Žvahov - Ivův běh is a short cross/trail race in Prague 5, held in August on a 3.7 km loop around Žvahov and Děvín. The first category typically begins in the evening, starting on the road below the TJ Zlíchov football field, near the Praha-Žvahov train stop. It is a low-key local event with a 50 CZK entry fee, organized by SABZO Praha.
The course features varied terrain in the Děvín area, making it a quick off-road effort rather than a flat road race. The event has reached at least its ninth edition and is part of the SABZO Praha race series. August in Prague generally brings warm conditions, with common sunny days and moderate rainfall, so the race can feel fast but still exposed depending on the evening weather.