Hi it is really weird but I can do 5K in my gyms tread mill really easy on a good day but have noticed when running for the bus or down my road I simply can not do it! I know the tread mill is very flat and I do run at a number one incline on the matrix gym but what is going on there?
Is it the terrain being not so flat or just me being utterly knackered and running a bit faster or something as it is really weird and I am thinking of just switching to our door running now
Probably a bit of both. Running outdoors is more difficult because there's more resistance when you hit the ground. I find it easier though because I can't cope with the boredom factor of the treadmill.
Outdoor running is the real thing, and so much better on so many levels... go for it and enjoy 
Maybe try doing some runs outside. Try a shorter run then build on that. Good luck 😊
Going for a run and running for a bus are 2 entirely different things. When running you have planned, got your kit on, desided your distance, done your warm up etc. Running for a bus you go -" got to catch that bus", start running in normal clothes and footwear, miss out the warmup. I can do 5k, 10k, flat, hills. The other week I wanted to nip along our drive before postie drove out - knackered and it's only about 20metres. You will be great running outdoors, you'll love it. So much to distract you and changes of terrain. Go have a happy run.
I’m with the others - outdoors is very different but much better after you adapt. 😊 Also, “proper” running, where you’ve warmed up, wearing the kit, and are in the mind set, is very different from a sudden sprint for the bus (or any other reason.). Not surprising that if you suddenly zoom off at high speed your body screams “Whoa” 😱.
If you can, move at least 1 run a week outdoors. Maybe run without worrying about time or distance, just find a nice park or path and jog along for as long as you feel able. Then take that as a base, and use that weekly run to improve on it gradually. I would extend distance first and not push speed, but we are all different. See what works for you. 🤔😳 And cross your fingers that this blustery, stormy weather is on its way out. We’ll all be glad when that happens - and running better too! 👍🎉 Good luck.
I’m with everyone else. I use the gym occasionally and find running on the treadmill so dull - I was forced (long story) to run 10k+ on it as part of my HM plan a couple of weeks ago. 😳
Running outdoors is fabulous. A natural temperature (just dress for it), things to look at, fresh air - the list goes on.
Also the fact you had difficulty running for the bus is isn’t connected to not being able to run outdoors. I can run comfortably for well over an hour or two, but I struggle running to my car!
Enjoy your transition to running outdoors. I’m sure you’ll love it! 😀
Yes... step outside! The biggest difference is pacing, a treadmill is great for learning a pace once you’re running outdoors, but stepping outside when used to the treadmill takes some getting used to. You’ll get there of course... maybe you won’t even need that bus!
I was thinking this as being a bicycle courier and then comparing that to a stationary elliptical indoor bike are very much two different things
5k continuous run! Tadaa!!! 
First Postgrad Run - 5k!!
Recovery 5k run...made a few mistakes 🤔
Funny how 5k seems a short run now!
