In my opinion, this MotionBased stuff is the coolest analytic web based software on the market. You need a plug in, but you can view every bit of information about any outdoor activity captured by your GPS.

The Map Player allows you to watch the race being run again, at whatever speed you want, and watch all of the data change as the bouncing ball follows your path on the map!

Here's what MB have to say about their application.

MotionBased.com

Changing The Way We Train
While GPS technology has been available for many years to outdoor enthusiasts, few applications exist on the market where GPS data is effectively harnessed and analyzed for fitness and training.

Performance analysis, online mapping, and route sharing provided by MotionBased will not only make GPS devices more valuable but will change the way athletes train.

At a high-level, you can analyze and map the following metrics for an activity:

Time	Distance	Speed
Pace	Elevation	Grade
Heart Rate	Cadence	Weather