I am currently in the middle of my competitive ski season for both Nordic and Skimo. in weeks when I am not racing I am doing two L3 interval sessions: one session is on flatfish terrain, the other is on uphill…usually very steep uphill. as you can imagine, I am moving much faster on the flatter terrain than I am going uphill….the uphill sessions require more power. My Evoke coach has me keeping the workouts separated. in the Spring, as I start transitioning to trail running/racing, intervals will remain similar but be done on foot….and in these running sessions, I often do the flat intervals on the road and focus on building speed/economy