BOMB was started in 1997 by a couple of guys in Southern California who had a love for the sport of mountain biking and a love for God. In an effort to combine their two passions, Believers on Mountain Bikes was formed. BOMB in Southern California has grown from two riders to over fifty. In 1999 the first outside chapter of BOMB was formed with many others following right behind. Boston BOMB was formed in June of 2001.