I'm doing it on the treadmill because that's my best option right now. I use a 1.5 incline to simulate an outdoor terrain. It's working fine for me.

I`m in the midst of doing C25K on my treadmill ... it`s just not practical to take my 5-1/2 year old and 4 year old boys out all the time, especially because the older one doesn't want to ride in the jogging stroller (understandably!). I've been setting the incline up a bit, usually 1 is fine, and have noticed that I'm pretty much at the same speed on the rare occasion that I get to run without the boys.

Getting moving is a victory in and of itself Treadmill running will not fully prepare you to run an outdoor 5K if that's your goal - outdoor running has its own quirks that you just have to train with to train for - but that doesn't mean you're cheating itself.


One thing you might want to try if you can is 2 runs on the treadmill and then a third outside if you can - gets the best of both worlds

I'm doing the C25K treadmill programme during the weekday evenings & have a route I do on a Sunday morning outdoors to get used to outside running & judging my pace - subject to weather! I'd like to start doing a run in the mornings most days, but getting up earlier is proving challanging & with the weather about to change I'll probably stick to evening gym sessions for the time being.

I jog outside because I dont have a tredmil. To me after running on my street Ive had pains in one of my legs because the ground is not flat and is tilted a little. So what I'm saying is to avoid injury run on that tredmil baby!

For me, Ive tried to run outside in the beginning of the c25k program over the summer. Was progressing a bit along the way up until about week 5. Seemed to struggle alot from then on. Had a couple non running related injuries too so that made it even worse. Recently started back at my local YMCA and have been running on a treadmill and I must say, treadmill is way different than outdoors. Was only a handful of workouts and I was able to run 5k. i repeatedly was running 5k's on the treadmill then recently went back outside on a nice day to run and it didnt bode well for me. However, I think for me I have a hard time trying to pace myself. Treadmills obviously maintain your pace and you can stay wherever you set it at. Plus, you can never duplicate running outside with all the incline changes etc, unless your using a high end treadmill. Nevertheless, those have been my experiences thus far. Good Luck!

With a two month old it is too difficult for me to get out in the am to run. By the time I am home from work it's dark outside. No way am I going to run outside in NYC at night. I only run outside about 1 day a week when my workout falls on a weekend. I actually find it easier to run outside. I get more distracted versus when I'm on the treadmill waiting for the ticking seconds to pass.

I tried one of the workouts on the treadmill and it did feel much easier than running outside in the park. If weather keeps me indoors, I'll probably follow the tip about the incline. Thanks!

As others have said, on treadmill we keep our pace consistent. I thought it would be easier, but when I try to stay at that faster it really is a challenge. I think you are good going either way as long as you are moving. Best of Luck to uou and keep us posted.