Mystery Mountain Marathon & 12 Miler
External Event
Distance
26.2 mi
Pace
All paces (Marathon: Intermediate/Advanced, 12 Miler: Intermediate)
Terrain
Mountainous
Difficulty
Challenging
About this run
The Mystery Mountain Marathon and 12 Miler will take place in Chatsworth, Georgia on October 18, 2026. This event offers participants the choice between a full marathon (42.2 km) and a 12-mile distance. Runners can expect a challenging course through the mountainous terrain surrounding Chatsworth. The "Mystery" aspect suggests a unique and potentially unpredictable race experience, encouraging participants to embrace the adventure. This event is ideal for runners seeking a scenic and demanding race. The marathon distance is suited for experienced runners, while the 12-miler provides a significant challenge for those looking for a shorter but still demanding event.
Who it's for
This event is designed for runners who enjoy challenging terrain and significant distances. The marathon is best suited for experienced marathoners, while the 12-miler will appeal to intermediate to advanced runners looking for a substantial distance challenge.
What to expect
- Arrive early to allow time for parking and to get to the start line.
- The marathon course is 42.2 km, requiring significant training and endurance.
- The 12-miler offers a substantial distance for those not ready for a full marathon.
- Be prepared for mountainous terrain, which may include varied surfaces and significant elevation changes.
- Check the weather forecast closer to the event date and dress accordingly. Layers are often recommended for mountain races.
Good to know
- Packet pickup details will be available on the official registration page.
- Race start times and specific course information should be confirmed on the registration site.
Typical conditions
For events around October 2026 in Chatsworth, GA, United States: Typical autumn conditions in this region — conditions can change quickly; confirm race-day guidance on the official page.
How to prepare
Marathon training typically spans 12–16 weeks with a progressive long run and recovery weeks. Do not invent a course strategy here — check the official site for start waves, cutoffs, and gear rules.
Best marathons to run in 2026Getting there
This event is listed in Chatsworth, GA, United States. Confirm the exact start venue, parking, and transit options on the official registration page.
Frequently asked questions
What distances are offered?+
The event features a Marathon (42.2 km) and a 12 Miler.
Where is the race held?+
The race takes place in Chatsworth, GA.
When is the race date?+
The race is scheduled for October 18, 2026.
How do I register?+
Registration can be completed through the official event page: https://getguts.com/mystery-mountain-marathon-12-miler.html
What is the course like?+
The course is expected to be mountainous, offering a challenging trail experience.
Are there any cut-off times?+
Information on cut-off times, if any, should be checked on the official registration page.
What about parking?+
Specific parking information will be available on the event's official registration page.
Where can I find more details about the event?+
For the most up-to-date information, including course maps and start times, please visit the official registration page: https://getguts.com/mystery-mountain-marathon-12-miler.html
Registration is handled by the official event organizer
Know a local group? Host a community run in Chatsworth



