How much harder is telemark skiing than alpine skiing?

Telemark skiing is significantly more physically demanding and technically challenging than alpine skiing, especially in the learning phase. The telemark turn requires quad and core strength that alpine skiing doesn't demand, and the lead change (switching which foot is forward) adds a coordination challenge. Expect to spend at least a full season learning basic linked tele turns, compared to days or weeks for basic alpine turns. However, the learning curve flattens as you develop strength and technique, and many skiers find the tele turn becomes intuitive and deeply rewarding over time.