There was recently an unconfirmed grizzly bear sighting at the Train Wreck trail, south of Function Junction. Black bears are more common in Whistler, but be aware that there are grizzly bears in the area.
Learn how to distinguish between black bears and grizzly bears: http://ow.ly/qDTU30ep7ma
With any bears, it is best to hike in groups and stay alert while on trails. If you encounter a bear, give it space and a clear exit, speak calmly, and back away slowly.
Report grizzly bear sightings in the Whistler area by phoning the BC Conservation Officer Service (COS) at 1-877-952-7277 or 604-905-BEAR. Whistler Conservation Officers are notified daily about sightings and immediately in emergencies.