It was a special marathon for Tews, as well as numerous more than 16,000 female participants in the race.
As CBS2's Don Dahler reported, in 1967, Switzer became the first woman to officially cross the finish line of the Boston Marathon. In her later races, no subterfuge was necessary.
It was the Boston Marathon yesterday, and it marks 50 years since an incredible event for runners and women everywhere. New records were set for both wheelchair races, with Swiss racer Marcel Hug taking home the win for the men at 1:18:04, and Manuela Schar, also of Switzerland, winning for the women with a time of 1:28:17.
Jordan Hasey, with a time of two hours, 23 minutes, posted the fastest run by American woman in her first career marathon, beating the previous mark by almost three minutes.
San Diego distance-running veteran Meb Keflezighi finished 13th in the Boston Marathon Monday as he prepares for retirement, but he left the door open for a future appearance at the iconic footrace. "It changed my life and it changed millions of women's lives".
While it's usually about that 26.2 mile journey, for that South Bend woman, it's all about the number 261 and honoring a tradition that started exactly 50 years ago. I was just kind of talking to her out there the whole time.
"The crowd got me through the finish line", he said.More news: Previewing the Essex Vase greyhound racing extravaganza
The 70-year-old finished with a race time of 4:44:31 and an average mile of 10:51.
"People were very, very leery at any arduous activity for women because they thought that it would turn her into a man", she said.
"He grabbed me... threw me back and said, "get the hell out of my race and give me those numbers"," she recalled. "She has groups formed in different towns to promote running for females, and we've talked about doing that in our area".
Hasay said she is likely not finished competing on the track, but will probably target a fall marathon next.
Even Boston Police Commissioner William Evans was back on the course this year for the first time since the bombings in 2013.
Detective Amanda Brezniak ran her first marathon on Monday. He'll create the memorial markers on Boylston Street where bombs killed three spectators and wounded more than 260 others.