Why winter matters for your next goal

Winter is the foundation of your season. With most events still months away, it’s the ideal time to build endurance, work on weaknesses and develop the base you’ll rely on later in the year.

In JOIN, this is often where a build plan comes in. A Stamina Builder or FTP Builder helps you lay a solid foundation, so your body is ready for the more specific training that follows as your event gets closer. The type of riding you choose this winter can support that foundation in different ways.

What matters most is consistency. A winter of steady, regular training almost always beats a few heroic weeks followed by a long break. So the best winter option is the one that keeps you on the bike.

More than easy miles: why winter needs intensity

Winter is often treated as a season of long, easy miles, but a Norwegian study by Rønnestad and colleagues (2014) suggests that leaving out intensity comes at a price. They followed well-trained cyclists through the eight weeks after their racing season. One group trained only at low intensity. The other did largely the same, but added one high-intensity interval session every seven to ten days. The interval group not only held on to their fitness, but they also carried that advantage through the entire 16-week build-up that followed. By the start of the next season, their power at lactate threshold and their 40-minute time-trial performance were still clearly ahead, even though both groups had trained the same way in the meantime. Physiologically, this makes sense: high-intensity work is the strongest signal for maintaining VO₂max and the fraction of it you can sustain, and that capacity is far quicker to lose than to rebuild. For the amateur cyclist, the lesson is reassuring rather than demanding. You don’t need to suffer through intervals all winter. One short, hard session a week on top of your endurance rides is enough to keep the engine primed, so that spring becomes a time to build on your fitness instead of winning it back.

Road: steady endurance on familiar ground

Riding on the road in winter is the most direct way to keep building the fitness you’ll need for road events like gran fondos and sportives. Long, steady rides develop your aerobic base and get you used to spending hours in the saddle.

The challenge is the weather. Cold, rain, wind and darkness can make outdoor road rides less appealing, and sometimes less safe. That’s why many riders save the road for the weekend, when there’s daylight and time for a longer ride, and train indoors during the week.

Best for: riders preparing for road events who want to keep building endurance outdoors.

Indoor: structure, whatever the weather

When it’s dark at 5 p.m. and pouring with rain, indoor training keeps your plan on track. No weather to check, no lights to charge, and no time lost getting ready. You can be on the bike within minutes and make the most of a short weekday session.

Indoor riding is also where structure shines. Without traffic lights, junctions or wind, you can hit your power targets precisely, which makes intervals especially effective. That makes it ideal for working on your FTP or other specific areas you want to improve.

It doesn’t have to be boring, either. Platforms like Zwift and ROUVY let you ride virtual routes, join group rides or race other riders from home. And because JOIN connects to both, your planned workouts are sent straight to your trainer, so you don’t have to set anything up yourself. Want some company? Join us every Thursday for the JOIN x Lanterne Rouge x Zwift: The Indoor Series 2.0, building towards the Zwift Gran Fondo on December 19.

The main downsides are that indoor riding can feel harder mentally over long durations, and you miss out on bike handling and the variety of riding outside. That’s why indoor training works best as part of a mix, especially for weekday intervals and on days when the weather leaves you no choice.

Best for: structured intervals, short weekday sessions and staying consistent whatever the weather.

Gravel: long days and a change of scenery

Gravel riding is a great way to keep building endurance while giving your mind a break from the same old routes. Quiet forest roads and trails are often more sheltered from the wind, traffic is minimal, and the slower speeds mean you stay warmer than on a fast road descent.

Gravel also brings extra benefits. Riding on loose surfaces improves your bike handling, and the constant small changes in terrain and pace train your body in a slightly different way than smooth tarmac. That variety can help keep training fresh and support your long-term progress.

For riders preparing for a gravel event, winter gravel rides are especially valuable. You get used to long hours on rough terrain, learn how your body and bike respond, and practise fueling on longer rides.

Best for: riders training for gravel events, riders who want long endurance rides with less traffic, and anyone looking for a fresh challenge.

Cyclocross: short, intense and seriously fun

Cyclocross is made for winter. Races are short, usually between 30 and 60 minutes, and the effort stays high from start to finish. Riders tackle mud, sand, grass and obstacles, often jumping off the bike to run before remounting and racing on.

That intensity makes cyclocross an excellent way to develop your top-end power and your ability to recover quickly between hard efforts. It also sharpens your bike handling like nothing else. Riding in mud and tight corners teaches you balance and control that carry over to every kind of riding.

The trade-off is that cyclocross on its own doesn’t build much long endurance. If your main goal is a long gran fondo or gravel race, it works best alongside steady rides on the road, gravel or indoors. A cyclocross race on the weekend can also be a fun short-term goal that gives you something to aim for during winter, while your main goal is still months away.

Best for: riders who want intense, fun winter racing, and anyone looking to improve power and bike handling.

Mixing it up

You don’t have to choose just one. In fact, combining different types of riding can be one of the best things you do for your motivation. A change of environment keeps training fresh, reduces the risk of mental burnout and can help prevent overtraining.

A winter week might include structured intervals indoors on a weekday evening, a long gravel or road ride on Saturday, and an occasional cyclocross race or social ride on Sunday. Each one contributes something different, and together they build a more complete rider.

The key is making sure everything fits together. Hard cyclocross efforts, long gravel days and tough indoor intervals all add up, so you need enough recovery in between.

How JOIN keeps your winter on track

Winter is unpredictable. Bad weather cancels rides, busy weeks get in the way, and some days your body simply isn’t ready for a hard session. That’s where JOIN helps.

Your JOIN training plan adapts to your schedule and your activities, so whether you ride indoors, on the road, on gravel or race cyclocross, your plan adjusts around what you actually do. If you connect your WHOOP or Oura, your daily recovery score also feeds into JOIN Readiness, so your plan eases off when your body needs rest and lets you push when you’re ready.

And because every event in JOIN shows a recommended JOIN level range, you can see how your winter training is moving you towards your goal. Following your level through the winter shows you exactly how your consistency is paying off.

Choose the winter that keeps you riding

There’s no single right answer. Road gives you steady endurance, indoor riding brings structure whatever the weather, gravel adds variety and long days with fewer cars, and cyclocross brings intensity, skills and a lot of fun. The best choice depends on your goal, your motivation and what keeps you coming back to the bike every week.

Set your goal in JOIN, pick the riding you enjoy, and let your plan take care of the rest. Spring will be here sooner than you think.