For the 2007 season, Ragan moved to the Nextel Cup Series as the driver of the number 6 Roush Fenway Racing Ford Fusion. He also participated for the NASCAR Rookie of the Year standings in both Nextel Cup and Busch Series, where he finished second in the Nextel Cup Series, while winning the award in the Busch Series. During the Cup season, Ragan recorded two top-five finishes, with one being in the 2007 Daytona 500, and three top-tens, finishing 23rd in the point standings. During the Busch Series season, he earned two pole positions, four Top 5's, and nine Top 10's, while finishing fifth in the final point standings. Also in 2007, he participated in one ARCA Racing Series event, where he finished in the fourth position.