Control Descriptions

Orienteering is a worldwide sport. It is the aim of the IOF control description symbols to provide a standard means for orienteers from all countries to be able to understand control descriptions without ambiguity or the need for language translation.

How IOF control descriptions work

The purpose of a control description is to give greater precision to the picture given by the map of the control feature, and to indicate the location of the control flag in relation to this feature, thereby helping the competitor to better visualize the control site.

However, a good control is found primarily by map reading. Descriptions and codes can assist in this task, but should be kept as short and simple as is necessary to locate the control.

Note: Control descriptions should not be used to correct map errors.

Sample Control Description Sheet

The table to the left is the type that is typically given to each Orienteer for the Intermediate or Advanced courses. The table to the right or equivalent is provided for the Beginners’ courses.

Resources

This booklet shows how the control description symbols can be used to give more information and “precision” to each of controls’ feature(s) that are marked on the map:

  • IOF Control Descriptions 2018PDF
    • Starting on page 18 is a very instructive table of Control Description, Map Symbol, and simple terrain drawing for each of the most common land features.
    • IOF Control Descriptions 2018 (in page viewer):

Single page summarys:

  • IOF Control Descriptions 2018: PDF  JPG
  • Older IOF Control Descriptions 2004 for reference: PDF

Resource files courtesy of IOFMaprunner UK, and  Mike Minimum (OCIN)

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