Cycling isn’t a static thermal environment. Heat load swings minute by minute with power and wind, yet most garments are designed around fixed temperature ratings. That mismatch explains why riders overheat on climbs, freeze on descents, and rarely feel “in balance” in winter.

For decades we’ve equated protection with resistance; AirCore replaces that logic with regulation. The Gabba taught us how to dress for weather. AirCore teaches us how to stay in balance with it.

This post was inspired by the mismatch between perception of the gravel Stelvio route - also referred to as ‘the fourth way’ - based on a popular summer 2025 GCN video, and the actual experience of riding it. This is at once a cautionary tale and a valorization of the route. The last thing I or anyone would want is for a novice gravel rider to take on the route and fall off a cliff.

Read, listen, or both. I sat down with Castelli to talk about getting the most from their line of cold weather clothing, which dipped into general principles, and numerous tips and tricks riders can use to steepen the learning curve and create great winter cycling experiences. The blog post elaborates on numerous threads within the podcast, and functions as a complementary resource.

The second explosion sounds louder than the first, probably because I’m conscious from the go this time. What time? 05:00. What is going on here? I feel fairly certain that was some sort of cannon, and wow, did it ever pack a concussive punch. It didn’t go off in Mals, I’m pretty sure; somewhere else in the valley. An avalanche cannon? If so, why, it’s August. There’s no snow around here.

What to pack for 4 weeks riding in Spain and France? I have a plan, let’s see how it goes!

Vermont's 6 Gaps ride is iconic, mythic, a rite of passage. But we'd done it, and were left wondering, what if? What if there was a 6 Gaps route on dirt? What was possible?

One bike, three exploratory phases of endurance cycling progression, and numerous insights around why riding my bike long and far in 2020 wound up helping me maintain my mental health and well-being in a way that distinguishes cycling from any other endurance sport.

One weekend, two dirt races. BORCA’s Spring Chicken Enduro MTB race, and OBC’s Almonte Paris-Roubaix are the perfect pairing for weekend of racing bikes on dirt.

Riding bikes doesn’t have to be just about riding bikes. These machines are catalytic; they open and expand possibility like no other technology can. Sometimes the adventures they underpin unfold as planned, but if we’re honest, these aren’t really adventures, are they? Our day spent riding, scrambling, and hiking from Bordighera to Limone Piemonte, Italy, was a once-in-a-lifetime experience.

Can an aluminum fat bike actually feel good enough to want to ride it a lot? What would it take to make it rule?

How often do products actually live up to their name? Meet Castelli’s Unlimited Puffy jacket.

It’s Monday morning, and I’m a wee bit hobbled. Yesterday was HARD; I’m wondering whether it was my hardest ride of 2021. I’ll go with yes, and feel tempted to say it was ‘epic,’ because I wasn’t sure I was going to make it home without calling a life-line until I was 10km from home.

The Polare 3 departs significantly from its predecessor. Tasked with covering the coldest temperature range Castelli designs and builds for, the 3 prioritizes dry-cold more than the NanoFlex, which is biased toward wet conditions.

For those with ample supplies of motivation and zeal, but insufficient kit for spring riding, this is a short guide to a selection of key pieces from Castelli. Quality cycling kit is expensive, so I hope this helps inform decisions that lead to many hours of happy riding, not regrets.

Two-hundred kilometer rides every month through winter; doable? All I actually needed was an objective, something to look forward to through the dreary days of November, as daylight hours diminished rapidly, and the stark reality settled in: winter was coming. And not just any winter; COVID-winter.