Nope. I will try to find out though.

I spin in the winters because the roads are awful where I am. The Keiser M3s are a good spin bike, but calibration will vary between units in the same gym. If you are going to train, be sure to use the exact same bike whenever possible, as that's the only way to gauge progress. The useful metrics *on a relative basis* are watts, kcalories, and rpms (cadence). Distance is useless.

Do NOT try to compare watts on an M3 to watts on a real bike. I can hold 300W on many Keiser M3s for a 60 minute class, but am a lousy cyclist. On a real bike for the same amount of time, I estimate my power to be about 230W.

It is totally going to depend on the calibration of the individual M3 bike as to whether the power is accurate or not. I generally find that the power I see for a 60 minute class is comparable to what Strava estimates for my rides using Garmin data to within +/- 20W or so. Unless Keiser has changed something, none of their bikes show anything representing actual distance. As was posted above from their website, the "distance" counter at the bottom right is actually counting pedal revolutions and 1 "distance" unit = 200 pedal revolutions. They do that not to provide you with useful information, but to give them a way to tell how much use an individual bike has received. When you first start pedaling on the M3 bikes, the number that pops up at the bottom is a cumulative "distance" measurement that is actually how many pedal revolutions the bike has made divided by 200.

There is actually a procedure to recalibrate the gear range on the M3 bikes that I found once on their website. It is something like start to pedal to get it to light up, then pedal backwards until it blinks or something, then raise the gear lever from the very bottom to the very top twice...or something along those lines. Since that procedure is easily available, it is unlikely that the wattage is very accurate from bike to bike. But if you ride the same bike every class, you can at least assume it is probably consistent from workout to workout and base your progress measurments off of it. Keep in mind though, that if you get there early and pedal easy for 10 minutes, your wattage for the class is going to be lower than if you reset it right at the beginning of class and then go hard all class.

Our gym bikes (5 yrs old) feel much much harder than actual bike. It's hard to hold 250 watts at 100rpm, 158 hearrate for 5 minutes on the gym bike. 20 sec interval at 450 watts, 130rpm feels like puking. I visited a high end hotel last month and used their brand new gym bikes and it felt much much easier, 40mphr doing intervals. Went to a spin class and their gym bikes had no data but they felt easier. I think it depends on the gym bike model.

We have a exercise bike at school that says i can do 500+ watts for 20 minutes for the one fitness test that we have to do. I don't think it's too accurate...

Well, the Keiser M3 bikes will register over 1000 watts if you push them, but it only shows 3 digits, so it rolls over. We were just messing around once waiting for class to start, and I can hold about 1100 watts according to those bikes for about 5-10 seconds. I doubt there is much accuracy there, but the Keiser bikes generally seem closer to reality than alot of the other models out there.