Join the herd.

You thought your thru- hike was far? These crit­ters put in dis­tances that make our walks seem pedes­trian— and ev­ery year is a yo-yo.

Backpacker - - PLAY LIST -

CARIBOU

Ev­ery sum­mer, these un­gu­lates make the 600- mile trek from Alaska’s Brooks Range to the coastal plains of the Arc­tic Na­tional Wildlife Refuge, the long­est land mi­gra­tion in North Amer­ica. See it July through Au­gust in De­nali Na­tional Park, AK

MONARCH BUT­TER­FLY

The king of but­ter­flies flut­ters as many as 3,000 miles from all across the U. S. to Mex­ico ev­ery year. The out- and- back is so tax­ing that it can span up to five gen­er­a­tions of the in­sects.

See it Au­gust through Oc­to­ber in St. Marks Na­tional Wildlife Refuge, FL

SEMIPALMATED SANDPIPER

Small, but not out of shape: This 5- inch shore­bird trav­els 5,000 to 10,000 miles from the far north­ern reaches of Canada to Mex­ico and South Amer­ica ev­ery year.

See it May and Septem­ber in Mat­ta­mus­keet Na­tional Wildlife Refuge, NC

GRAY WHALE

Mas­sive an­i­mal = mas­sive dis­tance. Gray whales have the long­est- known mi­gra­tion of any mam­mal, some 6,000 miles from their breed­ing grounds in Mex­ico to the Arc­tic La­goons north of Alaska. See it Jan­uary in Pt. Reyes Na­tional Seashore, CA

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