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Big Brothers Big Sisters of Flagstaff Dave McKay Memorial Half Marathon and 5K Run/Walk

Flagstaff, Arizona

Flagstaff, Arizona

Sat 12th August 2023 - Sun 13th August 2023

4 races

Organiser's Description

Join the 2nd oldest half marathon in Arizona sponsored by Kinney Construction Services! This year we are planning to hosting our 46th annual race. All Half Marathon participants will get a commemorative finisher's medal. Both 5k or half) will receive a $34 Sweatvac Hi-Tech colorful long-sleeved shirt. Kid's Dash participants will get a medal. See photos and the last year's race!
BIZ FIT FINISHER's Photo backdrop! In addition to free downloadable digital photos taken by our on-course photographers, you will also have a chance to get a free photo your artful half marathon finishing medal. After you cross the finish line, just go find the Biz Fit booth! 
11 AM finishing time cut-off!  This gives competitive runners 3 hours and 30 minutes to finish the race.  If you need extra time, we offer a 6 AM early start. For early starters, finisher medals are awarded, but you will not be eligible for age division awards.  
Competition for teams with the most participants!  Runners/walkers on the largest corporate or friends/family team will win a 20% discount on next year's race!  
The race is also part of the Flagstaff Running Series value package that will be announced in mid-February. If you do not plan to register for the value package, you can save $10 by registering on this site through February 28th! 
We will again have a non-binary division for the Half Marathon and 5K. This will be one division in each race (no age groups) and you will see the radio button to identify yourself as a non-binary runner.  
ONLINE REGISTRATION CLOSES AUGUST 12th, however, you can register the night before the race at Grand Canyon Adventures (400 South Malapais Lane). PLEASE NOTE WE WILL NOT HAVE RACE DAY REGISTRATION, only pre-registered race bib and shirt pick up!!!!!
Our beautiful course starts at Thorpe Park (do note no longer Wheeler Park!) and climbs the steep urban trail onto Observatory Mesa (where astronomers discovered Pluto) and follows dirt roads on with spectacular views of the San Francisco Peaks. Elevations range between 6957 ft at the start, to 7731 ft near the 7.5 mile mark! Most of the climbing is done over the first 1.25 miles, so pace yourself. If you are from lower elevations, heed the race director's advice and power walk!!!! You will easily make up the time over the rest of the course!  The 5K is also on Observatory Mesa. ALL proceeds benefit BBBSF Mentoring Programs that create and support one-to-one mentoring relationships that ignite the power and promise of youth.
Course Maps on Strava: Half Marathon; 5K
AID STATIONS: Mile 1 (before 5K/Half Marathon split), Mile 2 (gate at top of urban trail), Mile 4.5 (Junction of Pipeline and Forest Road), Mile 6 (used to be halfway), Mile 8 (Haag's Hideway), Mile 10.1 (Same as 4.5 on return), Mile 11 (same as Mile 2 on return), Mile 12 (Same as mile 1 on return).
August 10th: Early Packet Pick up at Run Flagstaff, 2:30 PM to 5:30 PM, 204 West Historic Route 66, Flagstaff
August 11th FRATELLI'S PIZZA PARTY PACKET PICK UP: All registered runners get a free pizza party from 5:30 to 7:30 PM at Grand Canyon Adventures where you can pick up your Bib and shirt. Friends and families can make a $10 donation to join the party.  This is also the last opportunity to register as there will be no race day registration (you can pick up your Bib and shirt on race day beginning at 6 AM at Thorpe Park). 
RACE DAY PARKING AROUND THORPE PARK PICNIC RAMADA: PLEASE DO NOT PARK AT THORPE PARK; We must leave this open for those that use the Adult Center and the tennis courts. You can park along any of the residential streets, Aspen, Birch, or Cherry Street that lead to the park. 
August 12th Race Day STARTING TIMES: Early Half Marathon for non-competitive walkers/runners (you are timed but do not compete in age division standings) start at 6 AM, New this year, Kid's Dash at 7:15 AM, Regular Half Marathon 7:30 AM, and 5K at 7:45  AM. 
August 12th Estimated start of Medal Awards and Photos: 5K Fun Run  8:30 AM, Only top 3 overall Male and Female and top non-binary runner. 10:15 AM Half Marathon, Age Division Awards. Top Overall Open M and F (Under 40) and Masters M and F (40 and over) are pulled from age division awards.  
All participants in the Half Marathon/Half Marathon Walk/5K Fun Run will get a Sweatvac hi-tech dye sublimated T-shirt. Half Marathon participants will receive a finisher's medal. Kid's Dash participants will get a finisher's medal as well. 
Big Brothers Big Sisters of Flagstaff Half Marathon is also part of the Flagstaff Running Series value package of five of Flagstaff's most iconic foot races. You can save big on the Series package of races by registering for one-stop shopping at
The half marathon is also part of the 2023 Series Runner Arizona Half Series where you can run Arizona's most popular half marathons and win medals for doing so!


  • Big Brothers Big Sisters of Flagstaff Half Marathon

    Sat 12th August 2023

  • Big Brothers Big Sisters of Flagstaff Early Half Marathon Run/Walk

    Sat 12th August 2023

  • Big Brothers Big Sisters of Flagstaff 5K Fun Run

    Sat 12th August 2023

  • Big Brothers Big Sisters of Flagstaff Kid's Dash

    Sun 13th August 2023



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