Technically, you can attempt to climb the Matterhorn with no prior mountaineering experience, but in 2026, it is highly discouraged and physically dangerous without a mandatory "preparation week." Most reputable guide services in Zermatt will not take a complete novice straight to the summit; instead, they require a 5-to-6-day training program that includes acclimatization hikes and technical instruction on the nearby Breithorn or Riffelhorn. The Matterhorn is not a "walk-up" peak; it requires sustained Class 3 and 4 rock scrambling, often in crampons on icy terrain, and demands high-level cardiovascular endurance. A complete lack of experience can lead to "summit day rejection" by your guide if they determine your fitness or technical skills are insufficient for the final 1,200-meter push. For a safe and successful 2026 ascent, beginners are advised to spend several months in the gym and at local rock climbing walls before heading to the Alps, as the "Mountain of Mountains" is a serious undertaking that rewards preparation and respects those who treat its 4,478-meter peak with the appropriate level of caution.