July 18, 2026
Robert Gray Middle School, Portland, OR
[45.4817, -122.7013]
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Scatter-O format with short and long foot-O courses plus a long bike-O course.
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New 4.75 sq km urban map using 1:10,000 scale and 5-meter contours.
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Registration is now open. Save $5 if you register by Sunday, July 11 at 11:59 pm. Registration closes Friday, July 16 at 11:59 pm.
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Map distribution at is at the start for experienced orienteers. Beginners can look at their maps before they start.
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Mass start for both courses is at 9:00 AM, but you can start anytime between 9 and 11 AM. Even later starts are okay - you just need to finish within 3 hours or 2 PM, whichever occurs first.[
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Timing is done with the MapRun® phone app.
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Never done this before or need a refresher? Come any time between 8:30 - 10:30 AM. We'll show you how and get you started.
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Post-event social to share course experiences.
Event Description
Mt Hood Orienteering’s first scatter-O competition explores the 4.75 square-kilometer area of SW Portland west of the Stonehenge radio/TV tower. For this scatter-O event, find all but one or two virtual control sites on your map in any order (you decide which ones to skip). You have a choice of a short or a long course and you must finish your course within 3 hours or 2 PM, whichever occurs first (this should easily be more time than required to complete your course). Each solo competitor or team will use a phone with the MapRun app installed on it for timing and to record the controls found.
There will also be a long bike-O course for those interested in pedaling their way on the long course. Human powered unicycles, bicycles, tricycles, and quad-cycles are all allowed for helmeted cyclists. Electric assist is allowed for mobility scooters.
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Because this event is happening in July when heatwaves are possible, we are starting competitors between 9 and 11 AM, when it will be cooler. You will not be able to look at your map before you start unless you are a beginner on the short course. Beginners can take a short introductory lesson before doing their course.
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Your placement in the results depends on your time and finding the minimum number of controls required for your course.
As always, there will also be a free kidd-O course for our youngest orienteers at the event center. This course is designed so that these orienteers can venture on their own within sight of their guardians or with their guardians.
This is an almost all-weather event that can be postponed if serious heat wave conditions exist in the morning hours. In the event of a postponement, we will announce any scheduling changes to everyone who has registered for this event.
Register for the Event
Please note: the earlier people register, the easier it is for us to plan for the event. To encourage earlier registration, we add an extra $5 fee to any registrations that occur less than seven days before the event.
Save $5 and register for this event before Sunday, Jul 11 at 11:59 PM, but you can register up until 11:59 pm on Friday, Jul 16. The prices on the fee schedule represent early/late registration.
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We use the Orienteering USA (OUSA) Event Register system to manage our events.​
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An OUSA account is not required. If you don't have an OUSA membership, select the Enter Data Manually option.
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Your registration is not complete until you sign your waiver and pay your fees (adults must sign for minors).
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Parents/Guardians, please register your minor children separately and sign the waver for them.​
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All participants must be registered individually, even if they are part of a team.​​
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If you are part of a team, enter the team name/ID on the registration form so that we can group you with your team for the starts and results.
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After registration has closed, we will send an email out with the final instructions for the event.​
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Stonehenge Event Fees
The following discounts can be applied to fees shown below:
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Members of Mt Hood Orienteering: -$6
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Members of all other orienteering clubs: -$3
The two fees shown are for early/late registration.
Course | Adult (21+ yrs) | Junior (8-20 yrs) | Child (< 10 yrs) /Adult Shadow |
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Short | $15/$20 | $12/$17 | free |
Long | $20/$25 | $17/$22 | free |
Long - Bike | $20/$25 | $17/$22 | free |
Note: A child is assumed to be accompanying an adult on a course without navigating. A child competing on any course with a map, must register as a junior.
MTHD Reimburesment Policy:
Upon request, we will reimburse event fees (less admin. costs) up to the close of the registration period.
Stonehenge Event Fees
The following discounts can be applied to fees shown below:
-
Members of Mt Hood Orienteering: -$6
-
Members of all other orienteering clubs: -$3
The two fees shown are for early/late registration, respectively.
Course | Adult (21+ yrs) | Junior (8-20 yrs) | Child (< 10 yrs) /Adult Shadow |
|---|---|---|---|
Short | $15/$20 | $12/$17 | free |
Long | $20/$25 | $17/$22 | free |
Long - Bike | $20/$25 | $17/$22 | free |
Note: A child is assumed to be accompanying an adult on a course without navigating. A child competing on a course with a map, must register as a junior.
MTHD Reimburesment Policy:
Upon request, we will reimburse event fees (less admin. costs) up to the close of the registration period.
Directions to Robert Gray Middle School
To get to this event:​​
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Address: 5505 SW 23rd Ave, Portland, OR
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GPS coordinates: 45.4817, -122.7013
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Follow the directions provided by Google Maps
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Transit options:
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For the best transit option, take bus line 54 to NW 25th Ave and walk one long block north to the middle school (see www.trimet.org for more information).
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