Despite the fact that we have not seen one all-terrain e-bike on trails that the rider actually bought (just test bikes), we’ve heard that a few local mountain bike racing organizations are considering adding classes for them. The only one confirmed is an e-bike event at the 2016 Sea Otter Classic at Laguna Seca in the spring. But there has been road racing available all along. SoCal Motor Bicycle Racing (https://www.facebook.com/groups/SocalMotorBicycleRacing) is primarily for gas-powered bicycles, but electric bikes are allowed, and in some cases have done quite well. Give the page a look if you are interested.