The Mizuno Wave Ronin 4: quick, light, awesome. Slip these shoes on and you'll understand what we mean. These super flexible racers are built for speed, with a lightly padded midsole that forms to your foot, bending at toe off and snapping back into place with plenty of energy. The soft breathable upper has a slipper-like fit that caresses your foot as you fly down the road.

The RC 1400 is a PR breaking shoe waiting to be released. This lightweight, low-to-the ground neutral racer is packed with performance. The REVlite midsole provides a responsive ride and a quick foot strike. The RC 1400 is ideal for race day performance or speed workouts.

The New Balance RC1600 is a fast flat with an extra dose of style. Colorful, lightweight overlays wrap the upper for a secure fit, and the Revlite midsole is springy and protective. This shoe is light enough for speed work and racing, and has enough cushioning underfoot for a marathon. Available June 2012.

The New Balance RC5000 tops the charts in ultra light racing flats. Designed for speed work and racing up to 10,000 meters, this shoe includes a thin, airy midsole with strategically placed rubber underfoot for lightweight traction. The streamlined upper has a barely-there feel and a snug race day fit. In a package weighting just over 3 ounces, the RC5000 is one extreme performance tool. Available June 2012.

The Newton MV2 is a great 5k/10K racer, which includes springy forefoot lugs to help propel you during toe-off. The low heel brings your feet level to the ground, encouraging midfoot and forefoot striking. Add to that a light, breathable upper and you've got one speedy racing shoe.

The Newton MV2 is a great 5k/10K racer, which includes springy forefoot lugs to help propel you during toe-off. The low heel brings your feet level to the ground, encouraging midfoot and forefoot striking. Add to that a light, breathable upper and you've got one speedy racing shoe.

Past meets present with the Nike Lunar Montreal: a lightweight racer and trainer that will have your feet flying. The upper uses soft knit fabric reminiscent of the original Lunar Trainer, and is finished with a thin mesh for a fast, light feel. The midsole is snappy and responsive; a perfect choice for races and tempo runs.

Due to popular demand, Nike brings back the original Lunaracer+ as the update to the Lunaracer+2. The LunaRacer+ delivers more cushioning than should be possible in this light a shoe. This is a great shoe for speedwork and race days.

Due to popular demand, Nike brings back the original Lunaracer+ as the update to the Lunaracer+2. The LunaRacer+ delivers more cushioning than should be possible in this light a shoe. This is a great shoe for speedwork and race days.

Due to popular demand, Nike brings back the original Lunaracer+ as the update to the Lunaracer+2. The LunaRacer+ delivers more cushioning than should be possible in this light a shoe. This is a great shoe for speedwork and race days.

Due to popular demand, Nike brings back the original Lunaracer+ as the update to the Lunaracer+2. The LunaRacer+ delivers more cushioning than should be possible in this light a shoe. This is a great shoe for speedwork and race days.

When it comes to race day performance, the Pearl Izumi isoTransition is a top-notch performer. The quick-pull lacing system makes this racer easy to slip on. The seamless upper allows you to wear this shoe barefoot and offers drainage holes in the midsole to release fluid. Serious runners will love the low-to-the ground, responsive ride quality the isoTransition offers. The isoTransition makes a great triathlon or road-racing shoe.

Born from a lightweight trainer, the Pearl Izumi Streak II is now a legitimate racing shoe. This performance-oriented shoe keeps you turning and burning thanks to a low-profile midsole that provides plenty of energy return to the runner. The lightweight, air-mesh upper keeps your feet plenty cool when things heat up. The Streak II offers enough cushioning to cover race distances between 5k and marathon.

Lead the pack in the Saucony Grid Type A5. This racing flat is lighter than ever with super thin overlays that hug your feet without heating them up. A thin, flexible midsole provides great feel for the ground while still protecting you from the sting of the pavement. Lace up, get out, and get ahead. 

Lead the pack in the Saucony Grid Type A5. This racing flat is lighter than ever with super thin overlays that hug your feet without heating them up. A thin, flexible midsole provides great feel for the ground while still protecting you from the sting of the pavement. Lace up, get out, and get ahead. 

Lead the pack in the Saucony Grid Type A5. This racing flat is lighter than ever with super thin overlays that hug your feet without heating them up. A thin, flexible midsole provides great feel for the ground while still protecting you from the sting of the pavement. Lace up, get out, and get ahead.

When it comes to unmatched performance, look no further than the Zoot Ultra Race 3.0. The supple upper material and lace system keeps the runners mid-foot secure and relaxed. This lightweight, neutral shoe allows for faster leg turnover and a smooth responsive midsole that’s best suited for a speedy half or full-marathon. Drainage ports allow for fluids to escape.

The Musha 4 delivers even greater performance with an updated midsole and snazzy new upper. Its minimal yet stable ride receives extra bounce with the addition of an Ap+ midsole for responsive cushioning, and soft overlays provide a more supportive fit that stays comfortable for miles on end. Now available in a true women's B width for a closer, more comfortable fit.

The Saucony Fastwitch 5 is a versatile race shoe with support for mild to moderate over-pronation. Light, open mesh lets feet breathe and a springy midsole gives maximum rebound to keep you bounding ahead of the pack. This shoe will keep you feeling fast and light, whether you're running a 5k or a marathon.

The Saucony Fastwitch 5 is a versatile race shoe with support for mild to moderate over-pronation. Light, open mesh lets feet breathe and a springy midsole gives maximum rebound to keep you bounding ahead of the pack. This shoe will keep you feeling fast and light, whether you're running a 5k or a marathon.

The Saucony Fastwitch 5 is a versatile race shoe with support for mild to moderate over-pronation. Light, open mesh lets feet breathe and a springy midsole gives maximum rebound to keep you bounding ahead of the pack. This shoe will keep you feeling fast and light, whether you're running a 5k or a marathon.

When it comes to triathlon competition, Zoot knows best and delivers with the Ultra Ovwa.  Zoot incorporates trusted technology like a carbon fiber shank for a powerful toe-off and a quick-lace pull system for easy entry when transitioning from bike to running. The Zoot Ovwa makes for a great racing shoe or long tempo trainer for runners that over-pronate.