In adult life Marx re-enacted those happy hikes with von Westphalen by declaiming scenes from Shakespeare, Dante and Goethe while leading his own family up to Hampstead Heath for Sunday picnics.
In which case, they'd probably be happier hiking around an island where a series of eco-tourism resorts offers a bracing, days-long trek between lodges that incorporate self-sustaining energy technology into elegant (but appropriately spartan) modern architecture.
The Vietnam War veteran, who grew up working in the potato sheds around Bakersfield, said he's happier hiking or riding his quarter horse, Sparky.
Most visitors are happy to hike the seven-day circular route that omits the peak.
"HAPPY HANUKKAH HIKE," a tour of the Jewish Lower East Side, including a kosher winery, a pickle stand and the largest synagogue in the area.
One instant favorite: A new -- hiccup -- happy hour hike of Avalon that hits watering holes serving up specialty island drinks.
If your dad is happiest while hiking up a mountain, lining up for a hole in one, or hitting the gym, consider a wearable fitness tracker.
Shorewalkers: 'Happy New Year's Day Hike' (Tuesday) This hike focuses on the north end of Manhattan, with stops at Highbridge Park and other local historical sites.
