The final stage of this years Yukon Arctic Ultra is being reached as the runners are on their way to the last checkpoints before the finish in Dawson City. Although a few more runners had to scratch it was possible to perform measurements and obtain blood samples at 230 mi and 300 mi checkpoints respectively. Now three runners remain on their way to Dawson – the 430 mile finish.

Hanno leaves Pelly Crossing for his final stage.

Hanno leaves Pelly Crossing for his final stage.

Trail-markers are continuously checked and replaced by skidoo-drivers - photographer Yann is happy to fill in.

Trail-markers are continuously checked and replaced by skidoo-drivers – photographer Yann is happy to fill in.

Jörn trying to find order in the haphazardly scattered equipment.

Jörn trying to find order in the haphazardly scattered equipment.

Desperate circumstances sometimes require desperate - coffee-cups.

Desperate circumstances sometimes require desperate – coffee-cups.

Pipetting the precious serum-samples.

Pipetting the precious serum-samples.

The final stretch towards Dawson City.

The final stretch towards Dawson City.