Georgia · Marathon · 12 Miler
Mystery Mountain Marathon & 12-Miler
Mystery Mountain Marathon & 12-Miler is a marathon and 12 Miler event held in Chatsworth, Georgia. It was last held on October 18, 2026 and is usually run in October; the next date hasn't been announced yet. About 250 runners take part across all distances.
- Usually held
- October
- Location
- Chatsworth, GA
- Field size
- ~250 runners
Race details
- Last held
- October 18, 2026
- Usually held in
- October
- Location
- Chatsworth, Georgia
- Distances
- Marathon, 12 Miler
- Field size
- About 250 runners
- Course
- Very hilly technical trail course over Fort Mountain; ~5,500 ft official elevation gain (runner GPS totals commonly 5,000-8,000+ ft)
- Registration
- ultrasignup.com
- Official website
- getguts.com
Registration, course & weather
- Registration status
- Registration status as last checked September 25, 2026: open
- Entry fee
- Listed fee for the longest distance, $70 (from ultrasignup.com, checked September 25, 2026)
- Start time
- 8:00 AM EDT
- Course profile
- Loop course; Trail surface; 5500 ft gain, 5500 ft loss (official course data); Not USATF certified; Not a Boston qualifier
About the Mystery Mountain Marathon & 12-Miler
Mystery Mountain Marathon & 12-Miler in Chatsworth, GA.
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Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
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- Blog All guides Planning advice for finding, choosing and travelling to races.
Mystery Mountain Marathon & 12-Miler: common questions
- When is the Mystery Mountain Marathon & 12-Miler?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Mystery Mountain Marathon & 12-Miler held?
- In Chatsworth, Georgia.
- What distances does the Mystery Mountain Marathon & 12-Miler offer?
- Marathon and 12 Miler.
- How many people run the Mystery Mountain Marathon & 12-Miler?
- About 250 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Mystery Mountain Marathon & 12-Miler?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Mystery Mountain Marathon & 12-Miler?
- Registration status as last checked September 25, 2026: open. Listed fee for the longest distance, $70 (from ultrasignup.com, checked September 25, 2026).
- What time does the Mystery Mountain Marathon & 12-Miler start?
- 8:00 AM EDT.
- What is the course like at the Mystery Mountain Marathon & 12-Miler?
- Loop course; Trail surface; 5500 ft gain, 5500 ft loss (official course data); Not USATF certified; Not a Boston qualifier.
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