If you have the newest version of the google toolbar you can enter your mileage and time straight from the browser window if you download the LogYourRun custom button for your google toolbar. The button will be added to your google toolbar as in the following picture:

By entering mileage and time in the following format, you can go straight to the enter data section of LogYourRun and all you have to do is save the entry. This does require that you are logged in to LogYourRun.com. The easiest way is to keep yourself logged in by checking the "remember me" button when you log in.

This is the formats that are recognized by LogYourRun:

xx.xx miles, HH:MM:SS
xx miles, MM:SS
xx miles, MMM:SS

Miles can be entered as 2.0 or just 2. Time can be entered as hours:minutes:seconds or as minutes:seconds, where minutes can exceed 60 minutes if needed.