24 aidUltramarathons Near Baltimore, MD
As of October 6, 2026, Crewable lists 21 upcoming ultramarathons near Baltimore, MD from October 2026 to September 2027. The next is Rick O'Donnell Memorial 5 Mile Trail Run and Ultra Challenge on October 11 in Mount Airy, MD. Registration is open for 5.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
With aid station data
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3 aidRace calendar
October 2026
4 racesRick O'Donnell Memorial 5 Mile Trail Run and Ultra Challenge
Mount Airy, MD8 hr4 hr+1Open until Oct 11from $50
November 2026
3 racesDecember 2026
1 raceJanuary 2027
1 raceFebruary 2027
1 raceMarch 2027
5 racesApril 2027
3 racesJune 2027
2 racesSeptember 2027
1 raceQuick answers
What is the next ultramarathon near Baltimore, MD?
Rick O'Donnell Memorial 5 Mile Trail Run and Ultra Challenge, on Sunday, October 11, 2026, in Mount Airy, MD. Distances: 8 hr, 4 hr, 5 mi.
What is the closest ultramarathon to Baltimore?
Patapsco Valley 50K in Baltimore, MD, about 8 miles from Baltimore, on October 24, 2026.
How many ultramarathons near Baltimore, MD have open registration?
5 of the 21 list registration as open as of October 6, 2026, including Rick O'Donnell Memorial 5 Mile Trail Run and Ultra Challenge, Delaware Trail Fest and Patapsco Valley 50K.
What is the busiest month for ultramarathons near Baltimore, MD?
March 2027, with 5 of the 21. October 2026 follows with 4.
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