A lot of runners use a majority of the features of their watches, but there are some running watches so packed with features that it's unlikely that too many runners would use all of them. Still, it's enjoyable to have so many options for features that might be fun to use, or that could add new insight for a runner who's trying to do their best, get stronger, or extend their times or abilities. With all the options available, there are plenty of features for runners to choose from when it comes to the best GPS running watches.