Q: Could I do half running, half rollerskiing for the over distance workout?
A: Doing anything for over 3 hours is a long time! It’s always easier to tackle these workouts with a group of skiers or even having one of your friends bike along side.
Splitting the workout is an option. You are achieving the biggest goal of the workout, which is building your aerobic base. What are you sacrificing by switching to running part way through? The strength associated with skiing. This is secondary to the aerobic base building we just mentioned. With our elite athletes we like to do a 3 hour double pole session. During this workout we try not to stride at any cost. The athletes are working on ski specific strength that is hard to achieve any other way.
All that being said, training needs to be fun. Success is hard to come by when it feels like a chore to get out there every day. Splitting the over distance workout into running in skiing can be a great way to mix it up and make the workout feel shorter.
We hope this wasn’t too confusing. To sum it up, an occasional split workout is ok, but you will want to get in some longer skis as well!