Marc Mangiacotti joined the Brown track & field staff as an assistant sprints & hurdles coach in October 2010 and was promoted to Associate Head Coach in January of 2012. He came to Brown after spending six seasons at Wheaton College (MA).

The sprinters and hurdlers had a lot success in Mangiacotti's first season at Brown University. Freshman John Spooney became the "fastest man in the Ivy League" after capturing the 100m and 200m at the Heptagonal Championships in May. During the indoor season the men broke a 31-year-old school record in the 4 x 400m relay. Outdoors, the men's and women's sprints squad were a key component in the team's second straight top three finish at the Heptagonal Championships. The sprints squad's youth and depth will continue to help the track & field team's goal of continued success at the conference, regional, and national level.

At Wheaton College, Mangiacotti's athletes tallied eight NCAA National Champions and 53 All-America accolades. The men's 4 x 100m and 4 x 400m relays were the 2010 DIII National Champions, and his athletes established 31 school record performances in the sprints, hurdles, and relay events. In 2008, Mangiacotti was voted the U.S. Track & Field and Cross Country Coaches Association (USTFCCCA) Division III national and regional women's assistant coach of the year.

Mangiacotti returned north following five years in Texas, where he spent three seasons as the assistant cross country and track & field coach at the University of Houston. At the University of Houston under head coach Leroy Burrell, who is a former world record holder in the 100-meter dash, Mangiacotti was involved in all facets of running a Division I cross country and track & field program. Alongside Burrell, Mangiacotti devised daily workouts while having a hand in recruiting, meet management, team budget and team travel. While coaching at Houston, he also earned a master's degree in sports administration in the spring of 2002. He was mentored by legendary coaches Mike Takaha and Tom Tellez.

Prior to moving to Houston, Mangiacotti began his coaching career at nearby Bridgewater State College. A USA Track & Field (USATF) Level I and II certified coach in sprints, hurdles, relays, jumps and combined events, Mangiacotti assisted Bridgewater State in both cross country and track & field during the 1998-99 season. With the Bears, he worked primarily with the runners and jumpers.

A 1998 graduate of Bridgewater State, Mangiacotti earned a dual bachelor's degree in elementary and physical education. As an undergraduate, he was a four-year member of the cross country squad and indoor and outdoor track & field teams. Mangiacotti garnered All-New England laurels in track & field his senior season and was also named to multiple Massachusetts State Collegiate Athletic Conference (MASCAC) All-Conference teams in track & field and cross country.