The Nun Run returns for its 12th annual edition on September 13, 2026 in Centennial, Colorado, a fitting tribute to the Sisters of Life who champion life at all stages and advocate for dignity. This year's event is set along the scenic High Line Canal, offering participants a route that winds through deKoevend Park. Race morning sees runners and walkers gathering near Shelter A; the 5K run and half marathon will start from here, with the finish line situated nearby at Shelter B, where race day festivities will take place between Shelters B & C. The Nun Run has been a cornerstone of local charity for over a decade, supporting Denver Sisters of Life in their mission. This year’s event continues this tradition, aiming to raise awareness and funds through its diverse offerings: the 1-mile family fun walk, the 5K run, or the half marathon; each distance offers an opportunity to support the cause. The course venue is marked by firm and slightly soft terrain along the canal path, making for a challenging yet rewarding journey. The start/finish area will be at deKoevend Park near Shelter B with mass celebrations afterward. The route itself features notable landmarks such as the park’s natural beauty and historical significance, providing runners with scenic views throughout their run. On race morning, expect temperatures in the mid- to high-teens Celsius, feeling just right for a brisk 5K or half marathon on firm ground. Humidity levels are moderate at around 45%, while gentle winds will keep conditions comfortable but not too breezy. Precipitation is minimal with only about 1.8mm expected, so runners can expect clear skies and pleasant weather.
1 Mile Family Fun Walk 1.6K • Start: 07:30:00 • Fee: $28.74
1 Mile Family Pack - 4 or More 1.6K • Start: 07:30:00 • Fee: $108.98
5K Run 5K • Start: 07:30:00 • Fee: $34.09
Half Marathon 21K • Start: 07:30:00 • Fee: $66.18
T-Shirt Only Start: 07:30:00
Registration for the Nun Run costs $34.09 for a 5K run, $66.18 for a half marathon, and includes a t-shirt; family packs are also available at a discounted rate of $108.98 for four or more participants. The race is open to all ages with the only requirement being proper running attire. To register, visit https://raceroster.com/events/2026/118736/nun-run. Bib pickup will be held on race day near Shelter A; bring your ID and any other required documentation. Participants are encouraged to arrive early for a smooth start at the designated location: Centennial, Colorado. This 5K run is worth attending because it supports Denver Sisters of Life in their mission to protect every human life from conception until natural death. Join us to celebrate 12 years of dedicated service and support; your participation makes a difference.
Races Offered
1 Mile Family Fun Walk
Sep 13, 2026
straighten
Distance —
1.6K
terrain
Type —
Running
timer
07:30
sell
$28.74
1 Mile Family Pack - 4 or More
Sep 13, 2026
straighten
Distance —
1.6K
terrain
Type —
Running
timer
07:30
sell
$108.98
5K Run
Sep 13, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
07:30
sell
$34.09
Half Marathon
Sep 13, 2026
straighten
Distance —
21K
terrain
Type —
Running
timer
07:30
sell
$66.18
Weather History
These values represent the 3-year monthly averages for September in Centennial.
thermostatTemperature
11.2° / 26.6°
wb_sunnyFeels like
8.1° / 23.2°
light_mode
Avg sunshine hours
11h 4m
water_drop
Avg rainfall
1.8 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
10.3 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
45.1%
wb_twilight
Sunrise
06:41
nightlight
Sunset
19:06
About Centennial
Learn more about the host city, Centennial.
Centennial is a suburban city of about 106,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The city lies in Douglas County southeast of Denver.
