Badminton tourney

April 20-21: The 9th Annual Baltimore Badminton Charity Open raises money for the American Red Cross. There are events for middle and high school players as well as adults and seniors. Play will be at the Northeast Regional Recreation Center (the former Perring Racquet Club) in Parkville and is open to the public. The men's event is closed but there are spots for women's, youth and senior events. Information: CharityOpen.org.

Race for Excellence

April 27: Armed Forces Communications & Electronics Association Central Maryland 6th Annual Race For Excellence, 5K and 1-Mile Fun Run. Benefits AFCEA's Central Maryland Scholarship Fund, which provides merit-based college scholarships to local high school students. Both races start at Science Applications International Corp.'s Cyber Innovation Center at 6841 Benjamin Franklin Drive, Columbia, MD. Details: afceacmd.org.

Thompson Run/Walk

April 28: The 2nd Annual Adam Thompson 5K Run/5K Walk, 8 a.m., Harford Community College, 401 Thomas Run Road in Bel Air. The race honors the memory of a first-year Harford CC student who was killed in an automobile accident in 2011. Register at harford.edu/adam or on-site at Susquehanna Center Auxiliary Gymnasium beginning at 7 a.m. Cost: $20. Information: 443-412-2428.

Mud run

May 5: Terrapin Adventures has partnered with Playworks Baltimore to host a 5K run through the woods of Savage to benefit the nonprofit Playworks Baltimore and its effort to bring safe, meaningful play to Baltimore schools. Registration is $30 before March 15 and $40 after that date. To participate, runners must also raise a minimum of $25 for Playworks Baltimore. For information and to pre-register, go to TerrapinMudRun.com.

Md. Half Marathon

May 11: Registration is open for the fifth annual Maryland Half Marathon to benefit the University of Maryland Marlene and Stewart Greenebaum Cancer Center. The race will be in the Maple Lawn community of Howard County. The cost of registration will be $75 until Jan. 31, $85 in February and $90 from March 1 to May 11. The cost of the Dozer's Kids Fun Run is $15. Register at mdhalfmarathon.com.

Email us

Please send your calendar items to sports@baltsun.com with "Recreation and Outdoors" in the subject field.