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Greater Arizona Bicycling Association, Inc.
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HomeTumacacori Century

Tumacacori Century 

Sunday, October 11, 2020.
Distances: 100 Mile Loop/Out & Back, 70 Mile Out & Back, 30 Mile Out & back.
Gene Chapman Memorial Bicycle Ride
Start/Finish for 100 mile and 70 mile distances: Sahuarita High School, 350 W, Sahuarita Rd, Sahuarita, Arizona 85629. 30 Mile distance will start and end at the Amado SAG stop.

Ride Organizer and Co-Organizer NEEDED to run this ride. Please contact Volunteer Coordinator or Supported Rides for more information.

THE most popular GABA bicycle ride in Southern Arizona! Three options are available for riders from novice to very experienced cyclists.

What makes this such a GREAT ride?

• It's October in Tucson...perfect weather for a bicycle ride.

• With El Tour De Tucson a month away, it proves to be an excellent training ride.
• The route is a mixture of flat, rolling hills, and challenging climbs, all the while being very picturesque!
• Many cyclists record their best time for riding a century on this route!

Register Now!

Course Overview & Maps                                                                           

All route options run south through the scenic Santa Cruz River Valley, Tubac, and Tumacacaori Mission with distance options that will accommodate all levels of cyclists.

We will provide four support and gear (SAG) stations (shown as A, and B, on the maps below) where you can refuel with fruit, water, sports drink, snacks and sandwiches. Back at the finish, we’ll have Subway sandwiches for lunch. 

There will be three Sweep vehicles on the routes providing mechanical support, and first aid if necessary. Each vehicle will be marked with a yellow magnetic sign that reads, "SUPPORT VEHICLE".

Watch for GABA signs indicating all the turns of the course and turnaround points. If you want paper map & cue sheets, please follow the links below and print at home to bring along. Begin riding after you have checked in

100 Mile Out & Back - Rio Rico
Tum 70
70 Mile Out & Back - Tumacacori Mission
Tum 30  mi
30 Mile Out & Back - Arivaca - Tumacacori Mission
100 Mile Out & Back
Note: Check in/Register by 6:30AM  - 7:00AM,  be on the road by 7:30AM to be finished by 4:00 PM.

Stay after your ride and enjoy a Subway lunch with fruit, snacks, water, and other refreshing beverage.

Details: 100 Mile Loop/Out & Back and RidewithGPS.  

70 Mile Out & Back
Note: Check in/Register by 7:00AM - 7:30AM, be on the road by 8:00AM to be finished by 4:00 PM.

Stay after your ride and enjoy a Subway lunch with fruit, snacks, water, and other refreshing beverage.

Details: 70 Mile Loop/Out & Back and RidewithGPS 

30 Mile Out & Back
Note: Check in/Register by 8:00AM  - 8:30AM,  be on the road by 9:00AM to be finished by 4:00 PM.

Stay after your ride and enjoy a Subway lunch with fruit, snacks, water, and other refreshing beverage.

Details: 30 Mile Out & Back, and RidewithGPS.  


Online registration opens July  and closes Wednesday October at 10:00 PM.

Each rider is required to register. Fees are per rider, not per bike (both riders of a Tandem must register separately).

Be aware of the cancellation policy (below). You must log in as a member and register online for the discount. There will not be a discount on Day of registration.

• July -  Sep : GABA Members - $30.00, Non - members: $50.00

• Sep - Oct : GABA members - $40.00, Non - members: $60.00.

• Day of Event
  - $60.00 for GABA Members (required proof of membership); $80.00 Non-Members

  - You must present your GABA membership card for the member rate. 
  - Membership card is available from your account on the GABA website. Please log in and go to your profile.
  - Fees payable by cash, check, or credit card.

Attention ABC/PMBC members: before registering, email Supported Rides@GABA to get your online discount code.

We’ll send emails to registered riders three days pre-ride with updates, so be sure to register with a working email address. If you do not see the GABA Welcome email by the day before the ride, please check your spam/junk folder

Register Now!

Volunteer Opportunity                                                                                             

To have successful rides, we need members to volunteer to help with check-in/registration before the ride, operate a SAG stop, or drive a sweep vehicle to help cyclists. Learn more on the GABA Volunteering page and send questions to our Volunteer Coordinator,  via

                                             Ride Organizer and Co-Organizer NEEDED.

Thanks and hope to see you on the ride!


Ride Specific Information                                                                                      
For ride specific information go to the Information Page, of if you have questions reach out directly via

Cancellation Policy                                                                                           
Cancellation Policy can be found on the Registration page.Cancellation Policy can be found on Registration page