Dreaming3D · Sports & Additive Manufacturing
How Runners & Swimmers Are Using 3D Printing
Two sports, one technology. From lattice midsoles built strut-by-strut to goggles scanned to the millimeter of your face — additive manufacturing is quietly reshaping how endurance athletes train, race, and recover.
Endurance sport has always been an arms race over marginal gains — a slightly lighter shoe, a goggle that doesn't leak on the third lap, an insole that keeps a nagging arch quiet through mile 20. For decades those gains came from mass-produced gear and a lot of compromise. 3D printing changes the math. Instead of choosing the closest size off a shelf, athletes can now get equipment shaped to their own body and their own data.
At Dreaming3D, we sit at the intersection of that shift here in San Diego — a city full of runners, ocean swimmers, and triathletes. Here's a clear-eyed look at how both camps are putting additive manufacturing to work, and where a local print shop fits into the picture.
On the Run
// The track, the trail, the pavementLattice midsoles that redirect your impact
The most visible example lives under your feet. adidas 4DFWD, built on Carbon's Digital Light Synthesis process, uses a single printed midsole made of more than 10,000 individual struts. The proprietary lattice translates vertical impact forces from a runner's downward step into forward momentum. Denser lattice means support; looser lattice means cushioning — and because it's all one print, designers can tune stiffness zone-by-zone in ways foam molding simply can't reach.
The lineage runs deep. adidas kicked off its 3D-printing journey with the Futurecraft 3D in 2016, featuring printed midsoles tailored to a user's foot pressure zones, then followed with the Futurecraft 4D in 2017, where the entire midsole was lab-printed using data-driven lattice structures. The latest chapter is the ClimaCool family — with 2026 prototypes like the FutureCool and FutureCraft X expanding the printed-footwear line further.
"We have examined 17 years of athlete data and over 5 million lattice variations to create a 3D printed performance midsole, coded to move forward with every stride."
Custom insoles tuned to your gait
You don't need a flagship sneaker to feel the benefit. The bigger everyday story for runners is custom orthotics. The workflow is elegant: a 3D scan or pressure plate captures how your foot actually loads while moving, and that data drives a printed insole with corrections baked directly into its structure.
Materialise's Phits insoles, for example, are designed from a patient's dynamic gait analysis and described as the preferred choice for thousands of runners worldwide. The case for additive here is concrete: 3D printing produces lightweight orthotics with an accuracy of 0.1 mm and lets corrections be built intrinsically into the part rather than glued on as bulky add-ons.
Speed is the quiet revolution. New clinical systems now integrate scanning, gait analysis, and multi-material printing to produce a fully personalized insole in roughly 35 minutes — versus the weeks traditional lab methods can take. Faster turnaround means more iteration, which means a better-fitting final product.
Turning your miles into something you can hold
Not every running application is about performance. One of our favorites is Strava route art: the GPS track of a marathon, an epic trail loop, or a year of dawn runs, turned into a physical printed keepsake. It's become a go-to finisher gift and race memento — proof that the data you've been collecting on your wrist can become an object on your shelf.
Got a route worth remembering?
Dreaming3D turns your Strava run, ride, or swim into a custom 3D printed plaque or desk piece — and we print custom sports accessories on demand.
In the Water
// The pool, the open water, the deckGoggles scanned to your face
Every swimmer knows the ritual: cinch the strap tighter to stop a leak, then peel off goggles that have left red rings around your eyes. 3D printing attacks the root cause — fit. Brands like TheMagic5 use 3D face-scan technology to build goggles tailored to each swimmer's facial structure for a leak-resistant, secure seal.
The research backs the approach. A formal design protocol uses a swimmer's 3D facial scan data to produce customized goggles, because leakage occurs when standard goggles don't match the face well enough to form an effective seal. Overtightening the strap to compensate just trades leaks for discomfort.
"Within the usual five-week period for one handmade sample, with 3D printing we can do a number of different iterations and really refine the product so that the comfort and fit is optimum."
— Speedo design team, on prototyping goggles with multi-material 3D printing
Earplugs, nose clips, and the small stuff that ruins a session
Some of the highest-value prints are also the smallest. Custom earplugs reduce pressure points and discomfort over long training sessions, and printing them in hypoallergenic materials lowers the risk of allergic reactions. Lost a strap clasp or snapped a nose bridge the morning of a meet? Those are exactly the parts the maker community has solved — replacement clasps, strap adjustment clips, and goggle nose pieces are among the most-printed swim accessories out there.
Training gear, customized
Beyond fit, 3D printing lets specialized training equipment like paddles and kickboards be customized to an athlete's specific needs and goals, helping swimmers improve technique and power more effectively. Hand paddles in particular are a natural fit: they can be sized to your own hand and printed with different hole patterns to dial in stroke technique and finger placement.
Anything touching skin or going in your mouth or ears should be made from a body-safe material and post-processed properly. For wet, chlorinated environments we recommend durable washable resins or TPU, printed solid and fully cured. When in doubt, ask us which material suits the job — it's the difference between gear that lasts a season and gear that fails on lap two.
Runner vs. Swimmer: Where 3D Printing Pays Off
The two sports lean on additive manufacturing for different reasons. Here's how the applications stack up:
| Application | Runners | Swimmers | Best Process |
|---|---|---|---|
| Custom fit | Gait-tuned insoles & orthotics | Face-scanned goggles & earplugs | Scan + FDM (TPU) or resin |
| Performance gear | Lattice midsoles (industrial DLS) | Hand paddles, kickboard fins | Industrial resin / FDM |
| Repairs & spares | Race-belt clips, bib holders | Strap clasps, nose bridges | FDM (PETG / nylon) |
| Keepsakes | Strava route art, medals | Open-water route plaques | FDM or resin |
| Key benefit | Energy return & injury prevention | Seal, comfort & drag reduction | Personalization |
Where a Local Print Shop Fits In
You can't print an adidas 4DFWD midsole at home — that takes industrial resin systems and proprietary materials. But an enormous slice of athlete gear is well within reach of a capable local shop, and that's exactly the gap Dreaming3D fills for San Diego runners and swimmers:
- 3D scanning with our Revopoint MetroY to capture geometry for custom-fit accessories and replacement parts.
- FDM & resin printing on demand — TPU paddles and insole shells, washable-resin clips, PETG hardware — printed on production machines.
- Strava route art turning your most meaningful effort into a physical piece.
- Custom sports accessories sized and tuned to you rather than the shelf.
- Tutoring & printer service if you'd rather make your own gear and need a hand getting there.
3D printing won't replace your favorite race shoes overnight. But for fit, for repairs, for training tools, and for celebrating the work you've put in, it puts a level of personalization in your hands that mass production never could. The athletes already using it aren't waiting for permission — they're scanning, printing, and iterating.
Build your gear with Dreaming3D
Custom-fit accessories, route art, repairs, and on-demand printing for San Diego's endurance community. Tell us what you're chasing and we'll print it.
Frequently Asked Questions
Can a hobby 3D printer actually make useful running and swimming gear?
Yes. Performance midsoles need industrial resin systems, but a huge range of athlete gear — insole shells, hand paddles, nose clips, goggle strap clips, kickboard fins, race-belt hardware, and bag tags — prints cleanly on consumer FDM and resin machines using TPU, PETG, nylon, and washable resins.
Are 3D printed swim goggles waterproof and safe for the pool?
Custom goggles from brands like TheMagic5 are produced from skin-safe materials and sealed against leaks. For DIY work, durable washable resins and TPU hold up well to chlorine and salt water when printed solid and post-cured properly. We always recommend body-safe materials for anything touching skin.
How are 3D printed insoles for runners made?
A 3D scan or pressure-plate gait analysis captures the foot's geometry and load pattern. That data drives a CAD model where arch support, heel cradle, and lattice stiffness are tuned per zone, then printed in flexible TPU or specialized resin — often in under an hour with modern clinical workflows.
What is Strava route art and can you 3D print it?
Strava route art turns the GPS track of a meaningful run, ride, or swim into a physical keepsake. Dreaming3D converts your route into a clean 3D printed plaque, ornament, or desk piece — a popular finisher gift or race memento.
Does Dreaming3D do 3D scanning for custom-fit gear?
Yes. We run a Revopoint MetroY scanner and can capture geometry for custom-fit accessories, replacement parts, and personalized sports gear, then print in the right material for the job.
How much does a custom 3D printed sports accessory cost?
Small accessories like nose clips, strap buckles, or paddles are inexpensive and quick. Scanned, custom-fit items and route-art pieces vary by size, material, and design time. Send us the details for a quote at dreaming3dprinting@gmail.com or 858-342-6984.