You asked: How should I train for uphill cycling?

Do It: Find a short climb or series of climbs that takes about 2 minutes to crest. Wind up before you hit the climb, so you’re at LT (RPE 7 to 8) as soon as the hill starts. Climb at LT for 90 seconds, then go as fast as you can (RPE 9 to 10) for the final 30 seconds all the way to the top. Repeat four to six times.