Follow the USA Pro Cycling Challenge with Trimble Outdoors

Earlier this week, the USA Pro Cycling Challenge began in Colorado. The Challenge is one of the elite cycling events in the world and far and away the most grueling to be held in the United States.

Over the course of a week, the riders will face daunting courses in the thin air of Colorado's high altitude, all set against the beautiful backdrop of the Rocky Mountains.

Cycling enthusiasts can now follow along with the event thanks to Trimble Outdoors and Bicycling magazine. You can view detailed course maps of all stages of the race online:

Prologue: Monday, August 22nd - Colorado Springs
Stage 1: Tuesday, August 23rd - Salida to Crested Butte
Stage 2: Wednesday, August 24th - Gunnison to Aspen
Stage 3: Thursday, August 25th - Vail
Stage 4: Friday, August 26th - Avon to Steamboat Springs
Stage 5: Saturday, August 27th - Steamboat Springs to Breckenridge
Stage 6: Sunday, August 28th - Golden to Denver

For the latest coverage and news from the Challenge, be sure to check Bicycling.com.

When you hit the cycling path, don't forget to load AllSport GPS on your mobile phone, as it tracks your position as well as over 20 fitness stats so you can maximize the effectiveness of your ride.