Oddly enough, probably his best jump in actual distance cleared was his third, which is recorded as 26 - 5 3/4. (si.com)
Nikon Incline / Decline (ID) Technology provides horizontal distance and actual distance display modes to account for changes in elevation and terrain. (geekwrapped.com)
In other words, they disregarded actual distance and made their risk assessment based on political borders that have nothing to do with seismology. (scientificamerican.com)