[macNchz]

Accurate real time pacing information can be useful during races, when it’s easy to get caught up in the pace of the crowd and lose track of the muscle memory for your race pace.

It’s also nice when you want to do any sort of interval training without actually going to a track.

Having accurate overall distances is less important, but is useful if you’re training for a specific distance and want to run some time trials without using a track or measured course.

[verst]

I pace many half marathon and marathon races. Usually what I need for that is: instantaneous pace, average pace, and lap distance.

I tend to plan my pacing for equal effort, so each lap pace is adjusted for elevation such that in the end the overall pace is just slightly faster than what is needed for goal pace.

Needless to say, I use my Garmin Forerunner 945 for this.

If anyone is running the Seattle Marathon, I'll be there pacing :)