Mystery Mountain Marathon

Chatsworth, GA, USA · October 17, 2027·
partly-cloudy-day46°→ 60° finish·Light·Dry
9
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Mystery Mountain Marathon race day weather

partly-cloudy-day
46°at start
60° at finish
Light
Dry
Your goal
0:00:00

Cool morning, warming finish

Runners will face a cool start at 46°F, rising to 60°F by the finish. Light winds from the NW will be a minor factor, with some segments experiencing headwinds, particularly between miles 4-10 and 12-15. As the course descends to mile 19, temperatures will warm to around 58°F, encouraging runners to hydrate regularly and pace conservatively, especially on climbs.

This course drops 984 ft to its low point and back, so we look at it at 2 points, not just the start line. In a typical year, at 9:00/mi, you start at 46° and finish around 11:55 AM in 60°.

Race day forecast available in 326 days
Along your raceStart line only
partly-cloudy-night10
partly-cloudy-night10
partly-cloudy-day10
Start
partly-cloudy-day10
mi 7
partly-cloudy-day10
mi 13
partly-cloudy-day8
Finish
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day8

Pace Calculator

26.2mi
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Race Plan

Get your personalized Mystery Mountain Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

About the Mystery Mountain Marathon

Marathon and 12-mile trail races traversing difficult, sometimes technical but stunningly beautiful trails, featuring panoramic views of fall foliage displayed on the surrounding mountains. Climbing and descending for about 5,500 feet of elevation gain, runners will enjoy single track, rugged mountain bike, and smooth horse trails while running over and around Fort Mountain, passing the mysterious rock wall built at the top of the mountain over 1,000 years ago. Source

Race weekend

Sunday, October 17
8:00 AMMarathon (26.2 mi)
8:00 AM12M (12.0 mi)

Mystery Mountain Marathon FAQ

When is the 2027 Mystery Mountain Marathon?

The 2027 Mystery Mountain Marathon will be held on Sunday October 17, 2027.

Is the Mystery Mountain Marathon a Boston Marathon Qualifier?

No, the Mystery Mountain Marathon is NOT a Boston Marathon qualifier.

What is the time limit for the Mystery Mountain Marathon?

The time limit for the Mystery Mountain Marathon is 8 hours.

What will the weather be like for the 2027 Mystery Mountain Marathon?

The forecast calls for a high of 68°F and a low of 47°F with a 6% chance of rain.

What is the elevation gain of the Mystery Mountain Marathon?

The Mystery Mountain Marathon course has about 5,500 ft (1,676 m) of climbing.

What is the weather usually like for the Mystery Mountain Marathon?

Over the 18 years racecast.io has race-day weather for (2008 to 2026), it averaged 51°F at the start and 67°F by a typical finish. Rain fell during race hours in 1 of those years (2019).

What was the hottest Mystery Mountain Marathon?

Of the 18 years on record, 2017 was the warmest, reaching 82°F during race hours. The coldest start was 2008, at 33°F.

What was the windiest Mystery Mountain Marathon?

Of the 18 years on record, 2016 was the windiest, with wind averaging 16 mph during race hours. The calmest was 2008, at 0 mph.

Mystery Mountain Marathon weather history

Based on 18 years of data
Avg Temp
59°F
L:51° H:67°
RunScore
7
Conditions
Rain Freq
6%
1 of 18 yrs
Wind3mph
Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
42°/60°-
10
2025
partly-cloudy-day
51°/69°-
7
2024
clear-day
51°/74°-
6
2023
clear-day
39°/61°-
9
2022
partly-cloudy-day
42°/59°-
9
2021
clear-day
63°/76°-
4
2019
cloudy
54°/64°Light
8
2018
cloudy
57°/67°-
7
2017
partly-cloudy-day
62°/82°-
4
2016
clear-day
53°/69°-
8
2015
cloudy
58°/65°-
6
2014
clear-day
63°/74°-
4
2013
clear-day
52°/74°-
6
2012
cloudy
60°/65°-
6
2011
clear-day
55°/68°-
7
2010
clear-day
47°/73°-
7
2009
clear-night
38°/59°-
10
2008
clear-night
33°/56°-
10