South Korea's In Gee Chun remains the runaway leader of the KPMG Women's PGA Championship, as she holds a six-shot lead after Friday's second round at Bethesda, Maryland.

Chun, up by five after the first round, carded a 3-under-par 69 on Friday at Congressional Country Club to add a stroke to her advantage. She sits at 11-under at the tournament's midpoint.

New Zealand's Lydia Ko, who shot a second-round 67, and Jennifer Kupcho, who carded a 68 on Friday, are tied for second at -5.

Stephanie Meadow moved into a share of 14th with a 69, which featured four birdies and just a single bogey.

Meadow finished the day on -3, eight shots behind leader Chun.

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Leona Maguire guaranteed her place in the weekend with a birdie on 17 that secured a level-par 72.

The Cavan native had been just inside the cut mark of +3 but that took her to a more comfortable +2 overall and she will hope to improve on her indifferent start on Saturday.

Although Chun finished the day five strokes worse than the course-record 64 she produced on Thursday, she was satisfied with her day's work.

"I think (69) is still a great score," said Chun, who is looking for her third career major championship.

"Before I started today, I really don't want to think about yesterday. It was almost a perfect game I had (Thursday)."