Former champion racehorse-cum-sire Somebeachsomewhere has died in America aged 13.

He had been battling ill-health since a cancerous tumour was discovered in his intestine in November.

Racing in the mid-2000s, the son of Mach Three won 20 of his 21 starts and over US$3.3 Million under the training of Brent MacGrath and held eight world records when he retired.

He retired to stud in 2009, standing at Hanover Shoe Farms in Pennsylvania, and immediately left his mark, producing the freakish Captaintreacherous (US$3.1 Million) and Little Brown Jug winner Limelight Beach among 13 millionaires.

Somebeachsomewhere was available for a number of seasons via frozen semen Down Under, but only shuttled here once – in 2012.

He stood at Empire Stallions in Victoria and served 75 mares in New Zealand that term.

Among his New Zealand-born progeny are Bonnie Joan, Somejoy and Opoutama while the best of his Australian-born foals are Waikiki Beach, Cable Beach, Menin Gate, Petacular and Nostra Beach.