Take in the sights on your bike! Photo: madnzany on Flickr

One of the best ways to see a city you're visiting is to go for a bike ride. It's scenic and you get a workout (not to mention, it's totally eco-friendly!). There's just one problem -- most bikes don't exactly fit in a carry-on, and even if you're driving to your destination, it can be difficult to pack bikes for the whole family and still bring the luggage. And the family.

However, if you're going to one of 157 cities in the U.S. or Canada, there's a simple solution -- RentaBikeNow.com. You simply go online, select your destination, reserve the bike of your choice (mountain, cruiser or road bike, height, etc.), pick it up on the proper day, and ride!

Prices and availability vary depending on location. For example, in Tampa, Florida, you can rent a bike for an hour ($10), four hours ($30-$40), a full day ($60-$65) or for a whole week ($150-$230). In San Francisco the prices are a bit lower, but there are fewer bikes available, and your only choices are to pay by the hour or by the day.

The next time you travel, maybe you should worry less about what kind of gym your hotel has, and focus more on finding the nearest bike rental shop!