A 48-year-old mountain biker died after colliding into an enbankment in the first ever fatality in the 18 years of the Sea Otter Classic in Monterrey, CA, SFgate.com reported today.

Mark Reynolds died of head and neck injuries after the crash on the downhill course Saturday at the Laguna Seca Recreation Area. He died at a hospital after being transported from the scene by helicopter.

Reynolds was racing in the amateur category for 40- to 49-year-old men, SFgate.com reported. Reynolds was a software developer and had invented the Dualrailleur Guide, a $125 plastic device that attaches to the front derailleur of a mountain bike to ensure smooth gear shifting under race conditions.