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Running

Silver Comet Half & Full Marathon

Date
October 31, 2026
Distance
26th Annual Silver Comet Half Marathon · 15th Annual Silver Comet Marathon
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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

26th Annual Silver Comet Half Marathon7:45 AMRegister →
15th Annual Silver Comet Marathon7:15 AMRegister →

Weather

Typical Conditions

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.

Sunrise 7:57 AMSunset 6:48 PMDaylight 10h 51m

Host City

About Mableton, GA

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

What Are You
Waiting For?

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

Race
Silver Comet Half & Full Marathon
Date
October 31, 2026

From Endurance Grid

About This Sport

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.

Read the Guide

Running

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)

What is the Silver Comet Half & Full Marathon?
Silver Comet Half & Full Marathon is a running race held in Mableton, Georgia on October 31, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
When and where is the Silver Comet Half & Full Marathon?
Saturday, October 31, 2026 in Mableton, Georgia at Floyd Road SW, Mableton, GA. Check the event page for exact start times and wave schedules.
How do I register for the Silver Comet Half & Full Marathon?
Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.

Silver Comet Half & Full Marathon

Oct 31, 2026

Register →