I do my training plan on time and heart rate zones, and only occasionally record distance in the log.
This time of year, a week might have two 90 minute z1 runs, a two hour z1 bike ride, and a one hour z1 rollerski. I try to do some speed about every third week in June, most often a 20 minute race pace interval or 3x4(4) intervals. Pretty low on intensity and time compared to the elite skiers, but it seems to work for this very non-elite master.
The big months are October and November, with more hours and two high intensity workouts a week. May is getting fit to train, June and July are building up, August and September are slowly increasing intensity. By September, about 60% of the time is on rollerskis.
Training is personal, and depends on your circumstances, history, and targets for the next season. Probably the most critical element in training for non-elite skiers is having fun :-)