More recent. 2016. Forest Service cop was bombing a descent, came around a corner and apparently hit a grizzly in the trail. Bear attacks and kills him.
Officials: West Glacier Cyclist Collided with Bear Before Fatal Attack - Flathead Beacon
From a later story about the incident:
"According to the report, Treat was mountain biking with a friend on the “Outer Trail” of the Green Gate Trails in the Flathead National Forest. Between 1:30 and 2 p.m., Treat collided with a grizzly bear with his bike at a high rate of speed after rounding a blind curve on the trail.
Treat had access to the trails system from his house and was reported to jog the trails with his wife almost every morning. Treat mountain biked on the trails four to six times a week. Treat’s wife, Somer, described him as competitive and said he often tried to beat his previous times as he traveled the route.
Treat was estimated to be traveling at about 20-25 miles per hour, giving him only 1-2 seconds after rounding the corner to see the bear. The investigation found no signs of skidding or evasive steering, indicating Treat did not immediately see the bear and hit him at full speed.
The collision hurtled Treat into and then over the handlebars of his bike and either onto or over the bear. The investigation indicated the impact caused Treat to break both of his wrists and his left scapula as he tried to break his fall with his hands.
The riding companion was reportedly 20 to 25 yards behind Treat when the incident occurred. The companion reported hearing the impact and heard the bear vocalize and make a sound “like it was hurt.”
The companion rode around the curve and saw the bear standing over Treat, who was laying on the trail. The bear was described as “very big, brownish-black in color, lighter than black” with its hair “bristled up.” The companion reported waiting about 30 seconds as he tried to figure out what to do. Neither Treat nor his companion had bear spray, firearms or cellphones with them.
The companion said the bear was “intent and focused on Mr. Treat,” and did not turn to look at the companion when he came into sight. The companion decided to turn around and head back up the trail the way they came to seek help because he did not feel comfortable trying to get the bear off of Treat."