n.

a journey by ox wagon (especially an organized migration by a group of settlers)

any long and difficult trip

70,000 Hindus trekked through India
I SHOULD HAVE TREKKED WITH SCOTT TO ANTARCTICA
A North Korean defector trekked 6,000 miles on crutches to flee — now he helps others escape
Made in China ; You've Trekked the Great Wall and Loved the Shanghai Buzz but Where to Relax? Hainan's Beaches Are the Answer, Says ...
Bovine Trypanosomiasis in Nigeria. IV. Observations on Cattle trekked along a Trade-Cattle Route through Areas infested with Tsetse ...
Bovine trypanosomiasis in Nigeria. V.-The tsetse-fly challenge to a herd of cattle trekked along a trade-cattle route.
The I-35 crusaders; Mark Mallman, Brother Ali and a dozen more local bands trekked to Austin, Texas, for last week's SXSW music fest...
U of M professor had a special way with frogs; Longtime faculty member David Merrell trekked ponds and swamps in search of reptiles ...
Harris of the Arctic: In April, the American Express Franklin Memorial Expedition Trekked 322 Kilometres across the Arctic, Followin...
Queen of the Castle ; Katharine Pooley Climbed Mountains, Travelled to the North Pole by Dog Sled and Trekked across Tasmania. Then ...