How does your winter cycling differ from summer cycling? Do you take some time off or change the amount of hours you ride?
My first winter cycling and I'm forced to do indoor bike trainer exercise plus sat & sun group ride.

I will only ride on weekends and spend more time running. I try to stay on the bike one time per week. I also lift more.

When it's winter it's time for .............M-O-U-N-T-A-I-N B-I-K-I-N-G!!!!!

In Michigan I limit myself to 25 degrees F and the roads have to be clear. This usually means about 1/3 of days on weekends get weathered out. Dress so that you just chilled standing there getting ready. Then the heat production vs wind chill is about correct for riding. In the warmer months 120-200 miles per week and in winter 40-80 miles per week.

My distance stays the same but in the winter very often instead riding my road bike on weekends (which means spandex and cycling shoes with covers) I will ride my steel commuter with platform pedals wearing jeans and a regular jacket. Somehow just easier to keep warm, makes stopping for lunch easier since I carry a u lock on it, and it has lights so I don't have to worry about being back at 4PM. Got studded tires for this winter so should be good to go for anything.

Winter cycling for me: Intensity is cut back, small ring riding/spinning, less out-of-saddle climbing, more sit-down climbing, maintenance/recovery/rejuvenating riding in prep for next spring/summer, shorter rides when it's really cold like when it's in the 20s F, more inclined to take a rest day and not feel bad about it.

I live in New Mexico,everything remains status quo!

Why run if you ride?

so you ride yearlong? No breaks?

So when does the intensity peak up?

which one do you ride? Pinarello, Motobecane Immortal Force, Diamondback, Fischer (German)

Do you lose your roadbike fitness?

Break for what?

Read it's good to take a break so your body can heal from summer rides

Houston TX here! But same comment. My winter riding isn't any different than my summer riding - except I sweat less.

I ride and run year round,at least 6 days a week.One day riding one day running,etc,at least 6 days per week .If it's inclement weather,I run,you can always run no matter what the weather is,so some weeks I'll run several day in a row until the weather clears.

Good for your. With the time change in Houston i can't ride at 5pm as I used to due to darkness.

It's a gradual build-up. Depends on what your goals are, when. For me, i start doing more big ring rides consistently by mid April, pushing myself more and more, then by June, my legs are ready for several weeks of structured very hard work (sprints, hill repeats, etc) which will carry me until August by which time I need a wk or two rest (easy flat rides) again. Then, several more wks of hard effort-days in September, which can carry me until November. Come November again it's time to dial it back again and just spin.

Any event/goals you target each year or just fitness

Since it's kind of cold and rainy all the time here in the winter and I don't want to spend too much time wearing heavy clothes, doing bike laundry, and bike maintenance, I only ride outside on Sunday. (I only have one set of clothes for each winter temperature range due to massive expense, though I have maybe 10 pair of summer shorts and jerseys.) During the week I ride rollers, hit the Stepmill, do spin class, lift weights, and ski. So it's a different mix at a slightly lower intensity, but about the same number of hours/week. I usually don't take any time completely off, other than a few days of vacation a few times a year, mostly in summer and fall.

I start to pick up the intensity and length of the weekend ride in February and gradually ramp it up into June and July.

It just means bib tights, thermal jerseys, full finger gloves, shoe covers, & a balaclava.

Rule #5 .// HTFU

RULE #9
// If you are out riding in bad weather, it means you are a badass. Period.
Fair-weather riding is a luxury reserved for Sunday afternoons and wide boulevards. Those who ride in foul weather – be it cold, wet, or inordinately hot – are members of a special club of riders who, on the morning of a big ride, pull back the curtain to check the weather and, upon seeing rain falling from the skies, allow a wry smile to spread across their face. This is a rider who loves the work.

What is this MTB you mention???
Winter mean Cyclocross season!!!

I like to keep riding through the winter. February and March were my lowest mileage months this year. The weather was a lot drier in December and January. I don't mind the rain if it starts during my ride or if I'm going on a group ride, but when it's cold and raining and I was planning on a solo ride, I generally just go to the gym instead.

Yes, somewhat, but it's much better than not riding at all. Mountain biking does help to keep hill climbing in good shape. However, it can allow you to lose some speed. The good news is, if I mountain bike, the full road fitness comes back much faster than if I don't ride.
I tried spin classes. BORING! I know that works to keep your road fitness, but I can't stand staying in one place.

When I was in North America, my pattern went something like this ...

Mid-October to the end of December ... ride less, catch up on stuff around the house, do some cross-training like cross-country skiing, snowshoeing, walking, weightlifting, yoga ...

January to March ... ride the trainer, go to spinning classes, ride outside whenever possible ... generally build up ...

April to mid-October ... ride lots.

Primarily just fitness. I retired from racing in 1997 but I still train similarly b/c I love the results (e.g., a trim, fit, toned body; flat stomach; 15 lb weight drop; getting strong enough to beat some younger and lighter people I ride with to top of tough hills; being able to master all the tough hills in my area at will). There are a couple of hilly metric centuries that I do that I like to be well prepared for.