Sorry but the only good grizz tracks that I have ever seen still had bears standing in them. Same goes for black bears but he was running in grass. So here is a little help for you.
Oop's, correction! In Elim I followed a dual set going both ways along the trail to Next Creek. It was a fairly rocky soil and diffenently grizz as there are no blacks over there. Just about to Next Creek the dog light up like a flare and I was sure that we had caught up with the maker of the tracks. What a relief when we rounded the bend and there was a young moose. Better than a bear in a treeless terrain.
Grizzly Bear Tracks - Ursus arctos horribilis
7 in. L X 5 in. W
11 in. L X 6 in. W
Black Bear - Ursus americanus
5 in. L X 5 in. W
7 in L X 5 in. W