Short
4 x 1000m / 2 min easy
- Ski four 1000 meter pieces. Ski for two minutes at light pressure between each 1000.
Medium
4 x 2000m / 1 min easy
- Ski four 2000 meter pieces. Ski for one minute at light pressure between each 2000.
Long
4 x 5000m / 3 min easy
- Ski four 5000 meter pieces. Ski for three minutes at light pressure between each piece.