This guide contains 80 hidden roads in 20 counties on Euro Truck Simulator 2. It is actual for June 2025, on ETS2 1.54 (and will be updated if new roads will be added on 1.55 or later). Some roads are periodically disappear during map reworks and some new are being added in new game versions. Mostly I added marked roads but also some easter eggs are available.
To avoid spoilers and discover all hidden roads and secrets yourself better to skip the video.

List of cities shown in video by countries https://trucksim.top/y9t6 (ETS2 and ATS)