Photos: Kona 2017’s Age Groupers

2017 Ironman World Championship Age Groupers

American Ellen Hart smiles before the start of the race. She went on to finish seventh in her age group in 12:00:27. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Age-group athletes line up on the beach and get ready for the start of a long day. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

It was a fairly calm start to the day. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Age-group men pile into the water. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

The age-group men were by far the biggest group in the race. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Three-time Ironman world champion Craig Alexander is on hand to cheer on the athletes. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

The age-group men line up for the long day of racing. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

And they’re off! Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

The 2,350 bikes await the athletes on Kona’s pier. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

The age-group women are the final group to dive into the water. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Canada’s Alexandre Boule on the bike. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Germany’s Dirk Niederau. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Australia’s Ian Lack. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Canada’s Carl Desruisseaux. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Germany’s Jan Selnes. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

A group of athletes make their way down the Queen K. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Team Hoyt. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Team Hoyt. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Athletes march through the Energy Lab, the toughest part of the marathon course. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

An athlete runs through the Energy Lab. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

That’s one way to cool down! Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

The volunteers are a huge part of the race. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Athletes run in and out of the Energy Lab. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

A busy time on the Queen K. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

South Africa’s Helen Susannah Webb was the first visually impaired female athlete to complete Ironman South Africa. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

American Ellen Hart on the run. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Athletes on the Hoka One One run course. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Athletes get much needed hydration and nutrition at an aid station at the 2017 Ironman World Championship. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Athletes do anything and everything to stay cool on the blazing marathon course. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

The Energy Lab remains busy as the suns start to set on race day. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Poland’s Wojtek Szeliga on his way to a 11:43:04 finish. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

After the Energy Lab athletes are in the homestretch of the marathon. Photo: Paul Phillips/Competitive Image

2017 Ironman World Championship Age Groupers

Even though the sun sets on racing, there are still about six hours to go. Photo: Paul Phillips/Competitive Image

This year more than 110,000 athletes vied for a slot to the Ironman World Championship, and 2,350 athletes earned the right to race in Kona. Here photographer Paul Phillips shares images from the epic day of racing on Oct. 14.

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