Tom Zirbel

Rally Cycling documents Tom Zirbel's hour record ride in Mexico. The U.S. TT specialist broke U.S. hour record in September 2016.

The 37-year-old talks about his career on the road and his historic, hour-long effort in September.

A look at the Diamondback Serios, which Tom Zirbel rode to a new U.S. hour record in Mexico. He was second only to Bradley Wiggins in the world.

Tom Zirbel sets new U.S. hour record in Mexico. The American rode 53.037km, which is also the second-best ride to Bradley Wiggins.

Tom Zirbel and Brianna Walle win a short opening time trial at the North Star Grand Prix.

Pre-race favorites Kristin Armstrong and Tom Zirbel don't disappoint, winning the Tour of the Gila's stage 3 time trial.

A huge bike for a rider that puts out huge watts. Zirbel will ride this Serios TT bike in the Amgen Tour's stage 6, which should suit him

A late crash at the Amgen Tour of California saw Ben Jacques-Maynes leave the race in an ambulance, while Giant's Warren Barguil was able to finish, barely

Tom Zirbel and Lauren Stephens prove fastest on a calm day in New Mexico, as Abbott and Montiel keep their overall leads

Rhae Shaw and Tom Zirbel turn in the fastest times in stage 2, and Jasmin Glaesser and Ryan Roth move into the overall lead in California

Crosswinds caused havoc and shook up the general classification in both the men's and women's races

Tom Zirbel (Optum) and Alison Powers (UnitedHealthcare) are in the lead after a double day of NRC stage racing in Minnesota

Taylor Phinney (BMC Racing) and Alison Powers (UnitedHealthcare) took U.S. national time trial titles in Chattanooga, Tennessee

Taylor Phinney is seeking history this weekend in the time trial and the road race at the U.S. championships

Defending women's champion wins stage 2 time trial to take overall lead at the 30th Redlands Bicycle Classic

Reigning U.S. time trial champion Tom Zirbel finishes three seconds behind Tvetcov

A number of national champions will be on hand for the annual race in Minnesota

Zirbel and Small open the weekend's racing with victories in the race against the clock

After a few missteps last season, including an ill-advised change of position, Zirbel is back on top of his time-trial game

Powerhouses Tom Zirbel and Alison Powers crank their way to Gila stage wins in the wind and cold

Texas native wins opening time trial at the Redlands Bicycle Classic following a rough 2012 season

Optum's Chad Haga has lofty goals for 2013 — he wants to win a WorldTour race — but his main priority is being the best U.S. TTer

With experienced riders like Bjorn Selander, Optum-Kelly Benefits Strategies focuses on moving forward in 2013

Hunter Allen analyzes the power data from Tom Zirbel and Roman Kreuziger in the final-stage time trial at the USA Pro Challenge

Zirbel and Powers prove fastest over 4.5-mile prologue course

Zirbel makes break pay dividends as Specialized-Lululemon teammates surprise women's field

The court of public opinion is fickle when it comes to convicted dopers. In Part II of a three-part series, we talk to cycling personalities about what drives acceptance in the public eye

The Green Mountain Stage Race beat the rain. Mostly.

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Tom Zirbel's Jamis Xenith T2 time trial machine

The Jamis-Sutter Home team, known in the past for its sprinters, is bringing a balanced team to the Amgen Tour of California next week. With the recent addition of time trial specialist Tom Zirbel, the squad has a mix of climbers, strongmen and sprinters.

SILVER CITY, New Mexico (VN) — Folks started speculating Thursday when Tom Zirbel borrowed a bike from the Jamis team when he suffered a mechanical at the Tour of the Gila. On Friday the team announced that it had signed the time trial ace for the rest of the season.

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Zirbel accepts a two-year suspension

Tom Zirbel is joining millions of his fellow Americans in tuning up the résumé and hunting work.

American cyclist Tom Zirbel announced on his blog Friday that he is retiring from the sport rather than continue an aggressive fight against doping charges.

The Bissell Pro Cycling Team is smaller but swifter for 2010, hoping to contend in crits as well as time trials and stage races.

Our readers weigh in on Tom Zirbel's positive and a winter warmup in Hawaii.

American Tom Zirbel faces as much as a two-year suspension after a laboratory analysis of a B sample confirmed an earlier positive for DHEA.

Tom Zirbel speaks with Brian Holcombe after announcing that he had tested positive for dehydroepiandrosterone (DHEA) following the USA Cycling Professional Individual Time Trial Championships.

Bissell's Tom Zirbel confirms that his "A" sample from the USA Cycling Professional Individual Time Trial Championships came back positive for dehydroepiandrosterone (DHEA).