Spring Triathlon Training in Colorado: How to Adapt to Unpredictable Weather

If you’ve spent even one spring season training in Colorado, you know the deal — snowstorm on Monday, 70° and sunny by Friday, and somewhere in between a few surprise wind gusts that feel like you’re cycling through a wind tunnel. Spring triathlon training here isn’t for the faint of heart, but with the right mindset and preparation, you can thrive through the chaos and show up to your first race of the season dialed in.

Navigating Spring Snow, Wind, and Warm Days (All in the Same Week)

Colorado's springtime is notorious for variety. It’s common to start a ride in a puffy jacket and finish in a sleeveless jersey. The key? Flexibility and preparation.

• Check the forecast hourly, not just daily. Spring weather shifts fast.

• Have an "always-ready" kit in your car or training bag — gloves, arm warmers, wind vest, beanie, extra socks, and a rain jacket.

• Plan for route changes on the fly. Trail runs may turn into road runs if the snow melts into mud.

• Know when to call it. There's no shame in swapping an outdoor session for an indoor alternative when safety is questionable.

Layering Advice for Running and Cycling

Layering isn’t just a suggestion — it’s survival.

• Base Layer: Moisture-wicking and tight-fitting to keep you dry.

• Mid Layer: Insulation (light fleece or thermal top) for cooler mornings.

• Outer Layer: Windproof and water-resistant jacket or vest. Bonus if it’s packable.

• For cycling, thermal bibs and toe covers go a long way.

• For running, gloves and a headband can make a huge difference in comfort without overheating.

Tip: Colorado winds are no joke. Opt for tight-fitting clothing to reduce wind drag and flapping layers.

Open Water Swimming as Lakes Begin to Thaw

Around late April into May, Front Range lakes start to open, but water temps can still be in the 50s or low 60s.

• Use a full-sleeve wetsuit (required at most early-season events anyway).

• Practice cold-water swims gradually. Start with short dips to acclimate.

• Don’t forget: Neoprene caps, gloves, and booties are allowed in training even if not allowed on race day.

• Be aware of lake opening dates, and always check for posted water temperatures and safety guidelines.

• When in doubt, buddy up for open water swims, especially early season.

Indoor Training Alternatives When the Weather Turns

You can still get quality work done when Mother Nature isn’t cooperating.

• Smart trainers + Zwift can replace outdoor rides effectively.

• Treadmills are underrated for brick workouts or short threshold runs.

• Local indoor pools are often less crowded in the spring compared to summer.

• Consider group spin classes, strength training, or even mobility sessions when outdoor conditions just aren't worth the risk.

Spring in Colorado keeps you guessing, but that’s part of the fun. Embrace it, plan ahead, and you’ll come out the other side stronger and ready for the summer season.