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Portrait of Ultrarunner Courtney Dauwalter 33, ...
Joe Amon, The Denver Post
Portrait of Ultrarunner Courtney Dauwalter 33, of Golden winner of the 2018 Western States 100-Mile Endurance Run in California on Lookout Mountain June 28, 2018 in Golden.
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Courtney Dauwalter’s attempt to break a record along the Colorado Trail has ended — for now — due to acute bronchitis.

Dauwalter, 35, of Golden, had stepped onto the start of the Colorado Trail in Durango Wednesday at 2 p.m. with a goal to run the 486 miles to Denver in record time.

Her husband Kevin Schmidt wrote on her Instagram Monday around 6 a.m. that Dauwalter was wheezing in the crew’s RV that morning, so her crew decided to take her to an emergency room in Leadville.

According to her Garmin GPS, she stopped running east of Twin Lakes, which would mean she had completed more than 300 miles of the 486-mile trail in a little more than five days.

RELATED: Golden ultrarunner Courtney Dauwalter crushes the competition — men and women

Read more on our partner site Denver7.

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