Runner Stephanie Case completed the 100-kilometer (62 miles) Ultra-Trail Snowdonia ultramarathon in 16 hours and 53 minutes, winning a race that also involves over 21,000 feet of climbing.

Adding to her impressive feat was the fact that she stopped at aid stations along the way to breastfeed her 6-month-old daughter, Pepper. Case said she breastfed three times during the race.

Because she had taken some time away from running, she was not among the "elite" runners who were able to start ahead of her. This meant that when she crossed the finish line, Case had no clue that she had won.

"I have gained way more joy and strength from this sport as a mom than I ever did before. While it broke my heart to leave little Pepper at the aid stations, I wanted to show her—both of us—how amazing mom

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