Tucson Shamrock Half Marathon
Race Day Weather
Cool start — fast day potential, big temp swing
A cool 48°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 71°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.
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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.
