Why is my fixie so very hard to pedal? I recently got a fixed gear bike and I rode it about 5 times. I live in an urban part of the city. I've never rode a fixie before or know much about bikes in general and I knew it would be difficult to ride a fixie since it's only one single gear and you can't stop pedaling.

I did notice how hard it was to pedal at first but after a few blocks I would get so tired I'd have to get off the bike to rest, especially against the wind sometimes. Now when I ride it takes a lot of leg power to go but then I become so tired after riding for a little bit. Is this normal? Does it take getting used to riding a fixed gear? Or is there something wrong with my bike.

I just think it's not right that a bike that a lot of people claim to say that it's the best easy to ride bike can make me unbearably tired after riding it for a few blocks. I just want to know why this is happening and if it's normal.
There's not really enough information in your question to tell for sure what the problem is, so let me just list a few possible explanations that come to mind:


As others have noted, your gear ratio might just be too high for you (since you say it takes a lot of effort to get going).

You can take your fixie to a bike shop and have them swap the rear cog for a bigger one and see if that helps.  While at it, you can also have them check for other problems, too.
Something (like, say, the brakes, if your fixie has them) might be dragging against the wheel(s), slowing you down and making you work hard to keep going.  Or, just possibly, there might be something wrong with your wheel bearings, causing the same effect.

There's an easy way to check for this: just flip your bike upside down, give the pedals a quick spin with your hand, and see how long it takes for the rear wheel to stop spinning.  Then do the same for the front wheel, too.  (You'll have to spin the front wheel by pushing on the spokes directly.  Be careful not to let your fingers get caught between the spokes and the frame while doing so!)

On a well-oiled bike with decent bearings and nothing dragging against anything, the time to stop should be measured in minutes rather than in seconds, and there should be little if any noise.  (That goes especially for a fixie, where you don't even have the ratchet mechanism ticking.)  Certainly, there shouldn't be any grinding or scraping noise, and the wheel should certainly not stop in less than ten seconds.
If you're used to freewheeling bikes, you might be unconsciously trying to slow down your pedaling after you get up to speed.  On a freewheeling bike, that lets you relax and let the bike roll along &mdash; on a fixie, it brakes the bike.

There's no simple fix to that, other than switching back to a freewheeling bike.  If you want to keep riding a fixie, you'll just have to unlearn that habit.  Fortunately, simply with enough practice, that will probably happen naturally.
More generally, you might just be unused to riding a fixie.  It does require a somewhat different set of muscles and riding behaviors than a freewheeling bike, and so you might initially find yourself putting a lot of stress on muscles you're not used to using so hard.  Your description sounds a bit extreme for just plain unfamiliarity, but it certainly might contribute, perhaps together with an excessive gear ratio and/or poor riding position.

Again, this is something that will only be fixed by practice.  After ruling out (or fixing, if necessary) all the other issues, just keep riding regularly and see if it starts feeling any easier.  If yes, you're making progress, and should keep practicing until you can ride your bike comfortably.
Also, make sure to check your riding posture.  A poor posture can make riding a lot harder than it needs to be.  This is true also for freewheeling bikes, but it's particularly true for a fixie, since there you can't just stop pedaling to rest your legs.

In particular, check that your saddle is not too low, as that seems to be a common error.  Ideally, when sitting on the bike with the pedal is at its lowest position (i.e. pointing at 6 o'clock), your knee should be just slightly bent.  (An angle of about 25&deg; short of straight seems to be commonly recommended.)  If your seat is too low, you get less power on the downstroke, and have to expend extra energy to lift your leg on the upstroke, making your legs tire faster.