Yes. It would largely depend on how long you want to walk for. I took this thing on a LONG hike up Mt. Humphreys. It ended up a 10 hour, 3300 ft elevation gain. It worked great to track the route, speed, heart rate, and elevation gain. The battery was nearly dead towards the end, but it worked very well. I would recommed this for walking, yes.
I use it for walking, running, cycling. You can use it with a foot pod or just by itself. I have a foot pod so when on the treadmill I do turn off the GPS. It is a great all-purpose, all-around GPS watch.
It is a good watch for walking. However, I would get a simpler garmin if you're just walking. A garmin 110 or 210 will calculate your distance and calories accurately without all the extra bells and whistles that a garmin 410 offers.
It might work for you but I'd like to suggest something that I find much better, the new fitbit one. For about $60 less you can purchase the fitbit one which will track your steps, miles, floors climbed, calories burned and sleep! The fitbit will also send you emails to motivate and encourage you when you reach certain step/mileage/calorie goals. The 410 has a touch bezel which had a learning curve that took much more time than I had to dedicate. The rechargeable battery in the fitbit one lasts much longer than the 410 also. I hope this was helpful! Good luck.
Yes! I have tested this on predetermined routes on family walks and it is Very accurate!! For biking I like to set it to auto pause under 3 mph for when I stop for breaks and it works awesome, again can't say enough about how great this watch is!