They showed up by the hundreds over the weekend, in defiance of the summer storms that poured on the Twin Cities. They slept in tents and walked 60 miles.
And by the end of it all, they had raised well over $1 million.
It was the 2015 Susan G. Komen Twin Cities 3-Day, an annual charity walk that brings together volunteers and donors to raise money for breast cancer research and education.
According to a blog post from the organization, it was a rousing success, despite the inclement weather Saturday night.
Some 550 people showed up to join in the march, which began on Friday at the Southdale Center in Edina and snaked through Minneapolis and the suburbs before finishing on Sunday at Harriet Island in St. Paul.
In order to participate, walkers must agree to raise at least $2,300 in donations prior to the event.
The math shows they went above and beyond – the organization says the Twin Cities 3-Day raised $1.6 million this weekend.
That's several hundred thousand dollars more than what would have been raised had each of the 500 participants stuck with just the minimum.
The event first started in 2003 as the Breast Cancer 3-Day, according to a news release, which says Komen has raised and invested billions in breast cancer research since its founding in 1982.
The next 3-Day march will take place in Seattle on Sept. 18.