
From the Organizer
The Silver Comet Half Marathon & Full Marathon are out and back USATF Certified races held entirely on the beautiful Silver Comet Trail just outside Atlanta in Mableton Georgia the last Saturday of each October. The marathon is a Boston Qualifier event.
Our grass root events are perfect for first timers or competitive runners seeking PRs. The Silver Comet Trail is beautiful and provides a flat and fast course.
Please find more information at SilverCometRaces.com
Runners may also be interested in the Silver Comet 10K on the 2nd Saturday of March every year - continues to be the flattest and the fastest 10K in the Atlanta metro area! Come snag your best AJC Peachtree Road Race qualifying time! This is a point to point race starting from 4875 Floyd Road, Mableton GA to Finish at Silver Comet Trailhead 4573 Mavell Road, Smyrna GA
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
67°
Typical Low
45°
Chance of Rain
25%
Based on US Climate Normals data from Mableton 1 N, 2 mi from the venue.
Host City
Population
42,403
as of 2023
Elevation
980 ft
Nearest Airport
ATL
Hartsfield Jackson Atlanta International Airport · 17 mi
Time Zone
Eastern Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Silver Comet Half & Full Marathon, put it on the calendar, and turn “someday” into a start date.
145
Days to train
Coming Up
5K RUN, WALK & STROLLER ROLL
2 miles away
Lutzie 43 Road Race
9 miles away
Art at the Springs 5K
7 miles away
MONTFORD POINT MARINES 5K RACE
Less than a mile away
From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
Silver Comet Half & Full Marathon
Oct 31, 2026