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Highlights from the final day of racing on the roads of Colorado during the USA Pro Challenge.

Photos from the final stage of racing at the USA Pro Challenge, which saw Rohan Dennis capture the overall crown.

Several riders returned to action over the weekend, including Fabian Cancellara at the Vuelta a Espana.

Quintana erased any doubts, and confirmed his Vuelta intentions with an attack in the opening stage that he's in Spain to win.

The Astana rider is disqualified from the Vuelta after hanging onto the team car, but he says his team left him behind after a crash.

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Rohan Dennis wraps up the USA Pro Challenge title as John Murphy edges Taylor Phinney to win the final stage in Denver

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Rohan Dennis confirms his title at the USA Pro Challenge as John Murphy takes the finale from Taylor Phinney

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Coryn Rivera sprints to the final stage win as Kristin Armstrong takes the overall in the first Women's USA Pro Challenge

The Astana rider was sent home for holding onto his team car while trying to rejoin the other favorites following a crash

Colorado race faces uncertain future as owners Rick and Richard Schaden are named in lawsuit and have yet to secure additional sponsorship.

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Esteban Chaves lights it up on the final steeps to win stage 2 and seize the overall lead

André Greipel takes a big one-day win at the Vattenfall Cyclassics in Hamburg, Germany

A banner day for Wiggle-Honda sees Jolien D'hoore take a win and the overall World Cup lead in Sweden

Johan Esteban Chaves Rubio shows strength in a steep finale, taking the stage win and the red leader's jersey as some favorites lose time

The Vuelta will be another big opportunity for Nairo Quintana to take on cycling's best on a grand tour stage

Highlights from the sixth stage of the USA Pro Challenge, won by Roman Kreuziger

The sixth stage of the USA Pro Challenge took the peloton from Loveland to Fort Collins, where Roman Kreuziger triumphed from the break

Kreuziger takes the stage 6 win in Fort Collins, while Rohan Dennis retains his GC lead

It hasn't taken long for Allie Dragoo to find herself contending for big wins as a pro

Lawson Craddock has redemption on his mind as he settles in for three weeks of racing in Spain

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BMC takes a Vuelta stage win along Spain's scenic southern coast

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BMC Racing wins the first stage of 2015 Vuelta, a 7.9km team time trial

BMC's team time trial win gets Tejay van Garderen's Vuelta off to a good start

Kreuziger proves the strongest in a six-man breakaway group to take the win in Fort Collins, as Dennis retains his overall race lead

26-year-old Tayler Wiles takes the stage victory in Fort Collins, Kristin Armstrong holds on to her race lead

BMC Racing wins the Vuelta's stage 1 team time trial

Rohan Dennis took a convincing time trial win in Breckenridge

After giving Froome a chance to show off his promising talent back in 2011, the Vuelta holds a special place in the Tour winner's heart

After a two-year stint at the WorldTour level with Astana, Evan Huffman has his mind on the present with SmartStop

Five years ago, Thomas Craven decided to return to pro bike racing, organizing a development team that's aiming to go WorldTour by 2017.

Scenes from the fifth stage of the USA Pro Challenge, which saw Rohan Dennis take his second stage win in as many days

Rohan Dennis takes his second straight USA Pro Challenge stage win and extends his overall lead

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Rohan Dennis (BMC Racing) extended his overall lead after winning the stage 5 time trial in Breckenridge

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Colombian Carlos Betancur and French team Ag2r La Mondiale break contract after difficult three-year relationship

Riding for Team Sky's formidable Vuelta squad, American Ian Boswell is making his grand tour debut in Spain.

Twenty16's Kristin Armstrong claimed the first stage of the inaugural Women's USA Pro Challenge race and the leader's jersey.

After retiring from professional racing last year, JJ Haedo has made a quick transition to be a a part-time assistant director with Jamis.

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After Jamis rider Daniel Jaramillo crashes in stage 4, questions are raised about the conduct of the WorldTour teams.

Rohan Dennis captured stage 4 of the USA Pro Challenge will a blistering attack up Moonstone Road before finishing in Breckenridge.

Robbie Squire of Hincapie Racing is third overall entering Friday's time trial, but he says the peloton hasn't been kind to him.

Armstrong jokes that she's competing with retired NFL quarterback Brett Favre, returning to racing yet again out of love for the sport.

Casey B. Gibson captures the action at the fourth stage of the USA Pro Challenge, which took the peloton up the brutal Independence Pass.

The Pro Challenge GC changes hands again, but BMC keeps the overall lead as Rohan Dennis wins his first stage of the race.

The Briton is aiming to become just the third rider in history to win both the Tour de France and Vuelta a Espana in the same year.

IAM Cycling's only American, Larry Warbasse is writing journals from the Vuelta. Here he, talks about the prep required for a grand tour.

The BMC rider wins stage 4 in Breckenridge, snatching the leader's jersey from teammate Brent Bookwalter (left) ahead of Friday's TT.

Organizers take action after several riders raised safety concerns about the 7.4km route, which features several surfaces — including sand.

Global Cycling Network takes us on a ride of the 7.4km TTT course, which features sand, a wooden bridge, and five other surfaces.

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Rohan Dennis rides to victory in stage 4, takes overall lead from teammate Brent Bookwalter on eve of race's decisive time trial.

Derek Bouchard-Hall, the new CEO at USA Cycling doesn't want to dwell on past mistakes, is on a "listening campaign" to gather feedback.

A mural that honors one of America's lesser-known cycling heroes will be unveiled along the Richmond worlds course this September.

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