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January 22

RosaryvillePre-registration is required and will open on Monday, January 16th at 6 PM and will close at Noon Saturday 21 January.
There will be no day-of registration.

Come out and enjoy a great selection of classic courses designed and set by Pam and Mike Dvorsky in one of our favorite parks. Rosaryville is a 982-acre day-use park with miles of trails for hiking, biking and equestrians. We will be registering and starting from the Pavilion Picnic area, Pavilion # One.

Note that Rosaryville State Park has installed an automated toll machine – an inverse ATM – for admission. The toll machine (photo below) only accepts credit cards and exact change $1 and $5 bills. Weekend and holiday entry fees are per vehicle: $3 in-state and $5 for out-of-state.

Check in will open about 9:45am and courses will open at 10:00am. As always, please be off the course no later than 3pm and remember to download at our e-punch station even if you did not finish. We want to make sure of everyone’s safety and status.

Junior training will be offered at this event! If you have children, bring them to meet coaches Adam Smith, John Cumings, and Alex Merka at 10am. They have planned a fun hour of orienteering instruction for juniors of all abilities and experience. If you have any questions, email them (click on a name).

Volunteer SignUps: If you'd like to help out at this event click here. You can also contact the event director (listed below).

UPDATE JAN 21: Due to the weather forecast, ARDF can not be offered.ARDF Radio Orienteering Course:
At Rosaryville, we will offer a ten-control "Fox-O" radio-direction-finding (ARDF) orienteering course designed by Mike Kholodov, as an orienteer’s introduction to ARDF. It's orienteering with a twist:

  • The map is a normal orienteering map, but the on-map controls lead you to the vicinity of the low-power radio beacon.
  • Once you navigate to the control location, using normal orienteering techniques, you will be able to hear the beacon’s signal with your ARDF equipment.
  • Your task is to find the beacon located within 30-50 meters in any direction from the control.
  • The radio beacon transmits continuously, but there is no flag, only an e-punch control box. It’s meant to be hard to see so that you have to use the strength of the radio signal to find the control box.
For more ARDF event details, click here.

Junior Training Free Beginner Instruction will be offered, but please reach out to the Event Director you have a group, so we can plan accordingly. Also, make sure to check out our Your First Event and For Beginners webpages. Beginners are also encouraged to watch relevant videos such as this one created by QOC's instructional guru David Onkst. If they don’t answer any remaining questions you have, just use our Contact Form and ask away!

Group Leaders: Please see our For Group Leaders page if you are leading a youth or large group – even though you will be pre-registering online. Please contact the Event Director to inform her of your plans and numbers.

Pet Policy: leashed pets are allowed in Rosaryville.


  • QOC will continue to use pre-registration as the ONLY method of signing up for our meets. There will be NO day-of, on-site registration. Refunds are paid only in the case of event cancellation.
  • Masks are optional at all locations connected with the event. Please continue to minimize clustering at and around the check-in, e-punch, start and finish areas.
  • As mentioned above, beginner instruction has resumed to provide an overview of orienteering basics for newcomers to the sport or those who just want a refresher.
  • There is no water on the course. Participants are responsible for their own hydration. A very limited supply of bottled water for emergency use will be on hand with the Meet Director; but it is vital to stay well hydrated. Please come prepared!
  • There are no snacks offered by QOC.
  • For this event (as with most others this season) there will be eight 15-minute check-in windows followed by two 45min windows.
Rosaryville Fee Machine


Rosaryville State Park, Pavilion parking area, Rosaryville, MD (Classic)

RegistrationRegistration for this event opens at 6pm on Monday Jan. 16 via this link. Registration will close at noon on Saturday January 21. Pre-registration is mandatory.

Who's registered? Check by clicking here. Sorting by column is possible too - just click on the column name.

Start TimesStart times will be by windows (to be defined for this event before registration opens).
ScheduleSunday, January 22
10:00 am - 3:00 pmClassic:
Event Director:Cecilia Landers
Event Director:Jody Landers
Course Designer:Pam Dvorsky
Course Designer:Mike Dvorsky
Location Details

Rosaryville State Park
Pavilion parking area
Rosaryville, MD
Google Map

From I-495 exit 11A, head east on Rt 4 (Penn. Ave) for 3 miles. Turn right on Woodyard Rd/MD-223, then quickly move left to turn left on Marlboro Pike. After 2.8 miles, turn right on Crain Hwy/Rt-301 S, then take the first right on W. Marlton Ave into the Park. Follow O'signs within the park.

Park Entrance Fees: $3/per vehicle in-state, $5/pp out-of-state
Google Maps Link
Apple/iPhone Link

Course DetailsClassic
Course NameLength (km)Climb (m)No. Controls
White 2.5558
Yellow 3.7859
Orange 4.81109
Beige 3.8758
Brown 5.21209
Green 6.514514
Red 8.420015
Blue 10.222017
Course NotesClassic

Map scales will be 1:7500 for white, yellow and beige course maps, and 1:10000 for all other courses.
Contour Intervals are 5 meters (16.7 feet)

Rosaryville is a beautiful State Park with several distinct micro-climates and flora zones; ranging from an area we nick-named “Jurassic Park,” to complex trail networks, to fern filled valleys, to impassable overgrown thickets, to open forests. Rosaryville offers as wide a range of terrain as we have seen in a single park. In general, you will see a significant range of runnability at Rosaryville. There are pockets that are dense with vines, briars and saplings that will make passage extremely difficult, if you are not on a trail, yet 10 yards away it could be open and runnable woods. This entire park is a complex trail-rich environment with horse, mountain bike and hiking trails.

Years ago, this was royal hunting grounds which became a farmland community. Evidence of old buildings, barns, roads, and old trash dumps can be found throughout the park. Old roads are generally marked as Rides. Trash dumps (old cars, refrigerators, farm implements, etc.) are marked with a black X. There are many large rootstocks in the woods, but none are marked on the map and none are used for controls. Do not rely on rootstocks for navigation. In the central area of the park is Mount Airy Mansion, which dates back to the mid-1700s and once belonged to Lord Baltimore and later the Custis family (Martha Washington’s family) and is part of the park. It is rented out for special occasions and the grounds are open to the public. It is OK to use the trails, parking area and roads in this area. Generally, the area of woods just outside the Mount Airy grounds is thick with vegetation so trails are the best option through that area.

The terrain is classic ridge and valley, with broad, flat ridges and deeply incised watercourses. Along the streams are many side reentrants. Climb in this park is mild to moderate, except around streams where embankments tend to be very steep. Marshy areas and reentrants may be bone dry or boot sucking mud depending on the amount of rain we get during the week prior to the meet.

You will probably encounter horse riders and mountain bikers during your run. Some horses startle easily if they don’t know you are there. Please step to the side of the trail and let the horses pass you. Try not to run by a horse or come up from behind them. Mountain bikers will usually slow down as they approach you and call out which side they want to pass you on. Again, just step off the trail momentarily while they pass you. Being courteous is the key!

All trails are accurately shown on the map and are generally in good condition, though all trails are covered with fallen leaves and can be more difficult to see this time of year, especially the indistinct trails. The mountain bike trails are very distinct and smooth, where the horse trails often are beaten up and muddy. If there is recent heavy rain, many flat areas and trails will be wet, muddy and marshy. Please make sure to tighten your orienteering shoes or you might lose them in the mud. If you are on an indistinct trail, you can follow it fairly well if you pay attention, but if you run across it, you may not notice it.

It seems that there has been a recent rejuvenation of the horse jumps throughout the park. Only the permanent, unmovable, jumps have been mapped as man-made objects (black X). Any jump that is temporary or movable has not been mapped. Every week they seem to be in different locations.

Lastly there are hundreds of streamer flags of every color in the rainbow hanging throughout the park marking who knows what. They have nothing to do with our orienteering and should be ignored.

Enjoy, and may the forest be with you.

Entry FeesIndividual Entries

Note: juniors = under 21

Club Member, adult Club Member, junior Non-Member, adult Non-Member, junior
$10 $5 $20 $5

Group Entries

Participants are welcome to orienteer together as a group (up to the maximum for that event; usually 4). Each member of a group is charged their individual rate as shown above, up to a group total of $30 (maximum), and each receives a map. A group receives one epunch. Individuals or groups desiring to compete on a second course after completing their first can do so for a reduced fee of $2/map subject to approval at the event by the Event Director.

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 will be loaned one 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 (such as car keys) when borrowing a compass or epunch.
  • In addition to free on-site beginner instruction if needed, beginners are encouraged to watch relevant videos such as this one created by QOC's instructional guru David Onkst