The school's boys' and girls' cross-country teams have achieved success in the past few decades. In 2008 the boys' and girls' cross country teams won the Skyland Conference Raritan Division, the boys finishing 9-0 and the girls 7-0. Also in 2008 Julia Mark and Emma Giantisco placed 1st and 3rd at the Group II State Meet and 9th and 15th at the Meet of Champions. In 2009 under former Del Val grad and former boys' assistant coach for the past few years, Dave Giantisco, the Boys' XC Team went undefeated 10-0 bringing its dual meet streak to 20-0. The team won the CJ Group II title for the first time since 1986, placed 2nd at the Group II State Meet and placed 12th at the Meet of Champs. This was the first time the Del Val Boys' team made MoCs since 1975. In 2010, the team extended their dual meet streak to 26-0, won the CJ Group II title again, and took 3rd at Groups, qualifying them for MoCs for back to back years.