Kristina Palten is a Swedish ultrarunner who currently holds the 48 hour world record on a treadmill, and is the former world record holder for 12 hours on a treadmill.
She has also run 3,262 km from Istanbul (Turkey) to Tenhola (Finland).. then kayaked 493 kilometers to Stockholm.
Kristina's most recent adventure was running 1,841 km alone through Iran.
One of her main reasons was to challenge her own prejudices against this Muslim country.
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