C25K is amazing! I started that last year and will be running a half marathon in May...this from a girl who never ever thought she could run ONE mile.

I think if you've got an interest in running, you should check it out! As others have mentioned, getting actual running shoes - and being fitted for them at a running store - is really important. Also, take it sloooooooooooooow. Your body/joints are going to need to adjust to this activity, so go slow. That means don't run too much all at once, and also speed wise, take it slow. I often felt like people walked faster than I was running in the beginning, but that's okay! I'm still a slow runner today, but I'm faster than when I started :)

Also, if you're really worried about knee issues, you can build up some endurance by running in water.

Good luck in your running adventures!

I started running around 250. I ran my first half marathon around 225. In a few months I'll be starting training for a full marathon.

I'm pretty close to your size and I'm trying to start now.

We were in the mountains this weekend and tried to run on the treadmill and I thought my lungs might explode! I live at about 5300 feet and trying to run at over 10000 feet was not the best idea ever!

This is great info

Well I started the C25K and I made it out alive!!!
I do it again tomorrow. Thanks for suggesting it, guys! :D

I started with the couch 2 5k at 301 pounds I am currently 268 and now training for a half marathon. like the pp have stated you dont know untill you give it a go. I could barely do 30 seconds in november and now i am up up to 7 minutes jogging and 3 minutes walking and can do that for an hour and 40 monutes :) its really amazing what our bodies are capable of.