Rosaryville Half Marathon, 10K, 5K Trail Run
5K · 3.6 mi · 10K · 6.7 mi · Half Marathon · 14 mi · 9 mi · 2 mi · 5 mi
3/28/2026, 12:00:00 AM · Upper Marlboro, Maryland, US
Est. 2025 · Listed Dec 12, 2019
Run Vibes summary
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Original listingFull description from sourceTap to expand · same text as on RunSignup / the official listing▾
Conveniently located right off the Capital Beltway, Rosaryville State Park in Upper Marlboro, MD offers fun and challenging terrain, that is also beginner friendly. Not overly technical in nature, this race course is perfect for an early season trail running race.
The race course at Rosaryville is beautiful and fun and winds through mixed hardwood forests and fields. The trails are twisty, relatively smooth, relatively flat and fast. The half marathon course includes the 9 mile perimeter trail, the 2 mile interior trail, and wide open horse trails. The 10K+ course includes 5 miles of the perimeter trail and just over one mile of wide open horse trails. The 5K course consists of part of the perimeter trail and some equestrian trails.
Our charity partner for this event is City Kids. If you are able, please consider making a donation to this amazing organization during registration.
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Full listing on the race page · official details from the source
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Full listing on the race page · official details from the source
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Full listing on the race page · official details from the source
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Est. 2022 · Listed Dec 21, 2021
AI summarization pending
We haven’t generated Run Vibes’ quick-read summary for this race yet—it’s in the queue and will show here when ready.
Full listing on the race page · official details from the source
AI summarization pending
We haven’t generated Run Vibes’ quick-read summary for this race yet—it’s in the queue and will show here when ready.
Full listing on the race page · official details from the source
AI summarization pending
We haven’t generated Run Vibes’ quick-read summary for this race yet—it’s in the queue and will show here when ready.
Full listing on the race page · official details from the source
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Est. 2026 · Listed Dec 16, 2025
AI summarization pending
We haven’t generated Run Vibes’ quick-read summary for this race yet—it’s in the queue and will show here when ready.
Full listing on the race page · official details from the source