[comrade1]

This is surprisingly close. I'd never thought of it like this but it's immediately clear what you mean.

Especially if it's off-piste but an area that you're familiar with. You plan out your run multiple steps before you start, and once you're on the hill you have to be flexible enough to change course and replan on the fly for another multiple steps ahead, all while you're barreling down a hill.

And then there's the moments of sheer terror when you see snow sliding past you, or when you come up on a recent avalanche 1) have to avoid the packed ice and 2) look out for what caused the avalanche.

You're absolutely right - I get a kind of rush from coding that's similar to skiing off-piste. Not quite the same but not as different as one would think.