The 2012 USA Pro Challenge rode from Golden to Boulder on Saturday and Rory Sutherland of UHC won Stage 6 on the penultimate day of the race. Sutherland finished 20 seconds ahead of runner up Fabio Aru of Astana. Jens Voight finished 26 behind Sutherland.
Levi Leipheimer, the 2011 Pro Challenge winner, took the yellow jersey lead from Tejay Van Garderen at the completion of the stage, finishing fourth (+0:0:45) behind Leipheimer. Leipheimer holds a nine-second lead over Christian Vande Velde and a 21-second lead over Van Garderen and Joe Dombrowski. Vande Velde is a member of Garmin-Sharp-Barracuda, the Boulder-based cycling team. Teammate Peter Stetina is in seventh, with a 38-second gap to overcome.
Sunday concludes this year's Pro Challenge and will feature a 9.5-mile time trial around Denver.
Here is a look at the top 10 of the standings:
| Pos | Rider | Team | Time | Gap |
| 1 | Levi Leipheimer | Omega Pharma-Quick-Step | 25:39:50 | |
| 2 | Christian Vande Velde | Garmin-Sharp-Barracuda | 25:39:59 | :09 |
| 3 | Tejay Van Garderen | BMC Racing Team (USA) | 25:40:11 | :21 |
| 4 | Joe Dombrowski | Bontrager-Livestrong | 25:40:11 | :21 |
| 5 | Ramiro Rincon Diaz | EPM - UNE | 25:40:12 | :22 |
| 6 | Andreas Kloden | RadioShack Nissan Trek | 25:40:16 | :26 |
| 7 | Peter Stetina | Garmin-Sharp-Barracuda | 25:40:28 | :38 |
| 8 | Janez Brajkovic | Astana | 25:40:31 | :41 |
| 9 | Ivan Rovny | RusVelo | 25:40:31 | :41 |
| 10 | Damiano Caruso | Liquigas-Cannondale (Italy) | 25:40:42 | :52 |
For more on the race, stick with SB Nation Denver, or head over to Podium Cafe, SB Nation's cycling blog.