Donald Trump's show-stealing arrival at the Women's British Open on Thursday upstaged another strong start to a major by South Korea's Hyo-Joo Kim.

Kim was midway through compiling a 7-under 65 in the first round when Trump, the American presidential candidate, landed in a private helicopter to begin a two-day visit at the tournament being staged at his Turnberry resort in western Scotland.

The on-course action was initially a sideshow for Trump, who seized the attention by inviting the media to his hotel near the course to continue his presidential campaign. The Republican eventually watched some golf, although the leaderboard was virtually locked in by then.

Kim, who shot a first-round 61 in winning the Evian Championship last year, was leading by one stroke from Lydia Ko and Cristie Kerr.

Ten groups are still to complete their rounds.