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Terrain Analysis: Complex Relief and Night Orienteering at Antalya O-Fest

Terrain Analysis: Complex Relief and Night Orienteering at Antalya O-Fest 2025.

Event: Antalya O-Fest, Night-O, Lara (10/29/2025). Turkey.
Organising clubs
Eon Tours 

Extremely complex terrain with no clearly defined relief-based navigational lines.
As a result, navigation relied heavily on numerous bearing sections.

However, the terrain was filled with many similar-looking features — depressions and hill tops — making it very easy to confuse one with another.


Night conditions added an extra level of challenge. The already difficult navigation was further complicated by a tricky course layout and the presence of many visible headlamps from other runners moving chaotically in all directions.

To better highlight the complex terrain structure, I marked one of the index (thicker) contours in blue on the map. This makes the subtle relief forms more visible and helps better understand the challenge.

Altogether, this made the competition a very technically demanding event.
Even without being on the terrain, just by analyzing the map, I can assume there were a huge number of both major and minor mistakes. You can see this clearly by looking at the GPS tracks in LiveLox.

Route planning — especially choosing the right places to verify your current location — becomes absolutely crucial in such terrain. 

The book Planning Reliable Routes will definitely help you better adapt your routes to different types of terrain by understanding the underlying navigational model of the landscape.


source: LiveLox

Aleksndr Alekseyonok, October 23, 2025.
 

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