Shackleton went at it harder than most and set off for the South Pole in 1907 aboard the good ship Nimrod. He was bullied (gentleman's agreement) by Captain Scott who exacted a promise from Shackleton not to use the same base in McMurdo Sound as had been used on the 1901-1903 Discovery expedition, on which both chaps had served. Scott seemed to have the idea that he had exclusive rights to a whole chunk of Antarctica because he'd led a previous expedition there. Shackleton caved into the pressure but on arrival off the coast in early Summer 1908, found that McMurdo was really the only place he could safely disembark.
They then turned home, starving, beset with dysentery from old horse, with a ludicrously short time available so that they wouldn't literally miss the boat which was by prior agreement scheduled wrap up the expedition and depart on 1st March. But make it they did, boosted by discovering "Carlsbad plums, eggs, cakes, plum pudding, gingerbread and crystallised fruit" - no mere oatmeal for them - in Bluff Depot one week out.
Qualified, tentative huzzah?