When the Sept. 11 attacks happened, first responders from across New England traveled to New York to help. The NYPD returned the favor after the Boston Marathon Bombings.
Sunday, the Tour De Force ride brought responders from both regions together, a show of solidarity among police officers and their families.
Three hundred cyclist crossed the Boston Marathon finish line after a grueling four-day ride from Ground Zero in New York.
"It's a fun ride, you meet a ton of people," said Northeastern University police officer Bob Maloney. "Very tiring, but I love it and it's a great ride."
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Maloney was one of 60 from the Boston area that joined the ride for the final leg in honor of our local hero.
"Today was dedicated to the memory of Sean Collier," said Michael DePaolis, the executive director of Tour De Force.
Collier, an MIT Police officer, was shot and killed by one of the Boston Marathon bombers during their attempted getaway.
The Tour De Force ride began after the attacks on Sept. 11 as a way to honor the victims. The founder, New York City Police Officer Robert DePaolis, was one of many who helped in the search for survivors.
In the past 13 years, the ride has raised $4 million and helped the families of 200 police officers killed in the line of duty, including Collier's.
The money raised doesn't just go to families in Boston and New York - the fund has helped families across the country.