The Sunscreen and Sun Protection Mistake Most Paddlers Make on Long Water Trips
The afternoon before my best friend Michael Whalen and I finally launched on our five-day paddleboard circumnavigation of Lake Tahoe, we bought SPF 100 sunscreen, a product strength neither of us had ever actually seen or heard of before that specific afternoon. That last-minute, almost incidental purchase turned out to matter more in practice than almost any other single item on our entire gear list combined. Here's the specific mistake most paddlers tend to make with sun protection on long water trips, and what actually holds up reliably and consistently across multiple consecutive days of real, sustained exposure.
Why Open Water Sun Exposure Is Different
Paddling across open water means constant, direct sun exposure for hours at a time, made worse by reflection off the water's surface that adds effective exposure beyond what the sun alone would provide on land. A day of hiking might involve stretches of shade from trees or terrain. A day of paddling across Lake Tahoe offers almost none of that, particularly on the more open crossings where shoreline features that might otherwise block sun are simply too far away to matter.
The Mistake: Treating Sun Protection Like a Single-Day Plan
Most sun protection habits are built around single-day exposure, one application in the morning, maybe a reapplication at midday if you remember. That approach breaks down across a multi-day trip where the cumulative exposure compounds day after day, and where sweat, water contact, and the sheer duration of daily exposure wear through standard sunscreen faster than a typical day at the beach would.
What We Actually Needed to Reapply
Even with SPF 100, we found ourselves reapplying more frequently than either of us initially planned for, particularly on our longest mileage days when we were on the water for six or seven hours at a stretch. Water contact, whether from splash spray coming off the board or from actually swimming during rest breaks, degrades sunscreen's effectiveness noticeably faster than sweat alone tends to do on a typical dry-land outdoor activity, which means the reapplication schedule that works for hiking or general outdoor activity isn't aggressive enough for a multi-day water trip.
What Else Matters Beyond Sunscreen Alone
Sun protection on a trip like this isn't just about sunscreen. Clothing that covers more skin, particularly on the most exposed crossing days, reduces how much sunscreen you actually need to rely on and provides more consistent protection than any topical product alone. A hat that offers real, meaningful coverage, not just a simple cap, protects your face, ears, and neck in a way that's easy to forget matters until you're dealing with sunburn on day three with two more days still ahead of you.
What Happens When You Get This Wrong
Sunburn on day one or two of a five-day trip doesn't just hurt, it compounds every subsequent day of continued exposure, turning what should be a manageable discomfort into a genuine problem that affects your ability to paddle comfortably for the remainder of the trip. We got lucky by catching the SPF 100 the day before departure rather than discovering the gap in our planning once we were already a day or two into the route with no easy way to fully correct it.
What I'd Recommend for Anyone Planning a Similar Trip
Buy sun protection specifically rated for extended water exposure, not just general daily use. Plan reapplication on a schedule tied to hours of exposure rather than simply remembering when convenient. And bring more coverage-focused clothing than you might for a typical single-day outdoor activity, since the cumulative nature of a multi-day water trip changes the math on how much any single layer of protection needs to carry.
What We Learned About Timing Reapplication Around Paddling Breaks
Rather than trying to remember reapplication on a strict clock-based schedule, we found it worked better to tie sunscreen application to natural breaks in our paddling, any stop for food, water, or rest became an automatic cue to reapply, regardless of exactly how much time had passed since the last application. That habit-based approach proved more reliable across a demanding, exhausting trip than trying to track exact hours, since fatigue makes precise time-tracking harder than it sounds when you're also managing navigation, conditions, and physical effort.
Why Sun Protection Deserves the Same Planning Rigor as Water or Food
It's easy to treat sun protection as a minor detail compared to more obviously critical logistics like water, food, or navigation, but the cumulative effect of getting this wrong on a multi-day trip can genuinely compromise your ability to complete the route comfortably. We came to think of sun protection with the same seriousness we applied to our water and fuel planning, building it into our daily routine and our resupply thinking rather than treating it as an afterthought that only mattered if we happened to remember.
What I'd Tell a Brand Considering Sun Protection Product Partnerships
Sun protection is not usually the first thing that comes to mind for outdoor brand partnerships, but given how central it turned out to be for a trip like this, there's a clear opportunity for outdoor and sun care brands to sponsor projects specifically built around extended water exposure, since the real-world testing an expedition like ours provides is difficult to replicate in any controlled setting. A product that performs well across five consecutive days of open water paddling has demonstrated something that a single-day photo shoot simply can't prove. That kind of extended, real-world validation is exactly the case study material that turns a product claim into something an audience can actually trust, built from genuine field conditions rather than a controlled studio environment designed to flatter the product. It's the difference between a brand telling people their product works and an audience watching real proof unfold across five demanding days on open water, which is exactly the kind of credibility that scripted content struggles to replicate no matter how well produced it is, and it's part of why brands willing to back real, unscripted expeditions tend to end up with material that outperforms more polished alternatives over the long run, both in engagement and in genuine audience trust.
Before You Close This Tab
What sun protection has actually held up across multiple full days of continuous exposure on open water, based on your own real experience?
How would you build a reapplication schedule for a multi-day trip rather than relying on remembering when convenient?
Would more coverage-focused clothing change how much you need to rely on sunscreen alone?
Have you ever underestimated cumulative sun exposure the way we nearly did before this trip?
Dalton Johnson is a photographer, filmmaker, and brand storyteller based in South Lake Tahoe, California. Over the past decade he has worked with brands including Patagonia, GoPro, Arc'teryx, Four Seasons, Nike, Rivian, and Ford Bronco across all seven continents. He is the creator of the Follow The Journey distribution framework, which has produced over one million organic views per 30-day cycle without paid media. His work includes two published books, an award-winning documentary that aired on PBS, and more than fifty commercial spots directed. He runs Stories by Dalton on Substack, read by more than 34,000 subscribers.