I had a bad reputation for running starvation trips in my youth. I'm sure it wasn't all my fault...
Came out to the top end of [Lake Monowai](http://www.topomap.co.nz/NZTopoMap?v=2&ll=-45.861982,167.455845&z=13) at the end of Easter once, expecting to catch a water taxi back to the car. Got to the lake edge, water taxi was disappearing into the distance. Decided to take a shortcut around the lake edge, it took us the rest of that day, then two more days with a gulp of fresh air and a cup of cold water for dinner breakfast and lunch before we got out.
Another time we came down off the Paparoa tops at the end of a trip, weather getting worse, got to the Ballroom overhang and couldn't cross the Fox river. Food for one lunch left, sat there for two more nights before we could get across and out in the afternoon.
The biggest distance/time/food miscalculation was a trip through the middle of Strathcona park, Vancouver Island. Needed to get the car back from Gold River after spending three weeks kayaking down to Tofino. Decided we'd walk back through the mountains, got a water taxi to the head of the fiord inland from [Ahousat](https://goo.gl/maps/XynSLHuovhT2)
Took a week's food, tent fly. I had walking shoes, cheap warehouse style non proofed nylon anorak, a couple of plastic rubbish bags and a roll of electrical tape to turn them into a raincoat if it started raining. (My partner had a real raincoat and boots) It was October, so it started snowing as we got on the tops, we were camping on the tops by frozen tarns, tent fly and sleeping bags came out of the packs frozen. No going back due to starting with the water taxi from the head of a fiord at the end of the season.
End of day five fly camping by frozen tarns with snow blowing through we had two days of food left and five more days to go. Tricky southern Fiordland like transalpine country, rope and ice axe would have been handy, we had to manage with a couple of bush poles. Ate our last food at lunchtime below the last pass, still had the last two and a half days to go on fresh air and cold water. Got to Gold River evening of day 10, it took more than an hour to get the car started. Almost too giddy to drive in the dark and rain to somewhere we could get something to eat.
It was critical and fortunate we didn't make any mistakes, no radio or PLB, no tracks or huts to retreat to.