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Seneca Creek Greenway Trail Marathon

Damascus, MD, USA

Partly cloudy throughout the day.

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Details
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Pre-Race
Race
Post-Race
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Race Overview

In this race, you will experience some of Montgomery County's finest single-track trails as you meander along beautiful Seneca Creek in Seneca State Park. This scenic trail is muddy, rocky, rooty, hilly and steep in sections with no major elevation gain/loss. This is a challenging, but beautiful run for all!

The Seneca Creek Greenway Trail Marathon and 50K is a low-key, low-priced and fun filled event along the beautiful Seneca Creek Greenway Trail and parallel trails. Marathon and 50K participants will have the option to choose their final distance when returning to the finish (either stop for the "marathon" or keep going for the 50K.
Wikipedia

FAQ

When is the 2026 Seneca Creek Greenway Trail Marathon?

The 2026 Seneca Creek Greenway Trail Marathon will be held on Saturday March 7, 2026.

Is the Seneca Creek Greenway Trail Marathon a Boston Marathon Qualfier?

No, the Seneca Creek Greenway Trail Marathon is NOT a Boston Marathon qualifier.

Seneca Creek Greenway Trail Marathon Weather History

Seneca Creek Greenway Trail Marathon Weather Averages

Average Temp: 42°, Average Low: 34°, Average High: 51°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
38°
40°
42°
45°
47°
48°
49°
Feel33°35°37°40°43°44°46°
Rain-------
Wind8mph
9mph
10mph
10mph
10mph
11mph
11mph
Dew28°28°28°28°28°28°28°
RunScoreRun Score: 7Run Score: 7Run Score: 7Run Score: 7Run Score: 7Run Score: 7Run Score: 7

Seneca Creek Greenway Trail Marathon 2025

Mar 8, 2025
Partly cloudy throughout the day.
Low: 34°, High: 48°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 42°
cloudy 44°
cloudy 44°
partly-cloudy-day 44°
partly-cloudy-day 46°
partly-cloudy-day 47°
partly-cloudy-day 48°
Feel35°38°38°40°42°41°42°
Rain-------
Wind14mph
13mph
12mph
7mph
9mph
14mph
14mph
Dew32°30°28°25°23°22°19°
RunScoreRun Score: 6Run Score: 7Run Score: 7Run Score: 8Run Score: 8Run Score: 7Run Score: 7

Seneca Creek Greenway Trail Marathon 2024

Mar 9, 2024
Cloudy skies throughout the day with a chance of rain throughout the day.
Low: 40°, High: 48°, Heavy Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
rain 40°
rain 40°
rain 41°
rain 42°
rain 43°
rain 44°
rain 46°
Feel35°35°36°38°38°42°46°
Rainlightlightlightlightlightlightlight
Wind7mph
8mph
8mph
7mph
9mph
5mph
1mph
Dew39°40°41°42°43°44°45°
RunScoreRun Score: 8Run Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 6Run Score: 6

Seneca Creek Greenway Trail Marathon 2023

Mar 11, 2023
Cloudy skies throughout the day.
Low: 35°, High: 45°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 36°
cloudy 37°
cloudy 38°
cloudy 41°
cloudy 45°
partly-cloudy-day 44°
cloudy 45°
Feel27°28°29°35°39°38°40°
Rain-------
Wind14mph
17mph
16mph
11mph
11mph
12mph
9mph
Dew25°26°26°27°28°27°28°
RunScoreRun Score: 5Run Score: 5Run Score: 5Run Score: 7Run Score: 8Run Score: 7Run Score: 8

Seneca Creek Greenway Trail Marathon 2021

Mar 13, 2021
Clear conditions throughout the day.
Low: 40°, High: 56°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 42°
clear-day 43°
clear-day 45°
clear-day 48°
clear-day 49°
clear-day 51°
clear-day 53°
Feel38°38°40°46°47°51°53°
Rain-------
Wind6mph
9mph
10mph
4mph
5mph
3mph
11mph
Dew11°8°8°9°9°10°13°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 8

Seneca Creek Greenway Trail Marathon 2020

Mar 7, 2020
Clearing in the afternoon.
Low: 35°, High: 49°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 37°
cloudy 39°
partly-cloudy-day 43°
partly-cloudy-day 44°
clear-day 46°
clear-day 47°
clear-day 47°
Feel30°31°36°36°40°42°40°
Rain-------
Wind12mph
14mph
11mph
17mph
14mph
11mph
19mph
Dew23°23°22°22°20°17°17°
RunScoreRun Score: 6Run Score: 6Run Score: 7Run Score: 6Run Score: 7Run Score: 8Run Score: 6

Seneca Creek Greenway Trail Marathon 2019

Mar 2, 2019
Cloudy skies throughout the day with a chance of rain or snow throughout the day.
Low: 32°, High: 43°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 32°
cloudy 33°
snow 34°
snow 37°
snow 38°
snow 39°
snow 40°
Feel32°31°32°33°32°33°36°
Rain---lightlightlightlight
Wind3mph
3mph
3mph
5mph
7mph
10mph
5mph
Dew31°32°33°35°35°35°34°
RunScoreRun Score: 7Run Score: 7Run Score: 7Run Score: 7Run Score: 7Run Score: 7Run Score: 8

Seneca Creek Greenway Trail Marathon 2018

Mar 3, 2018
Clear conditions throughout the day.
Low: 33°, High: 48°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 34°
clear-day 37°
clear-day 41°
clear-day 44°
clear-day 46°
clear-day 47°
clear-day 48°
Feel26°29°32°35°41°42°43°
Rain-------
Wind10mph
12mph
16mph
21mph
10mph
10mph
15mph
Dew22°24°24°26°27°27°27°
RunScoreRun Score: 6Run Score: 6Run Score: 6Run Score: 5Run Score: 8Run Score: 8Run Score: 7

Seneca Creek Greenway Trail Marathon 2017

Mar 4, 2017
Clear conditions throughout the day.
Low: 20°, High: 38°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 27°
clear-day 29°
partly-cloudy-day 32°
clear-day 34°
partly-cloudy-day 36°
clear-day 36°
clear-day 38°
Feel21°20°23°26°29°28°29°
Rain-------
Wind5mph
10mph
11mph
10mph
9mph
12mph
17mph
Dew12°13°12°11°11°10°9°
RunScoreRun Score: 6Run Score: 5Run Score: 6Run Score: 6Run Score: 7Run Score: 6Run Score: 5

Seneca Creek Greenway Trail Marathon 2016

Mar 5, 2016
Partly cloudy throughout the day.
Low: 32°, High: 41°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 32°
cloudy 34°
cloudy 34°
clear-day 36°
partly-cloudy-day 39°
partly-cloudy-day 41°
cloudy 41°
Feel29°29°29°36°36°40°37°
Rain-------
Wind4mph
5mph
6mph
0mph
4mph
3mph
7mph
Dew21°21°21°21°21°23°23°
RunScoreRun Score: 7Run Score: 7Run Score: 7Run Score: 7Run Score: 8Run Score: 8Run Score: 8

Seneca Creek Greenway Trail Marathon 2015

Mar 21, 2015
Partly cloudy throughout the day with rain or snow clearing later.
Low: 31°, High: 59°, Light Rain
Time9AM10AM11AM12PM1PM2PM3PM
Temp
rain 32°
rain 34°
cloudy 36°
cloudy 40°
cloudy 47°
partly-cloudy-day 52°
partly-cloudy-day 54°
Feel32°34°33°36°44°52°54°
Rainlightlight-----
Wind0mph
0mph
4mph
5mph
6mph
8mph
9mph
Dew29°31°31°35°38°40°40°
RunScoreRun Score: 6Run Score: 6Run Score: 7Run Score: 8Run Score: 8Run Score: 9Run Score: 9

Seneca Creek Greenway Trail Marathon 2014

Mar 8, 2014
Clear conditions throughout the day.
Low: 25°, High: 59°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 34°
clear-day 40°
clear-day 45°
clear-day 52°
clear-day 56°
clear-day 57°
clear-day 57°
Feel30°40°42°52°56°57°57°
Rain-------
Wind5mph
0mph
7mph
7mph
6mph
15mph
10mph
Dew29°29°33°36°37°37°36°
RunScoreRun Score: 7Run Score: 7Run Score: 8Run Score: 9Run Score: 9Run Score: 7Run Score: 8

Seneca Creek Greenway Trail Marathon 2013

Mar 2, 2013
Partly cloudy throughout the day.
Low: 29°, High: 35°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 30°
cloudy 30°
cloudy 33°
cloudy 32°
cloudy 34°
cloudy 34°
cloudy 34°
Feel22°22°24°24°26°26°26°
Rain-------
Wind10mph
10mph
11mph
10mph
10mph
11mph
11mph
Dew20°21°21°20°21°21°20°
RunScoreRun Score: 5Run Score: 5Run Score: 5Run Score: 6Run Score: 6Run Score: 6Run Score: 6

Seneca Creek Greenway Trail Marathon 2012

Mar 3, 2012
Clearing in the afternoon with rain clearing later.
Low: 45°, High: 57°, Heavy Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
rain 46°
rain 47°
clear-day 48°
clear-day 50°
clear-day 50°
clear-day 52°
clear-day 56°
Feel43°42°44°45°50°52°56°
Rainlightlight-----
Wind7mph
9mph
9mph
14mph
12mph
11mph
14mph
Dew45°46°42°36°29°30°30°
RunScoreRun Score: 6Run Score: 8Run Score: 8Run Score: 7Run Score: 8Run Score: 8Run Score: 8

Seneca Creek Greenway Trail Marathon 2011

Mar 5, 2011
Partly cloudy throughout the day with late afternoon rain.
Low: 39°, High: 63°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 45°
cloudy 46°
cloudy 48°
partly-cloudy-day 53°
clear-day 57°
clear-day 58°
clear-day 62°
Feel41°44°44°53°57°58°62°
Rain-------
Wind6mph
5mph
9mph
9mph
14mph
13mph
12mph
Dew43°44°45°45°45°45°45°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 8Run Score: 8

Seneca Creek Greenway Trail Marathon 2010

Mar 6, 2010
Clear conditions throughout the day.
Low: 29°, High: 49°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 32°
clear-day 36°
clear-day 39°
clear-day 42°
clear-day 45°
clear-day 46°
clear-day 48°
Feel25°30°33°38°40°43°46°
Rain-------
Wind8mph
7mph
8mph
7mph
8mph
6mph
6mph
Dew17°15°13°13°13°12°13°
RunScoreRun Score: 7Run Score: 7Run Score: 7Run Score: 8Run Score: 8Run Score: 9Run Score: 9

Seneca Creek Greenway Trail Marathon 2009

Mar 7, 2009
Partly cloudy throughout the day.
Low: 48°, High: 72°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 56°
partly-cloudy-day 62°
partly-cloudy-day 67°
partly-cloudy-day 70°
partly-cloudy-day 70°
partly-cloudy-day 72°
partly-cloudy-day 72°
Feel56°62°67°70°70°72°72°
Rain-------
Wind3mph
1mph
5mph
7mph
7mph
8mph
9mph
Dew47°48°51°50°50°49°48°
RunScoreRun Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Seneca Creek Greenway Trail Marathon 2008

Mar 1, 2008
Partly cloudy throughout the day with rain clearing later.
Low: 34°, High: 46°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 40°
partly-cloudy-day 40°
cloudy 40°
cloudy 42°
partly-cloudy-day 45°
partly-cloudy-day 43°
cloudy 45°
Feel31°30°30°32°36°34°37°
Rain-------
Wind15mph
25mph
24mph
24mph
21mph
22mph
17mph
Dew24°21°19°18°21°20°22°
RunScoreRun Score: 6Run Score: 5Run Score: 5Run Score: 5Run Score: 6Run Score: 5Run Score: 6

Seneca Creek Greenway Trail Marathon 2007

Mar 3, 2007
Partly cloudy throughout the day with afternoon rain.
Low: 32°, High: 54°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 35°
partly-cloudy-day 42°
partly-cloudy-day 49°
partly-cloudy-day 52°
partly-cloudy-day 54°
rain 50°
rain 50°
Feel35°42°49°52°54°45°45°
Rain-----lightlight
Wind3mph
3mph
3mph
7mph
15mph
15mph
13mph
Dew26°27°30°29°27°28°33°
RunScoreRun Score: 7Run Score: 8Run Score: 9Run Score: 9Run Score: 7Run Score: 7Run Score: 8

Seneca Creek Greenway Trail Marathon 2006

Mar 4, 2006
Clear conditions throughout the day.
Low: 27°, High: 46°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 29°
clear-day 33°
clear-day 36°
clear-day 39°
clear-day 42°
clear-day 43°
clear-day 45°
Feel18°22°26°30°34°35°36°
Rain-------
Wind15mph
17mph
18mph
19mph
18mph
21mph
21mph
Dew14°16°16°16°15°17°18°
RunScoreRun Score: 4Run Score: 4Run Score: 5Run Score: 5Run Score: 6Run Score: 5Run Score: 6

Seneca Creek Greenway Trail Marathon 2005

Mar 5, 2005
Partly cloudy throughout the day.
Low: 31°, High: 44°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 34°
cloudy 36°
cloudy 38°
cloudy 39°
cloudy 40°
cloudy 41°
cloudy 42°
Feel27°28°31°33°34°35°38°
Rain-------
Wind8mph
10mph
10mph
10mph
8mph
10mph
6mph
Dew21°19°19°18°18°19°18°
RunScoreRun Score: 6Run Score: 7Run Score: 7Run Score: 7Run Score: 8Run Score: 7Run Score: 8

Seneca Creek Greenway Trail Marathon 2004

Mar 6, 2004
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 50°, High: 71°, Heavy Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
rain 59°
rain 60°
rain 61°
cloudy 63°
rain 63°
rain 64°
rain 67°
Feel59°60°61°63°63°64°67°
Rainlightlightlight-lightlightlight
Wind7mph
8mph
12mph
8mph
8mph
7mph
17mph
Dew59°59°60°61°61°62°56°
RunScoreRun Score: 7Run Score: 7Run Score: 6Run Score: 9Run Score: 6Run Score: 6Run Score: 6