2027 Shamrock Marathon - Mar 21 Countdown

Q: When is the 2027 Shamrock Marathon and what time does it start?

The full Shamrock Marathon is on Sunday, March 21, 2027, the Sunday of Shamrock Weekend (the half marathon and 8K run on Saturday, March 20). The full marathon starts at 7:30 a.m. Eastern Time near 42nd Street and Atlantic Avenue in the Virginia Beach resort area. Shamrock is held around St. Patrick's Day each year, so it is a popular early-spring goal race.

Q: Is the Shamrock Marathon course flat and fast?

Yes. It is one of the flattest and fastest certified marathons on the East Coast, with only about 270 ft (82 m) of total elevation gain over 26.2 miles and no real hills. The course runs largely out-and-back along the Virginia Beach oceanfront and Shore Drive, finishing on the boardwalk by the Atlantic. The main wildcard is coastal wind, not terrain.

Q: Is the Shamrock Marathon a Boston qualifier?

Yes. The course is USATF-certified (#VA22041RT) and a Boston-qualifying race — the 2027 marathon counts toward 2028 Boston Marathon entry. Combined with the flat profile, it is a genuinely strong BQ-attempt race for runners who want fast, honest splits. Check your target time on the Boston qualifying calculator and dial in pacing with the pace calculator.

Q: What is the time limit for the Shamrock Marathon?

The full marathon has a generous 7.5-hour course time limit (about a 17:09 per mile pace) from the 7:30 a.m. start, so it accommodates a wide range of runners and walkers. That makes it both a fast course for those chasing a PR and a welcoming first marathon for those mainly aiming to finish.

Q: Where does the Shamrock Marathon course go?

It is a coastal out-and-back. From the resort area near 42nd Street, runners head north on Shore Drive past First Landing State Park and loop through Fort Story near the Cape Henry lighthouse, then return south through the resort district and toward Rudee Inlet before the finish on the Virginia Beach Boardwalk overlooking the Atlantic Ocean. Crowds and live music line the resort and boardwalk sections, with quieter stretches in the park and residential miles.

Q: How do I register for the Shamrock Marathon?

Registration is handled online through the official Shamrock Marathon site; there is no lottery — entry is first-come, first-served until it fills, and prices rise as race day approaches, so registering early saves money. The standard full-marathon entry runs about $130. The weekend also offers a half marathon, 8K and a 1-mile run, plus combination challenges.

Q: How big is the Shamrock Marathon?

The full marathon is mid-sized, with about 2,435 finishers in 2026. Across the whole St. Patrick's weekend — marathon, half marathon, 8K and 1-miler combined — Shamrock draws around 25,000 participants to the Virginia Beach oceanfront, but the full-marathon field itself stays manageable and never feels crowded once the distances split.

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Race Information

Race	2027 Shamrock Marathon - Mar 21
City	Virginia Beach
Date	2027-03-21 at 07:30
Field Size	~2,435 runners
Time Limit	7 hours 30 min
Cutoff pace	10:40/km
Timezone	America/New_York
Official Site	J&A Racing

Race Day Weather

Average Temperature	9.5°C / 49°F
Humidity	80%
Wind	26.2 km/h
Rain Chance	34%
Typical Conditions	Cool, breezy mid-March coastal Virginia morning — temperatures around 46 degrees F (8 degrees C) at the 7:30 a.m. start, with an onshore Atlantic wind that can make it feel colder

What to Prepare: A mid-March morning at the Virginia Beach oceanfront usually starts in the mid-40s degrees F (around 8 degrees C) and stays cool, so it is great racing weather for a fast time. The catch is wind off the Atlantic, which can be a stiff headwind on the exposed Shore Drive and boardwalk stretches. Dress in throwaway layers you can shed after the first few miles, wear gloves for the start, and check the forecast for a coastal front the week before.

Based on historical averages for race week. Use our Weather Score Calculator and What to Wear Guide for personalized advice.

Wind Impact on Race Day

Wind at 26.2 km/h can affect your marathon pace by 5-15 seconds per kilometer. Headwinds slow you down exponentially — a 20 km/h wind costs more than twice a 10 km/h wind.

Calculate your wind-adjusted pace →

Race-Week Climate

Based on 20 years of race-week weather (2005-2024), MERRA-2 reanalysis

	Cooler	Typical	Warmer
Temperature	4.9°C	9°C	15°C
Dew point	-0.6°C	5.6°C	13°C

Wet-day chance: 34% Runnability: 70/100

Data: NASA POWER (MERRA-2 reanalysis), NASA Langley Research Center

Course Profile

Course Type	Flat coastal out-and-back
Elevation Gain	82m
Terrain	Road (paved oceanfront avenues, Shore Drive and boardwalk, flat)
Profile	One of the flattest and fastest certified marathons on the East Coast, and built for a fast time. The course starts near 42nd Street and Atlantic Avenue in the Virginia Beach resort area and runs largely out-and-back: north along Shore Drive past First Landing State Park and a loop through Fort Story near the Cape Henry lighthouse, then back south through the resort district and down toward Rudee Inlet before the signature finish on the world-famous Virginia Beach Boardwalk overlooking the Atlantic Ocean. Total elevation gain is minimal — roughly 270 ft (about 82 m) over the full 26.2 miles, with no real hills — so splits stay honest as long as the wind cooperates. The course is USATF-certified (#VA22041RT) and a Boston qualifier, with a generous 7.5-hour time limit. The one variable is weather: an onshore Atlantic wind can turn the exposed Shore Drive and oceanfront miles into a headwind, so check conditions and plan an even or slightly conservative early effort.
Boston Qualifier	Yes — Check your BQ time

Prepare for 2027 Shamrock Marathon - Mar 21

Use our free training tools to get race-ready:

Running Pace Calculator — Min/km, Finish Time & Pace Chart

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What to Wear Running by Temperature — Clothing Guide

Enter temperature, wind, and rain to get specific clothing picks for head, torso, legs, hands, and f...

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Wind Effect on Running — How Much Does Wind Slow You?

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Marathon Predictor — 5K, 10K & Half Marathon Race Predictor

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Frequently Asked Questions

When is the 2027 Shamrock Marathon and what time does it start?

The full Shamrock Marathon is on Sunday, March 21, 2027, the Sunday of Shamrock Weekend (the half marathon and 8K run on Saturday, March 20). The full marathon starts at 7:30 a.m. Eastern Time near 42nd Street and Atlantic Avenue in the Virginia Beach resort area. Shamrock is held around St. Patrick's Day each year, so it is a popular early-spring goal race.

Is the Shamrock Marathon course flat and fast?

Yes. It is one of the flattest and fastest certified marathons on the East Coast, with only about 270 ft (82 m) of total elevation gain over 26.2 miles and no real hills. The course runs largely out-and-back along the Virginia Beach oceanfront and Shore Drive, finishing on the boardwalk by the Atlantic. The main wildcard is coastal wind, not terrain.

Is the Shamrock Marathon a Boston qualifier?

Yes. The course is USATF-certified (#VA22041RT) and a Boston-qualifying race — the 2027 marathon counts toward 2028 Boston Marathon entry. Combined with the flat profile, it is a genuinely strong BQ-attempt race for runners who want fast, honest splits. Check your target time on the Boston qualifying calculator and dial in pacing with the pace calculator.

What is the time limit for the Shamrock Marathon?

The full marathon has a generous 7.5-hour course time limit (about a 17:09 per mile pace) from the 7:30 a.m. start, so it accommodates a wide range of runners and walkers. That makes it both a fast course for those chasing a PR and a welcoming first marathon for those mainly aiming to finish.

Where does the Shamrock Marathon course go?

It is a coastal out-and-back. From the resort area near 42nd Street, runners head north on Shore Drive past First Landing State Park and loop through Fort Story near the Cape Henry lighthouse, then return south through the resort district and toward Rudee Inlet before the finish on the Virginia Beach Boardwalk overlooking the Atlantic Ocean. Crowds and live music line the resort and boardwalk sections, with quieter stretches in the park and residential miles.

How do I register for the Shamrock Marathon?

Registration is handled online through the official Shamrock Marathon site; there is no lottery — entry is first-come, first-served until it fills, and prices rise as race day approaches, so registering early saves money. The standard full-marathon entry runs about $130. The weekend also offers a half marathon, 8K and a 1-mile run, plus combination challenges.

How big is the Shamrock Marathon?

The full marathon is mid-sized, with about 2,435 finishers in 2026. Across the whole St. Patrick's weekend — marathon, half marathon, 8K and 1-miler combined — Shamrock draws around 25,000 participants to the Virginia Beach oceanfront, but the full-marathon field itself stays manageable and never feels crowded once the distances split.