South Arkansas
North Colorado but that's not really north for us.

I haven't traveled very much

Now me I have drove to Tennessee by myself. Now growing up we did go to Kansas and Texas and we went to Florida. We even took the train once and went up there by the Great lakes to see a uncle

By car, and not counting flyovers:

Nearly 63° N (Northwest Territories, Canada)

Nearly 47° S (Slope Point, NZ)

By bicycle, ridden from our central PA home:

North: La Patrie, Quebec

South: around Hagerstown MD

And just to brag: (West: Pacific Coast of WA State)

Isafjdour Iceland at 66N. Some point on that cruise I got a certificate to say I passed over the Arctic Circle. Furthest place south was the Canary Islands.

Fairbanks Alaska or A place called Tungsten in the Northwest Territories of Canada. Not sure which one is further north. Tierra Del Fuego at the southern tip of south America

I have hunted moose and caribou multiple times above the Artic Circle in Alaska.........and for south? Peru.

Farthest south I've been is Phoenix, Arizona. In August. Would not recommend.

Farthest north I've been was a guest ranch in British Columbia. Absolutely gorgeous country, lots of amazing stuff to do. My mom got to go on a cattle drive while my dad and I went fishing.

I've yet to brave the arctic circle. Farthest North...cottage country a few hours away from me.
South would be Florida.

On the continent on which I live, that would be Portland, Maine and a little further north of it...and Key West, Florida.

North Pole of Canada and Argentina.
Never been to Antarctica, but it's on the list.

Furthest north was the northwest territory near west Saskatchewan. Furthest south was Christmas Island. Both were for fishing trips.

N: Fairbanks, Alaska (64.8N), which is slightly north of my #2, Husafell, Iceland
S: Probably Cape of Good Hope, South Africa (34.3S), although maybe somewhere else along the south coast of S Africa

Yukon, Canada
Melbourne, Australia

Alaska and Texas

Maine and Florida

Iceland and Singapore... both for work.

Scotland and Tunisia

10 miles south of the artic circle
and down to St Thomas/St John

Canada and Mexico

Norway

Malta

Denali National Park, Alaska 1995
Sydney, Australia 1969

Chicago to New Orleans

Norway, once to a bit above the Arctic Circle.

SW France, to the foothills of the Pyrenees.

North: Toledo, Ohio

South: Cairo, Egypt

Alaska and Hawaii

Canada and Mexico

Canada and mexico.

N - Ireland
S - Grand Cayman island

Oregon, and Alabama.

Someplace in the Caribbean and I guess Toronto...

Jasper, Alberta Canada and Puerto Rico

Raidel (north), the southern coast of my homeland (south).

Seattle and Guantanamo bay

acapulco mexico and my province of bc

Colorado to the north and Cozumel, MX to the south.

Somewhere in the Arctic Ocean off North Norway and Port of Spain in Trinidad.

Canada to the North and Mexico to the South

Seattle WA USA and Mexico City Mexico.

Canada and the Florida Keys

Wyoming and Cocoa Beach, Florida

The furthest North in Canada was Victoria Island and the most southern was Punta Arenas in Chile.

North - Edmonton

South - Bermuda

Iceland to the north, Tahiti to the south

Anchorage, Alaska

Wellington, New Zealand

North, Campbell MN
South, Waikiki HI

Canada (Vancouver, Winnipeg))
Mexico (Oaxaca)

Glacier National Park, Montana
Key West, Florida

Hmm. Scotland and Florida

Iceland, Norway in the north, Brazil and Argentina in the South.

Fort Wainwright, AK
Melbourne, Australia