Collegiate College of St. Benilde Maro has coached the football team of the
College of Saint Benilde which plays at the
NCAA Football Championship. He led the collegiate team to its first NCAA title at the 2009–10 season ending
San Beda College eight-year championship winning streak.
Club Philippine Navy During the off-season of the
United Football League in 2011, Marlon Maro was hired as head coach of
Philippine Navy. Maro brought in civilian players, with some coming from
San Beda College in an effort to boost the squad.
Davao Aguilas Maro was hired in an interim basis in September 2017 to serve as head coach of the
Davao Aguilas F.C. replacing
Gary Phillips. His first match leading the Davao Aguilas was the 1–1 draw with
Ceres-Negros F.C. In May 2018, Maro tendered his resignation and was replaced by his assistant, Melchor Anzures.
Philippine national teams Men's national team Maro took charge of a
Philippines national football team that participated at the
2017 CTFA International Tournament in
Taiwan. Maro's staff for the tournament to be held in December 2017 consists of team manager,
Jefferson Cheng and assistant coach Randolfo Clarino, Marlon Piñero, Ronoel Garfin, and Ramonito Carreon. The
Philippine Football Federation (PFF) planned to send the
U22 national team which Maro is also head coach but decided to add a select number of senior players from
Davao Aguilas and
Stallion Laguna. The lineup for the national team to be guided by Maro was already assembled by the PFF in November 2017 when the national team under regular coach Dooley and team manager
Dan Palami was in Nepal for the
2019 AFC Asian Cup qualifiers. The national team under his helm won 3–1 over
Laos, but later lost 0–3 to host
Chinese Taipei, and 0–1 to
Timor-Leste.
Women's national team Maro coached the
Philippine women's national team from 2001 to 2007. On July 10, 2021, the
Philippine Football Federation announced that they have appointed Maro to lead the national team again starting at the
2022 AFC Women's Asian Cup qualifiers. This was due to a need for a full-time coach with Maro's predecessor
Marnelli Dimzon also being the coach of
Far Eastern University's
women's team. Maro would help the Philippines qualify for the
2022 AFC Women's Asian Cup. After the successful qualifiers stint he was appointed as head of the PFF Coaching Education department in October 2021.
Alen Stajčić succeeded Maro.
U18 and U23 youth national teams At the
2013 Kanga Cup, under the club name Carranz F.C., the Philippine U18 team, led by Maro, won the U18 male division of the youth tournament beating Capital Football Senior NTC in the finals; 1–0. For the under-23 national team's stint at the
2015 Southeast Asian Games, Maro was appointed head coach to lead the team, taking over from Australian
Jimmy Fraser, as head coach.
Other involvements in football Along with
Aris Caslib, Maro organized the
Ang Liga, an annual inter-collegiate football tournament in 2003. ==Honours==