You couldn't miss them in their orange tutus running the 26.2 miles from Hopkinton to Boylston Street.
A group of runners from the Fleet Feet store in West Hartford decided this year would be their first Boston Marathon.
"It was electrifying," said Erika Wisniewski of Farmington. "Everyone was on their cow bells, hollering and screaming, giving high fives."
They wore their costumes in solidarity and they say they helped them get through the grueling course.
"We got a lot of tutu cheers," said Wendy Ku of Farmington. "A lot of energy came from wearing the tutus."
It wasn't just the crowd providing the energy. The volunteers were a big help too.
"They're amazing people," said Andy Zyrek of Manchester. "Not only were they handing us water and Gatorade but they were cheering us on."
The group started training in January. They made a promise to run together. They all finished around the 3 hour, 38 minute mark.
It's a marathon these runners say was an amazing experience and worth a return trip next year.
"I'm very proud that we finished," said Ku. "We finished together."