The Site has so much to offer , i will try to put few screen shots to explain the features of the site.
Once you log in to Nike Plus Site, First Thing you will see is the Dashboard , Where you can see your last 7 runs , and few details like 'Total KM to date' , 'Average Pace to date' etc.
You Can Click on the Run , And You can see your Route Details with KM Splits and the Pace/Elevation info. (i ran this with Nike+ Running App - which uses GPS to track your runs)
|Route Map Details|
it will also Give you the Full analysis of your run starting with 'Time Taken' , 'Total distance' , 'Calories Burned' , 'NikeFueal Earned' , Splits with Avg Pace which is pretty amazing.
You Can also see your Weekly/Monthly Runs in your activities.
The site will also show you the achievements/Personal Records done till date like 'Longest Run' , 'Fastest 5k/10k/HM' , 'Most Calories Burned' etc , which is pretty cool :)
so start using the Nike plus products and site today to store and analyze tour data.