I have a 2 month old and a 2 year old and we have been married for 12 years or so. I have an agreement with my wife to ride one brevet/perm per month, which basically leaves her alone on a Saturday to take care of the kids from waking up, till bed (tough job). More so on 400k+.
My current training is 3 days per week, 2 rides/week at lunchtime (18 miles including a 1000' 10% climb), and one early morning 3+hour ride once a week, 5:30AM-8:45AM. Keeps my weekends free for the most part.
These 3 weekly rides, plus the once a month brevets/perms seem to keep me well in shape.
I used to commute for training, but now with the newborn my wife needs me in the morning and early evenings to help. Driving to work takes 15-20 minutes, riding takes 1 hour.
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SharpT