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April 17

Head to the McKeldin section of Maryland's Patapsco Valley State Park, just a bit northwest of Ellicott City, to enjoy the (predicted) sunny weather while orienteering on this fine terrain. Our McKeldin map remains pretty well up to date, though there is one slight re-routing of a trail (about 15 meters) in a southwest part of the park. This map even has most rootstocks mapped!

Any youth or large groups attending, please contact the Event Director so that we can coordinate pre-registration for your group; the group registration and waiver form is part of the information on our Group Leaders page.

E-punching will be in use, and course details are below. If you are considering trying a harder level course than usual, you might want to consider it carefully since these courses have a greater amount of climb due to the nature of this terrain. We do anticipate having plenty of water on hand. Also, the QOC library will be on hand, thanks to course setters Mark & Patti Mace, so see them at the event if you'd like to check it out.

Course details:

  • White 2.6 km 85m climb
  • Yellow 3.4 km 114m climb
  • Orange 4.0 km 126m climb
  • Brown 3.2 km 144m climb
  • Green 5.3 km 306m climb
  • Red 6.6 km 340m climb
  • Blue 8.3 km 430m climb


Patapsco Valley State Park, McKeldin Area, Shelter 576, Marriottsville, MD (Classic Courses)

RegistrationNo advance registration needed - just show up and have fun!
Start TimesYou may usually start your course any time during the start window for the event. For most events, this will be between 11:00am - 1:30pm.
ScheduleSunday, April 17
12:00 pm - 2:00 pmClassic Courses: Start Window
Event Director:John Landers
Event Director:Jody Landers
Course Setter:Patti Mace
Course Setter:Mark Mace
Location Details

Classic Courses
Patapsco Valley State Park
McKeldin Area, Shelter 576
Marriottsville, MD
Google Map

From I-695/I-70 West take I-70 to Marriottsville Rd. (Exit 83). Go North on Marriottsville Rd. for 4 miles to the park entrance on the right. After paying park entrance fees, follow O-signs to shelter #576.

From I-70 East take Rt. 40 (Exit 82, Balt. Natl. Pike) to Marriottsville Rd. Turn left. Park entrance is 5 miles on the right. After paying park entrance fees, follow O-signs to shelter #576.

Course DetailsClassic Courses
Course NameLength (km)Climb (m)No. Controls
White 2.6858
Yellow 3.41159
Orange 412512
Brown 3.21458
Green 5.330512
Red 6.634014
Blue 8.343020
Entry FeesIndividual Entries

Note: juniors = under 21

Club Member, adult Club Member, junior Non-Member, adult Non-Member, junior
Epunch Owner $5 $5 $10 $5
Epunch Borrower $10 $5 $15 $10

Team or Group Entries

Participants are welcome to compete together as a single team entry. Teams containing one or more nonmembers are charged the nonmember individual rate. Teams containing one or more adults are charged the adult individual rate. For teams to receive member or junior rates, all members of the team must be members or juniors, respectively. Each extra team map beyond the first is an additional $2. Individuals or teams desiring to compete on a second course can do so for a reduced fee of $2/map.

Important Notes
  • If you wish to become a QOC member you should join online in advance via this webpage (which also explains the member benefits). Membership is completely optional.
  • Most of our events use an 'epunch' timing chip for electronic timing. Individuals or groups without their own epunch pay a higher entry fee (see above), which includes the loan of an epunch for that event. Loaned epunches that are lost incur a $40 replacement fee. Epunches (also known as SI-cards or finger sticks) can be purchased from online vendors as described here.
  • Former QOC members who have let their membership lapse pay non-member fees.
  • Compasses are available at no charge, but if lost incur a $15 replacement fee.
  • Please provide collateral (driver's license or car keys) when borrowing a compass or epunch.
  • For additional safety, whistles are available for sale at $1/each.
  • Free beginner instruction is always available - just ask at the registration table.