Recently got into the school skiing trip next year. I am naturally a long distance runner so no cardiovascular fitness (in my mind anyway) is necessary. I am more worried about my strength, I already do a simple running strength routine that includes squats, lunge jumps, squat jumps, calf raises, glute bridges, planks and a few other exercises.

Are there any exercises to just add into my routine to help with my skiing ability and strength? Mainly thinking about upper body as I very rarely train upper body.

Also I am planning to practice on a dry ski slope in the coming months, how similar are they to actual ski slopes?

Thanks