“Boston is like the Holy Grail of running events,” Sinema told ABC News. “I never thought I would ever find my toe at the starting line at Boston.”
Their House colleague, Rep. Scott Peters (D-Calif.), wished them luck on Twitter Sunday evening.
Sinema, 37, has already completed eight marathons, and is running in Boston in honor of Martin Richard, the eight-year-old boy killed in last year’s bombings on April 15.
The congresswoman told ABC she has already raised $20,000 for the charity in Richard’s name, Team MR8. His parents chose Sinema and a friend to compete for their son.
The race will be the first marathon for Kennedy, 33, who is running with his wife. He’s running for One Fund, a group established to help the victims and survivors of last year’s bombings.
Security in Boston remained tight Monday as the second-largest field in race history gets ready to begin the 26.2-mile marathon.
More than 35,600 people are registered to run the race.