Romp Home Meaning

(idiomatic)To win easily, especially in a race.

Example: 1903, P. G. Wodehouse, Tales of St. Austin's
  The hour soon passed, and Charteris, having first seen the Oldest Inhabitant's nevvy romp home in the egg and spoon event, took himself off to the dressing-tent, and began to get into his running clothes.
1904, Guy Wetmore Carryl, The Transgression of Andrew Vane, ch. 3
  He’s a willing little beast, and not unlikely to romp home in the lead. I’d bet on him myself, except that I’m so damnably unlucky that it really wouldn’t be fair to you, Vane. I never back a horse but what he falls.