Your budget is going to limit your choices. But that聮s probably OK. Get a bike, get some experience with it, and as time/budget/interest allows, move up the cycling food chain.
Giant FCR 3W

You聮re probably looking at a hybrid. Marin聮s Muirwoods ($429; marinbikes.com), for instance, offers a fairly fast ride in a bike that聮s based on a mountain-bike design but without the suspension components that add weight. It has a triple chainring that makes hills much easier, and a comfortable geometry. It聮s not a racer by any means, but a bike that can move along. Giant聮s FCR 3W ($480; giant-bicycle.com) has very similar geometry and specs, with maybe a little zoomier seat position for better speed. I think Giant bikes offer excellent value. Scott聮s Sub 30 ($560; scottusa.com) is zoomier yet, with a nicely low handlebar position that lets you get into a wind-cheating position even though it has 聯straight” handlebars.
It聮s difficult to find a true road bike (with drop handlebars and skinnier tires) for under $500. K2聮s Mach 2 is selling for $700 at REI, and that is one of the better buys around. It has an aero road-bike position, a light aluminum frame, and a reliable Shimano/FSA drive train. And its well worth upgrading as time goes along with better wheels, tires, and so on. You can also troll around for something used; a bike that聮s a year or two old will often lose 40 percent of its new value.
One problem with bicycling is that it聮s pretty equipment-intensive. You will, of course, need a helmet (Giro Kaya, $30; giro.com), gloves (Pearl Izumi Gel Lite Tour, $20; pearlizumi.com), and glasses (Performance Vector Multi-Lens, $50; performancebike.com). Don聮t forget as well a pump (Topeak Peak Blaster; topeak.com), tube patch kit and levers ($8), and seat bag (Cannondale Fast Bag, $20; cannondale.com). Cycling-specific clothing is nice, as well聴look for house-brand items from REI, Performance, or Bike Nashbar. It can all add up when you聮re just starting out.
Hope that helps, and happy riding!
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