I'm from Munich, Germany. There is a German highest mountain Zugspitze (2.962m) close to the city (2 hours with a train), and I want to climb it in spring. Base camp is 700m high.
There are a couple of possible ways to hike there. Each takes from 8 to 10 hours and has from 8 to 21 km. I prefer the 21km road, because its the easiest one and starts from train station in the city under the mountain.
About me: 20 years old, fit, BMI 22-23, have done swimming for 2 years, now do gym 3 times a week. I also can run, 5 km with 5-6 pace, larger distances are boring for me. Now I quit running to gain some weight. I'm also a skier, have been skiing in Tirol, Austria, pretty high 2200-3400m altitude, so I can imagine what it's like.
Since I'm not much into hiking, have done it a couple of times as I was a kid, how can I prepare my body for such a hike? I suppose I need some kind of endurance training and do more leg days in a gym.
To mention, I have suitable gear, such as hiking boots (Haix P9), and baselayers and backpack.
I'll appreciate any helpful advice or strategy.
Suggested below answer What are some proven methods of training for week long backpacking trips at high altitude? has more information about acclimatisation and long trips. But was useful in general.
I also found the information about altitude sickness in this one: Altitude sickness when going from sea level to 14,000 ft (4,200m) in a single day.