By September 2013 , Altra Footwear was at 300 percent annual growth rate and opening in 25 to 30 new markets .
Altra first entered the North American market in 2011 and won the Runner 's World Magazine 's 2012 Editor 's Choice Best Debut award .
By September 2013 , Altra   was at 300 percent annual growth rate and opening in 25 to 30 new markets .
Altra first entered the North American market in 2011 and won the Runner 's World Magazine 's 2012 Editor 's Choice Best Debut award .