Black bear kills teen runner at Alaskan trail race

The 16-year-old unidentified runner was pronounced dead on the scene several hundred metres off the main trail used for the race course

Bear briefly interrupts road race darting across the course

A bear crossed the race course during this Colorado Springs, Colo.-based 10-miler surprising many of the oncoming participants

Family of black bears provides mid-race adrenaline rush for runners

A black bear and her two cubs emerged from the woods during the running portion of a triathlon in Alaska last weekend.

All bear