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Event: Lowell Observatory 110k

Date / Time

Start Date:  Saturday, August 22, 2026
Distance: 68 miles
Start Time: 7:00 AM
     There will be a mass start at 7:00 AM and announcements and time for questions at 6:55.
Time Limit: 7 hours
Sunrise:  6:19 a.m.
Sunset:  6:14 p.m
Cost: $10 All riders must pre-register. There is no day-of-event registration.

RUSA sanctioned.

WAIVER NOTE : You will be automatically directed to the online waiver after you submit your PayPal payment. If you are not automatically directed to the online waiver after your pay, you may press the "Return to Merchant" button to sign the waiver. The online waiver may also be found at tinyurl.com/AZBrevetWaiver.
REGISTRATION NOTE : Once you are registered for a ride, you will see your name in the Registered Riders tab. It may take a day or so for it to appear. Registered riders WILL be sent a "Last Minute Notes" email the day after registration closes, normally the Thursday before the ride. If you do not receive it, please let me know. Also, check your spam folder for the email.
RIDE VERIFICATION : All of these events are sanctioned by Randonneurs USA (RUSA). As such, all of them will be verified using approved RUSA methods. Click HERE to see the details of available options for AZ Randonneurs' events.

Ride Description

This route starts in Flagstaff. It visits both Lowell Observatory Telescopes, the Navy Precision Optical Interferometer (NPOI) and Mormon Lake. Recall that Pluto was discovered at Lowell back on Feb 18, 1930.

This is a really fun ride, and one that I do fairly often when I want to get out of the desert heat! There is a companion 200k ride which will allow you to bring friends who may not want to do this distance.

Terrain: The route mostly rolling. The climbs up to the telescopes are short but steep. You're welcome!

Start Location

Directions to the start:
Location: Thorpe Park, Flagstaff
Address: 29 N Toltec St, Flagstaff, AZ 86001

There is on-street parking on Toltec St, also at Thorpe/Birch intersection.

Google map: Click HERE
Directions:  At the base of Mars Hill (Lowell Observatory) in Flagstaff.

Here is a more detailed map of where riders can park. The map link will take you to the preferred corner of the park, but getting to that location is easy from any parking location.

Details here:

Parking Details

Route Information

Route map:
View  RWGPS online map here



Elevation profile:
Total elevation gain for the 110k is ~3,000 feet.



Cue sheets may be downloaded and printed by riders if they wish. Cue sheets will NOT be passed out at the start. Make sure you have a cue sheet as a backup in case your GPS fails.

(Excel format is not available.)

Download PDF cue sheet

Create  custom cuesheet

Rider Info

Lights: We will start/finish in daylight so lights and reflective vest/ankle bands are not required at the start.

Services will be available at regular intervals. 2 water bottles should be sufficient for this ride.

It is not uncommon to have evening rain. It's usually refreshing, but can be cold at these elevations. Riders should be prepared accordingly.

Registered Riders


1 Registered Riders.

You KNOW you want to join us!
Rider Name RUSA # City State/Prov
Mike Sturgill 1847 Phoenix AZ

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