Dutch runner Sifan Hassan trying to win the 5,000, 10,000 and marathon in Paris. ’It is very hard.’

Ethiopian-born Dutch runner Sifan Hassan aims to compete in the 5,000, 10,000, and marathon at the Paris Olympics.

Attempting to defend her 5,000 and 10,000-meter titles at the Olympics isn’t enough for Ethiopian-born Dutch runner Sifan Hassan. She also will push herself in the ultimate test of endurance, adding the marathon to her program at the Paris Games.

“I can’t tell you I’m going to get the gold medal in every event,” Ms. Hassan said Wednesday. “It is very hard.”

The 5,000 heats on Friday and the final on Monday.

The 10,000 on Friday, Aug. 9.

The marathon on Sunday, Aug. 11.

In all, she’ll compete over a whopping 62 kilometers (38.6 miles) — nearly far enough to run from Paris to Versailles and back twice. And she’ll have roughly only 35 hours between the end of the 10,000 and the marathon.

“I’m curious what is going to happen,” MS. Hassan said. “My biggest goal is to finish the event(s). And how I’m going to recover.”