first and second in the Group 1 English 1000 Guineas at Newmarket on May 5, and they are rematched in Friday’s Group 1 Coronation Stakes for 3-year-old fillies at Royal Ascot.
June 21, 2013 - Daily Racing Form
Royal Ascot: Sky Lantern, Just the Judge rematched in Coronation
A half-length separated Sky Lantern and Just the Judge when they finished first and second in the Group 1 English 1000 Guineas at Newmarket on May 5. That alone would make their appearance in Friday’s Group 1 Coronation Stakes for 3-year-old fillies at Royal Ascot a duel to savor.
June 19, 2013 - Daily Racing Form

Todd Pletcher in New York Daily News
I was very, very pleased with the work,trainer Todd Pletcher said. "He started out about a length and a half or two lengths behind the other horse, then he finished up about a half-length ahead. It was a very good move for him."
Stephen Wynn in New York Times
On Dec. 8, the day of the auction, though, Mr. Wynn called several old-master dealers and Rembrandt scholars to ask their opinion of the work, "Portrait of a Man, Half-Length, With His Arms Akimbo" (1658), experts said.
Richard Mandella in Whittier Daily News
He was beaten about a half-length and ran really well,Mandella said. "We don't anticipate that he wouldn't like it."

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