And I like it. Yesterday I used the website to plan a 5K walk around the neighborhood, and then used the phone app to keep me on my course. 3.12 miles in 1.12 minutes. Today I set off for just a stroll, and used just the app -- 1.49 miles in 32:31.
Check it out at http://www.mapmywalk.com. So far I'm using the free version, may upgrade to ditch the ads and get a few more features.
They also have sites and apps for fitness, run, ride, and hike