Silver Comet Half & Full Marathon
The Silver Comet Half Marathon offers a fast, flat course on a scenic trail outside Atlanta.
Race Date
Oct 31, 2026
Location
Mableton, GA
Quick facts
- Date
- Saturday, October 31, 2026
- Location
- Mableton, Georgia
- Distance
- Half marathon (13.1 mi) + 26.2 Miles
- Course
- Point to Point
- Terrain
- Road
- USATF certified
- Yes
- Finishers on record
- 16,357
Highlights
Good For
Atmosphere
Course
The Experience
The Silver Comet Half Marathon, first run in 2001 and now in its 25th year, is a popular choice for runners seeking a fast, flat course. This USATF-certified event takes place entirely on the Silver Comet Trail, a paved path known for its scenic beauty and minimal elevation change.
With a median field size of around 187 finishers and growing, the race attracts runners from approximately 7 states. The course is designed for speed, with a net drop and zero start/finish separation, making it a prime location for personal bests and Boston Qualifier attempts for the full marathon. Runners can expect typical race-day temperatures between 49-65°F.
While the repeat-runner loyalty is modest at about 4%, the event's straightforward, efficient nature appeals to both first-timers and competitive athletes looking for a well-organized race. The giveaway includes a T-shirt, and the event is held on the last Saturday of October.
Race-provided description
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
Logistics
Race Day
Saturday, October 31, 2026
Start Time
7:45 AM
Giveaway
T-Shirt
Start Location
Floyd Road SW, Mableton, GA, 30126
Course Info
USATF CertifiedCourse Type
Point to Point
Terrain
road
Scenery
Park
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
USATF Certified Course
GA23067WC · Silver Comet Trail Half Marathon
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Quality Score
Standout6825 years running
~187 finishers a year
growing or steady
4% returning runners
USATF certified · 5 timing sources
runners from 7 states
winner 1:24:52
typical high 65°F
Race Day Weather
5-year historical avgStart (Low)
49°
Afternoon (High)
65°
Pleasant conditions — light layers at start, comfortable by finish
0.1"
Precipitation
11 mph
Wind
77%
Humidity
Historical Finish Times
How 16,357 finishers actually crossed the line across 25 years.
Most recent
2025
Total finishers
16,357
Median time
2:15:19
Latest turnout
251
States
46
Turnout by year
2018–2025
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the Silver Comet Half & Full Marathon?
The Silver Comet Half & Full Marathon is held on Saturday, October 31, 2026, starting at 7:45 AM.
Where does the Silver Comet Half & Full Marathon take place?
It takes place in Mableton, Georgia.
What distances does the Silver Comet Half & Full Marathon offer?
The half marathon (13.1 miles), plus 26.2 Miles.
Is the Silver Comet Half & Full Marathon course flat and good for a PR?
The Silver Comet Half & Full Marathon is a ultra-flat, point to point course. The course is USATF-certified, so finish times can be used for qualifying.
How many people run the Silver Comet Half & Full Marathon?
HalfRuns has finish records for 16,357 runners who have completed the Silver Comet Half & Full Marathon.
HalfRuns editorial — independent, no paid placement.
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