The first part of this page contains information about the Middle and Long Distance races.  The second part contains information for the Knock-Out Sprint.  

Middle and Long Race Details

Class Selection

Age Class Races

If you are registering in the Age Class Races, and you are under 21 you are permitted to "race up" if you wish.  For instance, if you are a 15 year old male, you can register in M16-, M20- or M21.  If you are 35 or over, you can "race down" if you wish. For instance a 47 year old female can register in F45+, F35+ or F21. Anyone between 21 and 34 years old has no choice in the age class.  They will be in F21 or M21, with the exception of the "short" option.  M16-S, F16-S, M21S and F21S  are somewhat shorter ("S" stands for "short") than their counterpart courses to give an option for people who do not want to tackle the full length of their age class course.

Note that you will be required to race in the same class in both the Middle and the Long events to qualify for awards, since they are based on total combined time for the two days.

Short Courses 

If your age class course is longer than you would like, we offer "S" (for short) options for some age classes.

If you are in one of the age classes listed in the table below, you can register for the Short course option as indicated.  Note that there are no awards for the "S" classes, but it does give you the opportunity to participate at your personal level of comfort. 

Course Age Class Short Course 
1 M21, M20-, M18- M21S
2 F21, F20- F21S
3 M16- M16-S
4 F16- F16-S

Recreational Courses

If you are registering in the Recreational Courses, you can select either the Novice or the Intermediate course. 

The Novice course will be completely on trails, with controls along the trail - if you have never orienteered or have no experience map reading, this is a great place to start. 

The Intermediate course will add a little more challenge with making decisions on route choices but there will be trails and other linear features to help keep you orientated.  

Note: If this is your first big meet you may want to read this description of how it differs from a casual non-competitive event.  It will also give you greater detail about your class options.

Course / Class Table

Course Male Classes Female Classes Recreational Classes
1 M10- F10-  
2 M12- F12- Novice 
3 M14-, M16-S F14-, F16-S  
4 M16- F16- Intermediate
5 M75+, M80+, M85+, M90+

F75+, F80+, F85+, F90+

6 M21S, M65+ F18-, F21S, F45+, F55+, F65+  
7 M18-, M45+, M55+ F20-, F21, F35+  
8 M20-, M21, M35+    

Course Descriptions

It is sometimes helpful to have a feel for the length of the courses when deciding whether to race in your age class, or to race "up" or "down" or select an "S" course.  It may also be helpful in selecting the recreational course that is right for you.  The following table offers approximate values and should assist in your decision making.  Actual course data (length, number of controls, climb and map scale) will be published once the course planners have finished preparing the courses.

The age classes and Technical Difficulty levels and recommended winning times (RWTs) assigned to each course are as per Orienteering Canada's Course and Category Guidelines (updated March 2020).


Middle Distance (Saturday)

Long Distance (Sunday)


Technical Difficulty Level 

RWT* (min) Length (km) RWT*
Length (km) 
1 1 - Beginner 20-25  1.5 to 2.0 30-35 2.0 to 3.0
2 2 - Novice 20-25 2.0 to 2.5 30-35 2.5 to 3.5
3 3 - Intermediate 20-25 2.5 to 3.0 30-35 3.5 to 4.5
4 3- Intermediate 25-30 2.5 to 3.0 50-55 4.5 to 5.5
5 4 - Veteran 30-35 2.0 to 3.0 45-50 3.0 to 4.0
6 5 - Expert & Elite 30-35 3.0 to 4.0 50-55 4.0 to 5.5
7 5 - Expert & Elite 30-35  4.0 to 5.0 60-70 6.0 to 8.0
8 5 - Expert & Elite 30-35 4.5 to 5.5 80-90 9.0 to 12.0

 *RWT = Recommended Winning Time

Course Setter's Notes

We will have course setter notes here for you once our course setters have been out in the field and set some courses for you!  Stay tuned!


Start Lists

The start list for Saturday will be published here within the week before the event.  Sunday (Chase Start Long) start lists will be posted on Saturday evening, after the Middle course.


Knock-Out Sprint

The Knock-Out Sprint is a new format of Sprint Race that has been introduced by the IOF at the World Championship level and that will be part of the 2024 North American Orienteering Championships.  Organizers of the 2023 Ottawa O-Fest are including a Knock-Out Sprint as a "practice round" to make sure we know what to do for NAOC 2024!  We are hoping that everyone will participate - for the first couple of rounds to run a fun, short sprint race, and after that to watch the top competitors in the semi-final and final rounds, as they are head-to-head.  It will be very exciting.  Stay tuned on this site as we add more information to help everyone learn more about the Knock-Out Sprint format and how we will be running our version of it this year!

 Knock-Out Sprint Information

There will be a co-ed sprint qualification race in the morning, followed by two 3-round Knock-Out (KO) Sprint tournaments for the fastest male and female qualifiers, plus a series of co-ed mass-start sprint races for everyone else (aka spectator races) in the afternoon. Everyone will have the opportunity to race twice, while six men and six women will race four times. A provisional schedule for the day’s events is given below.  Check back here for revisions and updates. 

For the qualification race, participants will be randomly assigned to one of three heats to be run on three similar but different sprint courses. Three runners will start at the same time, one per heat. The start interval between successive starts will be 60 seconds, or as required to allow all participants to start within a 90 minute start window. The top twelve men and women in each heat will advance to the KO Sprint tournaments, with their assignment into the quarter-final heats determined by their ranking in the qualification race. For everyone else, your ranking in the qualification race will determine your assignment to one of the afternoon’s mass-start spectator races, with the goal of having participants with similar speeds/abilities competing head-to-head. For example, the four fastest remaining finishers from each qualification heat (of those not advancing to the KO Sprint tournaments) will enter spectator race A, while the next four fastest will move on to spectator race B, etc. The field size for each spectator race will be around 12-15 participants, depending on the total number of entries. All participants are encouraged to stick around after their race to cheer on their favourite runners competing head-to-head in the exciting KO Sprint races.

The KO sprint tournaments will follow the format used in recent World Cup events and World Championships.  Both men’s and women’s tournaments will feature 36 participants and three rounds; 6 quarter-finals, 3 semi-finals and one final. All tournament races are mass-start with 6 runners competing head-to-head.  The top 3 finishers in each quarter-final advance to the 3 semi-finals, where the top two in each semi-final advance to the six-person final. Qualifiers for the semi-finals will be assigned to one of the three semi-final heats based on their placing in the quarter final races. Any or all courses may include forking.  

Further information on the maps and terrain and other race details will be added in future as planning advances. Although the courses have not yet been finalized, the following approximate lengths are anticipated.

Provisional Course Lengths

Qualification 1.5-2 km
Spectator race 1.5-2 km
KO Sprint Quarter-final 1.5-2 km
KO Sprint Semi-final 1.5-2 km
KO Sprint Final 1.5-2 km

Provisional Schedule

9:30-10:59 Qualification race starts Individual starts with ~60s start interval
12:00 Qualification course closed  
12:00-13:00 Lunch  
13:00-13:25 KO Sprint quarter-final starts, men 6 races with 5 minute start interval
13:30-13:55 KO Sprint quarter-final starts, women 6 races with 5 minute start interval
14:15-14:45 Spectator race starts Up to 10 races with 3 minute start interval
15:00-17:00 Barbecue(à la carte)
15:15-15:35 KO Sprint semi-final starts, men 3 races with 10 minute start interval
15:45 Spectator course closed  
15:45-16:05 KO Sprint semi-final starts, women 3 races with 10 minute start interval
16:20 KO Sprint final, men  
16:40 KO Sprint final, women  
17:00 KO Sprint Awards Ceremony  

Start Lists for the Qualifying round of the Knock Out Sprint will be posted here as well.