Meet Documents:

  • Here is the COVID Health Check form. Please fill it out by Friday 7 pm before the event. 
  • Start list is posted here. The Start list is now closed. If you did not sign up already, look at the start list and show up 30 min before an open slot. 

   Event #1/7 in the Ultimate Orienteer Series!

Let’s kick off the Ultimate Orienteer Series in the dark! Get out your headlamps and join us for this fun event at Hamlin Park in Shoreline. Even if you’ve been to a park many times, things look different in the dark.

COVID Operating Protocols

If you sign up for this event, you will be asked to read and agree to follow our COVID Operating Protocols. Our use permits are contingent on our ability to demonstrate that we can hold safe events, so we thank you in advance for helping us make this happen.

Pre-registration only; no day-of-race registration!


Course Controls Length Climb
Beginner 9 1.2 km 60 m
Intermediate 14 2.4 km 85 m
Short Advanced 14 3.2 km 110 m
Long Advanced 20 4.2 km 175 m

What is my age class?

Night-O Course/Class Assignments for Ultimate points

If you want to earn Ultimate points, check the table below to see which category you should sign up for. Find your age class in the left column, then follow the row across to the right until you find the dark orange cell. That is your “assigned” category.

For example, if you’re a female 16 or under, your Ultimate age class is F-16 and, for this event, is assigned to the Intermediate course. If you are up for a more challenging course, you can also earn points in F-18 on the Short Advanced course, or F-20 or F-21+ on the Long Advanced course. Just keep in mind that other courses are more difficult, both navigationally and physically.  Also keep in mind that you’ll be earning points only in the class you sign up for.

How are courses measured?

Courses are measured as the crow flies, in a direct line from control to control. Unless you have wings, you will travel farther than this distance! Courses are measured in kilometers, so a good rule of thumb is to simply round up to miles to estimate how far you will go. So in a 5 kilometer race, you’ll likely travel up to 5 miles.


Bring your headlamps and be ready for fast courses designed to challenge your night vision skills on the trail and in the variable open/mature forests of Hamlin Park. All courses are restricted to Hamlin Park and will not extend to Shorecrest campus or South Woods. Be aware of the out of bounds areas indicated on map and ensure you do not enter these sections of the park or bordering areas.

The Hamlin Park map has been drawn to Sprint Standard, which has a different symbol set, especially with respect to trail designation, and is drawn to 1:4000 scale with 5-meter contours. There will be a map flip for the long-advanced course. The legend is not printed on the map but we will have separate legends printed. A stump is a green X, a large tree is a green circle, and a rootstock is a brown triangle.

Multiple new trails may not be mapped due to recent increase in social paths. The darkness may further hinder your visibility of the numerous trails, so thumbing your map will be a useful tool. For all courses, safety bearing in any direction will take one to a road.

There is rain in the forecast which means water accumulation on some trails, where avoidance of puddles may be challenging. Come prepared for the darkness, elements, and to have a fun evening!


Pre-registration only!

6:30-8:00 pm – Check in
6:30-7:30 pm – Newcomer instruction
7:00-8:30 pm – Starts (start times are pre-assigned; sign up for a start time (form provided soon) by Thursday of event week at 9pm; if you don’t, we’ll pick one for you)
9:15 pm – Courses close*

*Wear a watch to ensure that you return to the finish by course closure time, even if you have to abandon your course to do soThose returning after course closure will be disqualified and will make the volunteer staff very grumpy.

Why is there a start window?

This event uses an interval start, which means that participants are started in waves instead of all at once. When you arrive at the start tent, find the chute for your course and follow the start volunteer’s instructions.


Pre-registration only!

$22 base price
– subtract $5 for CascadeOC members
– subtract $5 for using your own e-punch

-running as a group? Add $5 for each additional adult (16+) group member, no charge for additional children. Max group size is 3 due to COVID restrictions.

Become a member here.

What’s an e-punch?

An e-punch records your race. At each control, you’ll dip the e-punch into an electronic box, which will beep and flash as confirmation. After you finish, you’ll download the e-punch at the download tent and get a receipt that show which controls you visited and how long you took between each; these are your “splits.”

Part of the fun of orienteering is comparing your splits with people who completed the same course, and discussing the routes you took!


Online pre-registration closes  Wed 3/9/2022 9:00 PM. 

Select your start time here. If you don’t select one, we will assign you a start time.

Learn more about volunteering

Volunteers make these events happen! You can volunteer and participate on the same day, plus earn volunteer points to earn a free meet.



Parking is available at Hamlin Park.


Looking for a carpool? Join the Yahoo listserv and share your request to find a ride.


With its combination of varied contours and runnable forest, Hamlin Park was one of our favorite training maps for years. The contours remain, but the park has increasingly focused on planting new forest undergrowth–perhaps necessary in a popular city park that gets constant foot traffic. So today most contour recognition happens from the trails.

Read more on the map page

Navigational Challenge: 5/10

Physical Challenge: 3/10


Return to the Finish
All participants MUST return to the finish and download their e-punch or turn in their punch card.

Even if you have not finished your course, you must still return to the the finish and confirm with event staff that you have returned safely.

Out of Bounds
Some areas may be marked out of bounds. It is imperative to respect these boundaries to maintain our relationships with land managers. Participants MUST NOT go out of bounds. Any participant caught going out of bounds will be disqualified.

Course Closure
All participants MUST return to the finish by course closure time. If a participant does not return by course closure, event volunteers will begin coordinating a search party.

If you need a long time on the course, start as early in the start window as possible, wear a watch, and be prepared to cut your course short to make it back by the course closure time.

All participants MUST carry a whistle on the course. Complimentary whistles are available at the start tent (please only take one).

If you are injured on the course and need assistance, blow three long blasts to call for help.

If you hear a call for help, abandon your course to find the person in distress.

Part of the fun and fairness of orienteering is navigating your own course, so please be polite when you find a checkpoint and don’t holler that you’ve found it.