treadmill reps

The only theory I can come up with for you is that it's either physical or mental.

Physical - maybe you're not as comfortable on the treadmill, so you tighten up and can't "flow" as well as you do on the track... making it actually more difficult to run fast.

Or, if there is no airflow, there could be heat buildup that's affecting you.

Mental - maybe you just don't like the treadmill, bored, no workout partners, etc. that's making it seem harder.

I run a lot on the treadmill, and I've found that when I set it at 1.5% incline, it matches my outdoor paces/efforts/heart rates pretty well. All the way from 9:00/mi jogs up to 5:00/mi reps.

good point about tightening up. I only use the treadmill when there's a lot of snow, so I;m not used to it. I should add that neither of these paces is particularly challenging for me, just a moderate workout.

Quite a few years ago, I calibrated a half dozen treadmiles and NONE of them were accurate except one, a trotter that cost $5000.

I got a $300 treadmill instead and have been quite happy with it

I also find that my pace on the treadmill is much slower than outside, so I just run by equivalent time when using the treadmill.

for me it depends on the treadmill, alot of treadmills feel really fast 7:00 pace feels like 6:30 etc, occasionally Ill come across a treadmill that feels normal speed. If the pace feels too easy, then I crank the treadmill up more, and if it feels fast, then I back the treadmill off, and like the other poster said, incline can generally make any workout tougher.

Dont depend on treadmills for accuracy. Even the best ones tend to be off at times. I wear a heart rate monitor while on a treadmill and run mostly faster tempo runs or uphill slogs for an hour or more. I havent really gotten into intervals yet due to a fear of falling and not knowing how to program my gym treadmill for 1 min. splits. However, the idea is intriguing.

Sometimes treadmills are set at an incline and it's slight enough that you don't notice by just looking at it but you can still feal it when you're running.

My stride length and cadence on my TM is pretty much the same as on the flats outside,so, even though I've calibrated the TM, I use my Garmin footpod to generate all the numbers I need. I trust the pod more than the TM.

I started doing treadmill reps a month ago due to snow, and am now using them for more moderate excuses like howling gales outside. I'm usually doing long reps (2000m down to 800m) with rests of 2min or more, with slightly increasing paces. I program a manual run at the pace I want (e.g. for 80 sec laps, that's about 18km/h) and a bit longer than I want, then stop when the distance gets to the rep length. Then I stop, program another run (takes 30sec or so), and use it for the next rep.

The built-in interval programs don't really seem programmable enough.

I really like these sessions now - at least for paces between 5k and tempo. You can precisely control the pace, and precisely step it up a bit the next time you do the session - or lengthen a rep or whatever. This kind of careful progression is harder to achieve outdoors, or in a group.

different results wrote:

I run a lot on the treadmill, and I've found that when I set it at 1.5% incline, it matches my outdoor paces/efforts/heart rates pretty well. All the way from 9:00/mi jogs up to 5:00/mi reps.

I set my treadmill at 15% and find I run a lot slower than outside.

must be the heat wrote:

I set my treadmill at 15% and find I run a lot slower than outside.

Try putting a decimal in there, and you'll probably find it a bit easier.

TMill is always easier for me.