Antelope Island Half Marathon

Antelope Island, UT, USA · October 8, 2027·
partly-cloudy-day47°·56° high·Light·Dry
10
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Antelope Island Half Marathon race day weather

partly-cloudy-day
47°at start
67° high
Light
Dry
Your goal
0:00:00

Cool start — fast day potential, big temp swing

A cool 47°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 67°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 321 days
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Race Plan

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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.

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About the Antelope Island Half Marathon

The Antelope Island Marathon Half Marathon runs 13.1 miles on Antelope Island, the largest island in the Great Salt Lake. It starts and finishes near the marina and follows the same out-and-back route as the marathon, turning around at mile 6.55. The road rolls over several small hills, with the lake to the east and the island's mountains to the west, and bison are a common sight along the way.

Race weekend

Friday, October 8
7:00 AMMarathon (26.2 mi)
8:15 AMHalf Marathon (13.1 mi)
9:00 AM10K (6.2 mi)
9:00 AM5K (3.1 mi)
Area Map
Course Map

Antelope Island Half Marathon FAQ

When is the 2027 Antelope Island Half Marathon?

The 2027 Antelope Island Half Marathon will be held on Friday October 8, 2027.

What will the weather be like for the 2027 Antelope Island Half Marathon?

The forecast calls for a high of 68°F and a low of 45°F with a 7% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

What is the weather usually like for the Antelope Island Half Marathon?

Over the 10 years racecast.io has race-day weather for (2017 to 2026), it averaged 49°F at the start and 56°F by a typical finish. Rain fell during race hours in 1 of those years (2021).

What was the hottest Antelope Island Half Marathon?

Of the 10 years on record, 2024 was the warmest, reaching 69°F during race hours. The coldest start was 2019, at 28°F.

What was the windiest Antelope Island Half Marathon?

Of the 10 years on record, 2026 was the windiest, with wind averaging 13 mph during race hours. The calmest was 2019, at 4 mph.

Antelope Island Half Marathon weather history

Based on 10 years of data
Avg Temp
52°F
L:48° H:56°
RunScore
9
Conditions
Rain Freq
10%
1 of 10 yrs
Wind8mph
Dew33°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
58°/66°-
8
2025
partly-cloudy-day
61°/65°-
7
2024
clear-day
61°/69°-
9
2023
clear-day
49°/56°-
10
2022
clear-day
52°/62°-
9
2021
rain
46°/48°Light
9
2020
clear-day
54°/65°-
9
2019
clear-day
28°/38°-
10
2018
clear-day
40°/48°-
10
2017
clear-day
34°/38°-
10