Exit Cycling is to fit bikes what Lucy is to anthropologists: the missing link. All the fit bikes aforementioned owe something to this bike, and Exit is still going strong.

South African Kyle Buckingham was the top age grouper at the 2013 GoPro Ironman World Championships in 8:37:26 and that allowed him to be 16th overall. We had a chat with him about his race and moving on to the next step.

We review three Specialized road tires – the S-Works Turbo, Turbo Pro, and Roubaix Pro. With new rubber compounds and puncture breakers, the big S is making big claims.

Our series on fit bikes continues with the incomparable Guru. The 2104 edition is without peer. If the original DFU was way ahead of its time, this new version is just as revolutionary.

We call this feature The Weekend Box as it allows us to add other interesting items and not just races, and this weekend it is indeed the other items that dominate this edition.

Brit Stuart Hayes and American Alicia Kaye took the wins at the 2013 Life Time Fitness Triathlon finale in Oceanside, California, but it was Cam Dye and Alicia Kaye who came home with the big pay day.

We update and expand our guide to cassette and freehub spacers for 2013. SRAM is on the 11-speed bandwagon, many manufacturers are offering 11-speed wheels, and more.

We take a close look at the line of chain lubes, cleaners, and greases from Dumonde Tech. Our Tech Editor has been using them for over 10 years, and shares his thoughts.

South African Kyle Buckingham has quite a few fine results to his name, but possibly non more impressive than his 2013 GoPro Ironman World Championships result. See how his bike power file compares to the Pros.

Our look at the industry’s most important fit bikes (according to us) expands today. We’re looking at the Retul Muve and the bike by Shimano. Shimano’s isn’t out yet, it’s due out the middle of 2014.

Ken Glah had 10 Top 10 finishes, including a 3rd, two 4ths and two 5ths – but his greatest achievement may be the sheer endurance and consistency it took to finish 30 straight times at Ironman Hawaii.

Images of the hotly contested run and emotional finish at the Go Pro Ironman World Championship – the 37th edition of the race begun 35 years ago. Photo Gallery by Timothy Carlson.

Timothy Carlson’s images of the Go Pro Ironman World Championship in Kona – a few from the start and the rest from a remote section of the bike course.

Shimano, Cannondale (Guru), Trek (Purely Custom), and Specialized (Retul), join Exit Cycling as makers of first-rate fit bikes. If you’re a fitter, a coach, or a retail store, which among these bikes is for you? Here’s your guide.

Meredith Kessler and Linsey Corbin both finished in the top 10 at the 2013 Ironman World Championships and here is an analysis of their power data files.

We show you the professional method of cleat replacement. How do you replicate the position perfectly? Are shoe markings really accurate? For more, read on.

The crew at TrainingPeaks allows us again an inside of power numbers. Today we look at the data recorded by Aussie Luke Mckenzie anf German Faris Al-Sultan.

Australian Luke McKenzie has won six Ironman races at places like Malaysia, Brazil and China. On Saturday he had the race of his life on the sport’s biggest stage, leading until Mile 16 at Kona.

Frederick Van Lierde joins his coach and not-related namesake Luc Van Lierde as Belgium’s Ironman World Champions. This Van Lierde did it with a well-balanced attack and quiet confidence.

We now present our first set of images from the 2013 GoPro Ironman World Championships in Kona, Hawaii. Frederik van Lierde and Mirinda Carfrae were the winners.

Frederik Van Lierde crafted a balanced race to win his 1st Kona title while Mirinda Carfrae exploded into the lead with a record 2:50:35 run to win her 2nd Ironman World Championship.

On our 5th day here in Kona we were busy with the bike check-in for the 2013 GoPro Ironman World Championships. And it was a long hot afternoon.

We review the Serfas Urbana 650c x 28mm tire. This unique product is custom made for one retailer, and is one of the only wide 650c tire options in the world.

Specialized athletes competing during the London Olympics were on bright orange bikes, and here in Kona the Specialized Pros ride 1974 paint scheme inspired Shivs.