Tucson Shamrock Half Marathon

Tucson, AZ, USA · March 14, 2027
clear-day48°·60° high·Light·Dry
10
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Course
Race Info
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Race Day Weather

clear-day
48°at start
71° high
Breezy
Dry
Your goal
0:00:00

Cool start, warming up

Runners will face a temperature rise from 48°F at the start to 67°F by the finish, with low humidity at 30% making conditions comfortable. Winds will be light, peaking at 8 mph from the SSW, not significantly impacting performance. With the warming trend, runners should consider adjusting their pace as temperatures rise.

Race day forecast available in 135 days
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13.1mi
0:00:00
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Race Info

The Tucson Shamrock Half Marathon takes runners along dedicated asphalt and concrete trails on the Rillito River Loop, starting and finishing at Brandi Fenton Memorial Park. The St. Patrick's-themed race also offers 10K and 5K distances. It is organized by StartLine Racing, an Arizona race management company that runs several similarly-themed events across the state.

Website

Race weekend

Sunday, March 14
7:30 AMHalf Marathon (13.1 mi)
7:45 AM10K (6.2 mi)
8:00 AM5K (3.1 mi)
Area Map

Course Map

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FAQ

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When is the 2027 Tucson Shamrock Half Marathon?

The 2027 Tucson Shamrock Half Marathon will be held on Sunday March 14, 2027.

What is the time limit for the Tucson Shamrock Half Marathon?

The time limit for the Tucson Shamrock Half Marathon is 4 hours.

What will the weather be like for the 2027 Tucson Shamrock Half Marathon?

The forecast calls for a high of 73°F and a low of 47°F with a 3% chance of rain.

Historical Weather

Based on 3 years of data
Avg Temp
52°F
L:47° H:59°
RunScore
10
Conditions
Rain Freq
0%
0 of 3 yrs
Wind4mph
Dew29°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2026 Tucson Shamrock Half Marathon

Clear conditions throughout the day.

2026
clear-day
51°/64°-
9

2025 Tucson Shamrock Half Marathon

Clear conditions throughout the day.

2025
clear-day
41°/54°-
10

2024 Tucson Shamrock Half Marathon

Clear conditions throughout the day.

2024
clear-day
50°/59°-
10

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Free guidesFueling Guide·Race Morning Guide·Race Day Gear Guide·Pacing Strategy Guide

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