2026 Registration Information Remember, packet pickup is Saturday, September 12, from 10 am - 3 pm Packet pick up will be at the University Union Building - 1st floor Race start times for Sunday, September 13, 2026: Half Marathons start @ 7 a.m. Shuttle buses to the start line for the Downhill Half leave the UU building at 6 a.m. 10K starts @ 7:30 a.m. 5K starts @ 8:00 a.m. **Cut off time is 12noon** Registration fees are non-refundable. Registration for all races ends on Saturday, September 12, 2026, at 3 p.m. Same-day registration is allowed for all races. However, participants will NOT receive a 'chipped' bid. Children under 12 run free with a registered adult. Only registered participants receive a medal and a shirt. Too far from Casper? RACE VIRTUALLY! Do a virtual T-bird Trek and get the shirt. The difference is you pick the date, time, and place. Check out the details. Register here.
Races Offered
10K
Sep 13, 2026
straighten
Distance —
10K
terrain
Type —
Running
timer
07:00
sell
$70.00
5K
Sep 13, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
07:00
sell
$60.00
Downhill Half Marathon
Sep 13, 2026
straighten
Distance —
21.1K
terrain
Type —
Running
timer
07:00
sell
$80.00
Lookout Point Half Marathon
Sep 13, 2026
straighten
Distance —
21.1K
terrain
Type —
Running
timer
07:00
sell
$80.00
VIRTUAL T-Bird Trek (10K)
Sep 13, 2026
straighten
Distance —
10K
terrain
Type —
Running
timer
07:00
sell
$70.00
VIRTUAL T-Bird Trek (5K)
Sep 13, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
07:00
sell
$60.00
VIRTUAL T-Bird Trek (Half Marathon)
Sep 13, 2026
straighten
Distance —
21.1K
terrain
Type —
Running
timer
07:00
sell
$80.00
Weather History
These values represent the 3-year monthly averages for September in Casper.
thermostatTemperature
11.1° / 25.5°
wb_sunnyFeels like
7.9° / 20.9°
light_mode
Avg sunshine hours
11h 20m
water_drop
Avg rainfall
0.7 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
12.8 km/h (Gentle breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
42.5%
wb_twilight
Sunrise
06:45
nightlight
Sunset
19:13
About Casper
Learn more about the host city, Casper.
Casper is a city in Central Wyoming with a population of 59,000 people (2020). If you're passing through the state, Casper is a likely choice for an overnight stop or as a place to find food and supplies before heading to the national parks in the state's northwestern corner or to the forests located to the southeast or to the north.
