Shamrock Half Marathon

Virginia Beach, VA, USA · March 21, 2027·
partly-cloudy-day47°·47° high·Breezy·Dry
10
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Race Day Weather

partly-cloudy-day
47°at start
50° high
Windy
Dry
Your goal
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Cool start — fast day potential, moderate wind

A cool 47°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Moderate winds around 15mph may affect pacing on open sections of the course. Moderate humidity at 74% is worth noting for effort level, especially in later miles.

Race day forecast available in 162 days
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Pace Calculator

Distance: 13.1mi
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Race Plan

Get your personalized Shamrock Half Marathon race plan

True Effort pacing, weather-adjusted mile splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

Race Conditions
Weather Splits
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Carb Tracker
Spectator Guide
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Race Info

The Shamrock Half Marathon shares the marathon's oceanfront start and Shore Drive stretch, starting at 42nd Street and Atlantic Avenue and finishing on the Virginia Beach Boardwalk near the King Neptune statue. The route runs north along tree-lined Shore Drive past First Landing State Park before turning back through Virginia Beach neighborhoods to the finish. It carries a 4-hour time limit, an 18:19-per-mile pace. The course record is 1:02:56 for men (Stephen Chemlany, 2009) and 1:11:27 for women (Helen Jemutai, 2012).

Race weekend

Saturday, March 20
7:30 AM8K (5.0 mi)
Sunday, March 21
7:30 AMMarathon (26.2 mi)
7:30 AMHalf Marathon (13.1 mi)
Area Map

Course Map

FAQ

When is the 2027 Shamrock Half Marathon?

The 2027 Shamrock Half Marathon will be held on Sunday March 21, 2027.

What is the time limit for the Shamrock Half Marathon?

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

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

The forecast calls for a high of 54°F and a low of 46°F with a 10% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 25 years of data
Avg Temp
48°F
L:47° H:50°
RunScore
9
Conditions
Rain Freq
20%
5 of 25 yrs
Wind11mph
Dew40°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-night
55°/61°-
7
2025
partly-cloudy-night
63°/66°-
6
2024
cloudy
57°/61°-
7
2023
partly-cloudy-night
42°/44°-
10
2022
partly-cloudy-night
65°/70°-
5
2019
partly-cloudy-night
41°/44°-
10
2018
cloudy
41°/43°-
10
2017
rain
38°/42°Moderate
9
2016
rain
47°/48°Light
9
2015
partly-cloudy-night
50°/50°-
10
2014
partly-cloudy-night
46°/47°-
10
2013
cloudy
43°/43°-
10
2012
partly-cloudy-night
54°/56°-
8
2011
partly-cloudy-night
43°/46°-
10
2010
clear-night
53°/59°-
10
2009
clear-night
30°/42°-
10
2008
rain
46°/48°Light
10
2007
partly-cloudy-night
30°/38°Light
10
2006
clear-night
38°/41°-
10
2005
rain
45°/46°Light
10
2004
cloudy
61°/62°-
7
2003
partly-cloudy-night
48°/52°-
10
2002
cloudy
48°/48°-
10
2001
partly-cloudy-night
43°/44°-
10
2000
partly-cloudy-night
45°/47°-
10