The Winter 2017-18 issue of Splash should be in your mailboxes any day now. This issue features our 2017 Year in Review.

Read all about the most influential and impactful events from the past year. Some are happy; some are sad. All reaffirm USA Swimming as the top swimming program in the world.

As a companion to our print edition, we will be running a series on the top photos of the year from some of our biggest competitions. Today we take a look at the top photos from the 2017 Phillips 66 National Championships, June 27-July 1, in Indianapolis. (Photos by Tom Pennington//Getty Images)

Olympian Katie Ledecky emerged victorious from the women's 800m free.

Emma Barksdale and Zoie Hartman compete in the prelims of the women’s 200m breaststroke.

A view of the start of one of the heats in the prelims of the women’s 200m back.

Olympian Townley Haas leads Olympian Clark Smith in the men’s 200m free.

Olympian and world champion Chase Kalisz won the men’s 400m IM.

Olympian Leah Smith before the start of the women’s 400m free. She finished second in this event behind Katie Ledecky.

Olympian Matt Grevers swims in the prelims of the men’s 100m back. Grevers won this race in 52.71.

Haley Hines competes in the prelims of the women’s 100m back.

Kevin Cordes dives in at the start of the finals of the men’s 100m breast. Cordes set the American record in this event in 58.74.

Kathleen Baker celebrates on the medal stand after winning the women’s 100m back.

Matt Grevers at the start of the men’s 50m freestyle final.

Olympian Lia Neal at the start of the prelims of the women’s 50m free.

The field in a heat of the men’s 50m free get a quick start off the blocks.

Reece Whitley competes in the men’s 200m IM.

Swimmers warm up before the start of finals.