2026 Southwest Series - Day 2 (CO)
The Mainly Marathons Southwest Series offers a unique, no-limits running experience with a dedicated community.
Race Date
Nov 9, 2026
Location
Durango, CO
Quick facts
- Date
- Monday, November 9, 2026
- Location
- Durango, Colorado
- Distance
- Half marathon (13.1 mi)
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Not listed
- Finishers on record
- 290
Highlights
Good For
Atmosphere
The Experience
The Mainly Marathons Southwest Series is built on a foundation of inclusivity and a shared passion for running, welcoming participants of all paces. This series, with 8 editions on record and a steady field trend, has cultivated a loyal following, with approximately 26% of runners returning for subsequent events.
Runners from around 28 states have converged to be part of this "loony running family," drawn by the promise of no time limits and a supportive atmosphere. The series emphasizes community and shared adventure, encouraging participants to "RUN this country, TOGETHER!"
While specific course details for each event vary, the series is known for its dedication to providing award-winning medals and great post-race food, ensuring a memorable experience for every finisher. It’s a celebration of the running journey, no matter the speed.
Race-provided description
World's Best Running Series! No Time Limits Great Food Award-Winning Medals Loony Running Family! We RUN this country, TOGETHER!Event details and scheduleThanks for running with Mainly Marathons! Take a look at our website for additional details about this series and our other series of races. Also, join our Facebook group to stay up-to-date with our loony adventures: Main Group and Southwest Series. If you're interested in some Mainly Merch, check out our online store HERE. We'll offer some items (hats, stickers, magnets, mugs, etc.) in-person at the races, the Mainly Merch store best option for a variety of fun designs and quality merchandise to showcase your loonacy! If you have any questions, email [email protected] We RUN this country, TOGETHER!
Course Info
Course Type
Loop Course
Terrain
road
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Quality Score
Standout638 years running
~48 finishers a year
small race — neutral
26% returning runners
limited extras
runners from 28 states
winner 1:48:30
typical high 53°F
Race Day Weather
5-year historical avgStart (Low)
27°
Afternoon (High)
53°
Ideal racing weather — cool and comfortable
0.0"
Precipitation
8 mph
Wind
58%
Humidity
Historical Finish Times
How 290 finishers actually crossed the line across 8 years.
Most recent
2025
Total finishers
290
Median time
3:39:20
Latest turnout
42
States
44
Turnout by year
2017–2025
Hover the histogram to inspect specific finish times.
Race Photos
About the Organizer
Frequently asked
When is the 2026 Southwest Series - Day 2 (CO)?
The 2026 Southwest Series - Day 2 (CO) is held on Monday, November 9, 2026, starting at 11:00 AM.
Where does the 2026 Southwest Series - Day 2 (CO) take place?
It takes place in Durango, Colorado.
What distances does the 2026 Southwest Series - Day 2 (CO) offer?
The half marathon (13.1 miles).
Is the 2026 Southwest Series - Day 2 (CO) course flat and good for a PR?
The 2026 Southwest Series - Day 2 (CO) is a ultra-flat, loop course course.
How many people run the 2026 Southwest Series - Day 2 (CO)?
HalfRuns has finish records for 290 runners who have completed the 2026 Southwest Series - Day 2 (CO).
HalfRuns editorial — independent, no paid placement.
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