Kiawah Island Marathon

Kiawah Island, SC, USA · December 12, 2026·
partly-cloudy-day60°·61° high·Windy·Dry
7
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Kiawah Island Marathon race day weather

partly-cloudy-day
60°at start
61° high
Windy
Dry
Your goal
0:00:00

Light crosswind, steady conditions ahead

Runners will face a temperature rise from 60°F at the start to 61°F by finish, with an average humidity of 70%. A crosswind will be present from miles 1-4 and 6-27, shifting to a tailwind in mile 5. It's advisable to maintain a steady pace throughout and stay hydrated, particularly as the humidity may feel heavier.

Race day forecast available in 18 days
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Pace Calculator

26.2mi
0:00:00
HH:MM:SS
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Kiawah Island Marathon route and elevation

The Kiawah Island Marathon course has about 11 ft (3 m) of climbing and 11 ft (3 m) of descent, and finishes near the elevation it starts. It is flatter than 86% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. It has no steep miles: no mile climbs more than 20 ft (6 m).

What the hills cost

The hills change finish times by less than 0.2% here, under half a minute for a 4:00 runner.

Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.

Even-effort splits for a 3:30, 4:00 or 4:30 finish
The Kiawah Island Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
16 ft6 ft8:009:0810:17
25 ft7 ft7:599:0910:17
34 ft5 ft8:019:0810:17
415 ft10 ft8:029:1210:21
517 ft17 ft8:019:0910:18
614 ft15 ft8:009:0910:17
715 ft13 ft8:019:1010:19
814 ft17 ft8:009:0810:17
98 ft9 ft8:009:0910:17
104 ft7 ft7:599:0810:16
116 ft7 ft8:009:0810:17
126 ft4 ft8:019:1010:19
1310 ft7 ft8:029:1010:18
1410 ft9 ft8:009:0910:18
156 ft11 ft7:599:0810:16
1614 ft9 ft8:039:1110:21
177 ft11 ft7:599:0810:16
1817 ft13 ft8:029:1110:20
1912 ft12 ft8:019:0910:17
2010 ft9 ft8:009:0910:17
213 ft8 ft7:599:0710:17
226 ft1 ft8:039:1210:20
2316 ft18 ft7:599:0810:17
2411 ft10 ft8:019:1010:18
258 ft10 ft8:009:0810:17
266 ft4 ft8:019:1010:18
Last 0.21 ft0 ft1:472:022:18

Explore the Kiawah Island Marathon course with the weather and your pace along the route, or compare it with other races.

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.

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

About the Kiawah Island Marathon

The Kiawah Island Marathon starts and finishes at the West Beach Conference Center on Kiawah Island, South Carolina. The course runs through the island's maritime forest, marsh, and residential neighborhoods before returning to the beach village. First run in 1978, the race is held every December; the 2026 edition is the 48th. Race weekend also includes a half marathon, 5K, and one-mile fun run, all starting from the same West Beach location. Source

Race weekend

Friday, December 11
3:00 PM5K (3.1 mi)
3:00 PM1 Mile Fun Run (1.0 mi)
Saturday, December 12
8:00 AMMarathon (26.2 mi)
8:00 AMHalf Marathon (13.1 mi)

Kiawah Island Marathon FAQ

When is the 2026 Kiawah Island Marathon?

The 2026 Kiawah Island Marathon will be held on Saturday December 12, 2026.

Is the Kiawah Island Marathon a Boston Marathon Qualifier?

Yes, the Kiawah Island Marathon is an official Boston Marathon qualifier.

What is the time limit for the Kiawah Island Marathon?

The time limit for the Kiawah Island Marathon is 6.5 hours.

What will the weather be like for the 2026 Kiawah Island Marathon?

The forecast calls for a high of 65°F and a low of 59°F with a 10% chance of rain.

What is the elevation gain of the Kiawah Island Marathon?

The Kiawah Island Marathon course has about 11 ft (3 m) of climbing and 11 ft (3 m) of descent, and finishes near the elevation it starts.

Is the Kiawah Island Marathon flat?

Yes. It has almost no climbing, and no mile climbs more than 20 ft (6 m). The hills change finish times by less than 0.2% here, under half a minute for a 4:00 runner. It is flatter than 86% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the Kiawah Island Marathon?

Over the 27 years racecast.io has race-day weather for (1999 to 2025), it averaged 47°F at the start and 59°F by a typical finish. Rain fell during race hours in 6 of those years.

What was the hottest Kiawah Island Marathon?

Of the 27 years on record, 2021 was the warmest, reaching 77°F during race hours. The coldest start was 2006, at 26°F.

What was the windiest Kiawah Island Marathon?

Of the 27 years on record, 2003 was the windiest, with wind averaging 17 mph during race hours. The calmest was 2014, at 0 mph.

Kiawah Island Marathon weather history

Based on 27 years of data
Avg Temp
53°F
L:47° H:59°
RunScore
8
Conditions
Rain Freq
22%
6 of 27 yrs
Wind8mph
Dew44°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
43°/67°-
7
2024
clear-day
50°/64°-
8
2023
partly-cloudy-day
54°/72°-
5
2022
rain
50°/54°Light
9
2021
cloudy
66°/77°-
3
2021
clear-day
44°/66°-
8
2019
rain
51°/54°Light
8
2018
clear-day
39°/56°-
10
2017
rain
39°/43°Light
10
2016
clear-day
37°/48°-
10
2015
clear-day
54°/75°-
5
2014
clear-day
36°/60°-
10
2013
rain
57°/70°Light
6
2012
partly-cloudy-day
52°/68°-
7
2011
cloudy
53°/53°-
10
2010
cloudy
44°/48°Light
10
2009
partly-cloudy-day
40°/45°Light
9
2008
clear-day
48°/56°-
9
2007
fog
48°/69°-
7
2006
clear-day
26°/46°-
10
2005
clear-day
37°/56°-
10
2004
clear-day
50°/54°-
9
2003
partly-cloudy-day
49°/54°-
8
2002
partly-cloudy-day
43°/47°-
9
2001
partly-cloudy-day
63°/71°-
6
2000
cloudy
48°/50°-
9
1999
clear-day
53°/57°-
8