Tucson 50K

Tucson, AZ, USA · December 13, 2026·
partly-cloudy-day42°·60° high·Light·Dry
10
Register

Race Day Weather

partly-cloudy-day
42°at start
64° high
Breezy
Dry
Your goal
0:00:00

Cool start — fast day potential, big temp swing

A cool 42°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 64°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 51 days
partly-cloudy-night10
partly-cloudy-night10
partly-cloudy-night10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
clear-day9
partly-cloudy-day9
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day9

Pace Calculator

31.1mi
0:00:00
HH:MM:SS
Pace
—

Enter a finish time to see what race day does to it.

Get forecast alerts for Tucson 50K

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Plan

Get your personalized Tucson 50K race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The Tucson 50K starts at Biosphere 2 near Oracle, Arizona, and follows the marathon course down State Route 77 toward Tucson before running about five miles further than the marathon distance. It is a point-to-point route that descends steadily from the foothills of the Santa Catalina Mountains through Catalina and Oro Valley. The final miles run along the Canada del Oro River Park bike path to the finish at Pima Community College Northwest Campus, held on the Sunday of race weekend.

Race weekend

Sunday, December 13
7:15 AM50K (31.1 mi)
7:15 AMMarathon (26.2 mi)7:15 AMHalf Marathon (13.1 mi)
Area Map

Course Map

FAQ

When is the 2026 Tucson 50K?

The 2026 Tucson 50K will be held on Sunday December 13, 2026.

What will the weather be like for the 2026 Tucson 50K?

The forecast calls for a high of 65°F and a low of 41°F with a 4% chance of rain. Check our detailed hourly forecast above for the best 50K race plan.

Historical Weather

Based on 22 years of data
Avg Temp
55°F
L:45° H:65°
RunScore
9
Conditions
Rain Freq
0%
0 of 22 yrs
Wind7mph
Dew29°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-night
54°/79°-
7
2024
clear-night
44°/68°-
9
2023
clear-night
48°/64°-
10
2022
clear-night
39°/61°-
9
2021
clear-night
50°/70°-
8
2019
clear-night
49°/67°-
8
2018
cloudy
47°/60°-
9
2017
clear-night
43°/69°-
10
2016
clear-night
43°/65°-
10
2015
clear-night
46°/73°-
9
2014
clear-night
46°/66°-
8
2013
cloudy
43°/53°-
10
2012
clear-night
44°/65°-
10
2010
clear-night
46°/68°-
9
2009
clear-night
46°/65°-
9
2008
clear-night
43°/62°-
10
2007
partly-cloudy-night
46°/57°-
10
2006
clear-night
45°/64°-
9
2005
clear-night
37°/58°-
10
2002
clear-night
40°/59°-
10
2000
clear-night
50°/67°-
9
1999
clear-night
45°/65°-
10