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3H Trail Half Marathon


Saturday, August 3, 2024

Half Marathon

$70 7:30AM EDT Price increases after June 27, 2024 at 11:59pm EDT
Open to ages 13 - 99.

Course Description


The race is run entirely on the Dahlgren Railroad Heritage Trail which is a converted railroad bed and provides solid footing with little or no roots.  This trail is flat, smooth, and fast with a variety of surfaces ranging from dirt, gravel, grass, and pine needles.  
The course is an out and back that starts at the eastern end of the trail and heads west from the start for ~6.5 miles before turning back.  The volunteers from Friends of the Dahlgren Rail Heritage Trail do an excellent job of ensuring that the trail is in peak shape for the race!

The trees along the trail ensure almost 100% shade during the run.

About the Trail

The 16 mile Dahlgren Railroad Heritage Trail follows the route of the old Dahlgren Branch rail line, stretching across King George County just south of the Potomac River in Virginia's Northern Neck. The trail is open for walking, running, cycling and other recreational non-motorized uses while preserving 240 acres of wildlife and natural beauty.
The Friends of the Dahlgren Railroad Heritage Trail is a 501(c)3 Nonprofit group that is volunteer-based and works to develop, preserve, and maintain this historic rail-to-trail greenway.
Please consider joining us in support of the Friends of the DHRT by donating to the trail HERE!


DHRT 50K - Same Day!

Is the Half Marathon distance not enough for you? Check out this 50K - starts 1 hour earlier than the half!



Overall: Top 3 Men and Women. 
Cash prizes of $100, $75, $50

Age Groups:  Top 3 Men and Women
19 & Under, 20-29, 30-39, 40-49, 50-59, 60-69, 70 & Over

Overall awards are based on gun time - the first 3 males and first 3 females to cross the finish line. 
Age group awards are based on chip times. Runners not receiving an overall award are eligible for age group awards.


King George Trail Series

This trail series consists of 3 unique races that cover different segments of the Dahlgren Railroad Heritage Trail.  

2024 Race Schedule:
Dahlgren Half Marathon - February 17, 2024
Sheetz-to-Sheetz Run - April 6, 2024 (SOLD OUT)
3H Half Marathon - August 3, 2024
*Or DHRT 50K - August 3, 2024

Complete all 3 races and you will get a special finisher's medal and prize.  Sheetz-to-Sheetz has SOLD OUT! If you are registered and would like to participate, you can select the Half Marathon bundle to register for the other 2 races in the series. 

Race Swag

All participants will receive a custom finisher medal and a technical tank top or a tech t-shirt.  You can make your selection between the tank or t-shirt during registration. Be sure to register early to beat the shirt deadline!  

We'll have food and drinks waiting for you at the finish line!

Price Increases

Where To Stay

The Holiday Inn Express is conveniently located within walking distance to the Start/Finish.
Contact the hotel to book your stay and receive a discounted rate of $119/night!

16348 Gateway Lane, King George, VA 22485
(540) 625-2034

Packet Pickup and Race Day Parking

Packet Pickup:

August 2, 2024: from 1:30-3pm, location TBD
August 2, 2024: Anytime Fitness, 16453 Merchants Lane, King George, VA from 4:30pm-6:30pm
August 3, 2024: 6:30 - 7:15am at the trailhead

Race day parking is available at the King George Gateway Shopping Center. There is plenty of parking at the shopping center and it's located near the race start!

Road Crossings & Aid Stations

There will be a crossing guard that will help at major road crossings, but please make sure you look both ways before crossing.

There will be water near miles 3.3, 6.5, 9.8 and 12.2. There will also be Gatorade at miles 3.3, 6.5, and 9.8. Food at the Panorama
Aid Station is mainly there for the 50K participants, but if you are
desperate for a burst of energy at mile 9.8, please grab a snack!

3H Half Marathon Historical Data

Race History

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