Belen High school's sports teams are both successful on and off the field. Nicknamed The Eagles, the school fields teams in American football, volleyball, soccer and cross country in the fall. In the winter, basketball and wrestling, swim are offered. Spring sports include baseball/softball, golf, tennis and track and field. Year round there is the cheer leading team. BHS has won awards and championships in a variety of sports and other activities. The wrestling team won six straight Class 4A team championships, 2003-2008. 2013,2014 4A, 2015 5A state runners-up. 2016 & 2017 5A State Team Champions. In November 2007, a girls' cross country team comprising only underclassmen won the Class 4A state team title, the first team championship for BHS in that sport. Also the boys cross country team won back to back district championships in 2013 & 2014, and again in 2011 & 2012. Belen boys took 3rd place in the Class 4A state championship in 2003 and 2012 In spring 2008, the softball team won only its second district title in 13 seasons, going 13-2 in District 5-4A games. The baseball team was second in 5-4A and reached the Class 4A state quarterfinals. Both the baseball and softball teams also won two state tournament games. The boys' medley relay team was first at the 2008 Class 4A track and field championships. In fall 2008, the Belen eagle football team finished the season 10-2, won the District 6-4A championship, beat rival Los Lunasfor the first time since 1997, and its only losses were to the state finalist Aztec. In spring 2009, the boys' and girls' basketball teams both reached District 6-4A championship games and played state tournament games at the historic Pit. The baseball team won its first district title since 1995, and the girls' golf team had two players among the top five individuals and was fifth as a team at the state championships. In fall 2009, the boys' and girls' cross country teams both won District 6-4A team titles, with the boys fourth at state and the girls winning the third-place state trophy in Class 4A. The boys' soccer team won 15 matches and went 1-1 in the state tournament, losing 3-2 to the eventual champion Farmington in the state quarter finals. The Belen football team ended 12-1, losing 28-21 to Goddard in the first high school state championship game played within Valencia County in that sport.
Academic competitions
The school has had some success in academic competitions at both the state and national levels. It was third at the New Mexico regional competition and won medals in mathematics, economics, essay, interview, music and language/literature, as well as the gold medal in Super Quiz. The Academic Decathlon team will compete at the state competition in hopes of going to nationals for the first time in six years.