Aspen Cycling Club

We are a non-profit 501(c)(3) organization dedicated to encouraging participation in bicycling at all levels. The Club sponsors weekly races, both on and off road. We also work with local governments and bike shops in self-regulating the use of our local trails and roads for responsible bike usage.

Order your ACC Team Kit here.

Prince Creek MTB Race

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Date: Wednesday, May 15,  2019

Location: Prince Creek Trail System, Carbondale. Parking will be at Roaring Fork High School. Registration will be near start line—allow time to ride to the start (3 miles).

Start Time: 6:00pm

Event Type: Mountain Bike – FREE EVENT

Course Description:

The short course will be a loop on the Prince Creek Trails. The long course will add on an additional loop. Riders will start at the new parking area, the “Bull Pen”. Riders will start on the road for a bit and get on the single track at Tybar Ranch Gate (left off road). Climb on the Prince Creek trail and continue climbing Monte Carlo trail. Riders will rejoin the Monte Carlo trail at the new BLM campground. Climb single track to BLM 8320/Porcupine Traverse, then turn left onto BLM 8320 and follow it to Highline Trail. Turn right on to Highline Trail, follow Highline to BLM 8320, turn right and climb BLM 8320 to Trough. Descend Trough to South Porcupine. Turn left on South Porcupine and then turn right onto Ginormous. Descend Ginormous. Turn left after Ginormous onto Monte Carlo and climb Monte Carlo through to BLM 8320/Porcupine Traverse again. Turn left towards Highline again. Short Course: Finish next to Highline gate at base of Highline. Long Course: Climb through Highline again then continue up BLM 8320 to Father of Ginormous. Riders will descend Father of Ginormous through the extension (watch out for trail changes). After the descent, long course riders will turn left again up prince creek trail to porcupine traverse and finish next to the Highline Gate.

Waves / Start Times / Laps:

Wave 1: Time 6:00 – Long Course – Men’s A

Wave 2: Time 6:03 – Long Course – Women’s A, Men’s B

Wave 3: Time 6:05 – Short Course – All other categories

Parking Info: Very limited parking is available at the Prince Creek Trails. Please park at Roaring Fork High School and ride to the start line (about 25 minutes at an easy pace).

Race Day Sign-In: Sign in and/or paper registration takes opens at 5:00pm at the START LINE. From parking at the Roaring Fork High School to start line on Prince Creek Road is about 25 minutes at an easy riding pace. The Prince Creek MTB Race will be free of charge for all racers.

Warm-Up: Please do not warm up on the race course after 6:00pm. After that time, ride on Prince Creek Road below the start area. Be respectful of traffic and property during your warmup. Do not block cars, and do not urinate in public. If caught urinating, you will be disqualified from the evening’s race. Plan accordingly.

Volunteer: To sign up to Marshal for this race or any race this season go to the Marshal Sign-Up

Race Day Sign-In: Everyone must sign-in at each race regardless of membership level. Race day sign-in will take place from 5:00 PM to 5:45 PM at the start of the race (unless specifically noted otherwise). Race numbers are issued for each discipline for the entire season. Bring your number to every race – lest you have to wear the handwritten Number Of Shame! Race day entry fees are free for juniors and full members, $20 for non-members.

Registration: View registration information here

Categories: Click Here for more information about our race categories.

Cancellation policy: PLEASE DO NOT PHONE OR TEXT THE RACE DIRECTOR FOR RACE CANCELLATION INFORMATION. In the event of inclement weather on race day, the Aspen Cycling Club Board of Directors will communicate with the Race Director to determine the Club’s ability to operate a race that is reasonably safe for competitors, and, for mountain bike races, preserves the integrity of local trails. All racers should assume that a final decision will be made at the start line by the race director. However, when possible, the Board of Directors will alert racers of a race cancellation prior to the start by emailing the Club email group, and posting on the website and the ACC Facebook page by 5pm.

Lower River Road Time Trial

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Date: July 24, 2019
Location: Lower River Road, just before Gerbaz Way
Start Time: 6:00pm
Event Type: Road
Party Info: 

Course Description: The 2019 Aspen Cycling Club race season begins with the Lower River Road Time Trial. The first racer departs at 6:00pm and racers start every 30 seconds. Racers begin just below the intersection of Gerbaz Way and Lower River Road, then ride northwest on Lower River Road, turn around just before the bridge at Highway 82, then ride back toward the start. Finish line is approximately .85 miles northwest of the start line. The race is 8.8 miles in length.

Course Map: View the course on Ride with GPS.

Start Times:  This race is a time trial, and you will be assigned a start time when you check in the day of the race. Please be aware of the Aspen Cycling Club Time Trial Start procedure: Competitors must arrive in the start queue no later than 30 seconds before their start. Failure to meet this requirement will mean a forfeiture of start position and relegation to end of start list. All time trial racers are required to start from a full stop (if race officials/marshals/volunteers are available, each racer will be held for a time trial start). If no holder is available, each racer must start with one foot on ground.

Warm-Up: Please do not warm up on the race course after 6:00pm. After that time, please ride toward Woody Creek on River Road. Be respectful of traffic and property during your warmup. Do not block cars, and do not urinate in public. If caught urinating, you will be disqualified from the evening’s race. Plan accordingly.

Parking Info: Very limited parking is available at Jaffe Park and near Woody Creek Tavern.

Volunteer: To sign up to Marshal for this race or any race this season go to the Marshal Sign-Up

Race Day Sign-In: Everyone must sign-in at each race regardless of membership level. Race day sign-in will take place from 5:00 PM to 5:45 PM at the start of the race (unless specifically noted otherwise). Race numbers are issued for each discipline for the entire season. Bring your number to every race – lest you have to wear the handwritten Number Of Shame! Race day entry fees are free for juniors and full members, $20 for non-members.

Registration: View registration information here

Categories: Click Here for more information about our race categories.

Cancellation policy: PLEASE DO NOT PHONE OR TEXT THE RACE DIRECTOR FOR RACE CANCELLATION INFORMATION. In the event of inclement weather on race day, the Aspen Cycling Club Board of Directors will communicate with the Race Director to determine the Club’s ability to operate a race that is reasonably safe for competitors, and, for mountain bike races, preserves the integrity of local trails. All racers should assume that a final decision will be made at the start line by the race director. However, when possible, the Board of Directors will alert racers of a race cancellation prior to the start by emailing the Club email group, and posting on the website and the ACC Facebook page by 5pm.

Spring Gulch Hill Climb

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Date: Wednesday, May 22nd, 2019
Event Type: Road Race
Start Time: 6:00pm
Party Info:
Parking Info:  We suggest parking at the High School and riding to the start because of the limited parking at and near CRMS on Thompson Creek Road.

Warm-Up: Remember to obey all traffic laws and please warm-up on Spring Gulch Road (CR 108).  In order to decrease our impact on local evening commuter traffic please do not warm up on Hardwick Bridge Road (CR 109).

Location: The Spring Gulch Hill Climb  will start near the entrance to Colorado Rocky Mountain School (CRMS) in Carbondale. To get to the start and CRMS, take Highway 133 towards the Main Street roundabout in Carbondale (7/11 intersection). Take the first right coming from highway 82 at 7/11 onto West Main Street and proceed about 1.1 miles to CRMS, 1493 County Road 106. Limited parking is available in the pullouts on Thompson Creek Road, just past CRMS.

Course Description: This year’s race will be 6.6 miles from start to finish gaining around 1,700 vertical feet. The course averages over 6% but begins with a much steeper climb.  For this year’s finish, racers will continue past the Spring Gulch parking lot another 0.6 miles. The finish line will be located on Thompson Creek Road where FS Road 306 cuts off to the left. This is the first dirt road on the left past the Nordic center.

Start Times:
Wave 1: 6:00pm – Men’s Open
Wave 2: 6:02pm – Women’s Open, Men’s Advanced
Wave 3: 6:08pm – Women’s Advanced, Men’s Master 50+, Women’s Master 50+,  Men’s Grand Master 60+, High School
Wave 4: 6:10pm –  Men’s Novice, Women’s Novice, Men’s Super Grand Masters 70+

Reminder:  *** Since this is a road race on open roads, Middle School Racers are NOT ELIGIBLE TO COMPETE****

Volunteer: To sign up to Marshal for this race or any race this season go to the Marshal Sign-Up


Race Day Sign-In: Everyone must sign-in at each race regardless of membership level. Race day sign-in will take place from 5:00 PM to 5:45 PM at the start of the race (unless specifically noted otherwise). Race numbers are issued for each discipline for the entire season. Bring your number to every race – lest you have to wear the handwritten Number Of Shame! Race day entry fees are free for juniors and full members, $20 for non-members.


Registration: View registration information here


Categories: Click Here for more information about our race categories.


Cancellation policy: PLEASE DO NOT PHONE OR TEXT THE RACE DIRECTOR FOR RACE CANCELLATION INFORMATION. In the event of inclement weather on race day, the Aspen Cycling Club Board of Directors will communicate with the Race Director to determine the Club’s ability to operate a race that is reasonably safe for competitors, and, for mountain bike races, preserves the integrity of local trails. All racers should assume that a final decision will be made at the start line by the race director. However, when possible, the Board of Directors will alert racers of a race cancellation prior to the start by emailing the Club email group, and posting on the website and the ACC Facebook page by 5pm.


Emma Roubaix- Road Race

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Date: Wednesday, August 14th, 2019
Event Type: Road Bike
Location:  To reach the start, take the Emma turnoff from Highway 82 just down valley from Basalt and immediately turn left onto East Sopris Creek Road.
Start Time: 6:00pm, please be prepared for cold and possibly darker conditions at the finish.

Course Description:
From the race start at the Emma Schoolhouse, racers head up East Sopris Creek Road to a T-intersection with East and West Sopris Creek Roads. Turn left (east) onto East Sopris Creek Road. The paved road gives way to a mag chloride treated dirt surface about a mile up East Sopris Creek and continues on dirt until the crest of the climb. From this point, the road continues as a paved descent into the Capital Creek valley. At the intersection with Capitol Creek Road, ALL racers will turn sharply right and climb Capital Creek Road about 4.5 miles to the turnaround point past the Monastery and just before the end of the pavement. Descend back down Capitol Creek Road to the intersection with Snowmass Creek Road. Bear right onto Snowmass Creek Road. Ride to the end of the pavement with a finish at near the intersection of Shield-O Rd and Snowmass Creek Rd. The course for all riders is approximately 21.4 miles with 2,400 feet of elevation gain.

Start Times:  
Wave 1: 6:00pm – Men’s  A
Wave 2: 6:03pm – Women’s A, Men’s B
Wave 3: 6:06pm – All other categories

Reminder:  *** Since this is a road race on open roads, Middle School Racers are NOT ELIGIBLE TO COMPETE****

Volunteer: To sign up to Marshal for this race or any race this season go to the Marshal Sign-Up

Race Day Sign-In: Everyone must sign-in at each race regardless of membership level. Race day sign-in will take place from 5:00 PM to 5:45 PM at the start of the race (unless specifically noted otherwise). Race numbers are issued for each discipline for the entire season. Bring your number to every race – lest you have to wear the handwritten Number Of Shame! Race day entry fees are free for juniors and full members, $20 for non-members.

Registration: View registration information here

Categories: Click Here for more information about our race categories.

Cancellation policy: PLEASE DO NOT PHONE OR TEXT THE RACE DIRECTOR FOR RACE CANCELLATION INFORMATION. In the event of inclement weather on race day, the Aspen Cycling Club Board of Directors will communicate with the Race Director to determine the Club’s ability to operate a race that is reasonably safe for competitors, and, for mountain bike races, preserves the integrity of local trails. All racers should assume that a final decision will be made at the start line by the race director. However, when possible, the Board of Directors will alert racers of a race cancellation prior to the start by emailing the Club email group, and posting on the website and the ACC Facebook page by 5pm.


Castle Creek presented by The Aspen Times (Road)

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The 2019 Castle Creek Road Race is presented by The Aspen Times.

Date: Wednesday, July 17, 2019
Race Name: Castle Creek
Location: Register at Aspen Valley Hospital parking. Race starts on Castle Creek Road near the Music Festival campus.
Parking: Do not park at AVH. Please park in Aspen and ride to registration.
Start Time: 6:00pm
Event Type: Road
Party: There is no party this week.

Course Description: This 22 mile road race features about 2,000 feet of elevation gain over the rolling terrain of Castle Creek Road. The race will be staged near Music School Road off of Castle Creek Road. The race will proceed approximately 11 miles up Castle Creek Road past Ashcroft and the Pine Creek Cookhouse to the end of the County Road and the turn off to Pearl Pass. From the turn around, proceed back down Castle Creek Road 10 miles, and at about mile marker 3.5 and get ready for an uphill finish at the top of the hill opposite South Hayden Road. All categories will use the same course.

Start Times:

Wave 1, Men’s A: 6:00pm

Wave 2, Women’s A, Men’s B: 6:03pm

Wave 3: All other categories: 6:06pm

Warm-Up: Please do not warm up on the race course after 6:00pm. After that time, please do not ride anywhere on Castle Creek Road except when riding to the start line. Be respectful of traffic and property during your warmup. Do not block cars, and do not urinate in public. If caught urinating, you will be disqualified from the evening’s race. Plan accordingly.

Volunteer: To sign up to Marshal for this race or any race this season go to the Marshal Sign-Up


Race Day Sign-In: Everyone must sign-in at each race regardless of membership level. Race day sign-in will take place from 5:00 PM to 5:45 PM at the start of the race (unless specifically noted otherwise). Race numbers are issued for each discipline for the entire season. Bring your number to every race – lest you have to wear the handwritten Number Of Shame! Race day entry fees are free for juniors and full members, $20 for non-members.


Registration: View registration information here


Categories: Click Here for more information about our race categories.


Cancellation policy: PLEASE DO NOT PHONE OR TEXT THE RACE DIRECTOR FOR RACE CANCELLATION INFORMATION. In the event of inclement weather on race day, the Aspen Cycling Club Board of Directors will communicate with the Race Director to determine the Club’s ability to operate a race that is reasonably safe for competitors, and, for mountain bike races, preserves the integrity of local trails. All racers should assume that a final decision will be made at the start line by the race director. However, when possible, the Board of Directors will alert racers of a race cancellation prior to the start by emailing the Club email group, and posting on the website and the ACC Facebook page by 5pm.