Talk:Geralt of Rivia/@comment-188.24.205.52-20151108173756/@comment-83.82.16.90-20151109130620

It's not really known. Sorcerers and Sorceresses like Yen can live for centuries with little problem, and Witchers have no known maximum lifespan since they all tend to die in battle quite a bit before that. Vesemir still seemed to be in perfect shape despite looking a bit older than Geralt and he's estimated to be anywhere between 3 and 4 centuries old.

My guess is that while they're not truly immortal, they can probably last for a long damn time before any real aging sets in.