Ran on treadmill today at different gym - Was so much HARDER

Bummer.

Treadmill probably is inaccurate. I've calibrated treadmills before and they can be wayyyyyy offfff.

If it's spot on, you just had a bad day.

I'm sure it wasn't properly calibrated. Even on a bad day, I doubt you'd run that slowly for a tempo.

That happened to me last year but I always carry a couple 2 X 4s with me. Slid them under the back and I was back running my usual 5:04 tempo pace.

..it happens...

Use the bubble level android app to determine if a treadmill is level. I have a cheaper treadmill at home that was way off from level. When it's off just consider it a hill workout. I was able to make my home treadmill level but doubt you could do it at the gym.

Yeah at the local YMCA there are a few treadmills that run way slower and few that run way faster. Always funny when you are on one of the shit ones that has you going 10mph and says 8.5mph and some chunky gal gets on the fast one that opens up next to you and disdainfully throws down a 8.5mph fast walk.

Probably needs oiled. The belt is probably harder to turn and making you work harder than usual.

OP

This happens all the time. I use a GPS watch and run 7:30's on the road. I jump on a treadmill, it's an all out effort to go under 8 min pace for the first two miles. However, I do tend to run faster overall on the treadmill due to not liking it and cranking it up so I can get off of it.

There are only 3 correct answers in the crap posted above. It is either:

1)difference in speed calibration between the two gyms (one could be fast, the other slow, or just one could be off)

2) issue with incline, not level

3) you just had a bad day

The rest of the crap posted is utter nonsense.

I ran 100km/week on a treadmill for a few years.

The way the deck is constructed has something to do with it. Some have, "bounce" like old school wooden indoor tracks. Every stride you feel the recoil of the deck, like it is propelling you up/forward. Then some feel flat - like they are concrete.

could have been the temp and humidity in the gym as well as a miscalibrated dreadmill. If this gym had a humidifer and your normal gym didn't its going to be a lot harder. I've ran at a gym without a humidifier, unlike the ymca I go to, and it was a world of difference. So much easier without humidity.

Treadmill accuracy is all over the place and it makes no difference the brand or the price. I mean horribly all over the place. You can wear a HRM as well as go buy subjective effort and see that as the case. I once ran a 31:00 10k on a Life Fitness Mill and a different brand in the same gym 6:00 pace was rolling. I have had mills where my easy days were allegedly 8:20 pace (Woodways). Pay no attention to treadmill outputs - speed, calories, or anything.

What did you have for breakfast prior to the workout days being compared? Fueling is an important part of the althetic workout that is often disreguarded. Proper nutrition leads to proper condition.

BOO-YAH