Kliva turns any of 31,000+ trail and ultra races into a race-day plan: pacing per segment on the real terrain, fueling with the actual gels and drink mixes you carry, caffeine and sodium dosed to your body, and a cutoff margin at every aid station. Then it syncs the plan to your Garmin as a free Connect IQ data field: aid stations, cutoffs and fuel reminders on your wrist, updated over the air. Plus a printable roadbook, a crew sheet link, FIT and CSV export. Free, in five languages.
Hey ProductHunt, Simon here. I'm a trail runner in Switzerland.
The thing that broke me was endless excel sheets to build race plan, and inaccurate plans from the existing race planners. I had the whole day planned on a spreadsheet, where to eat, which cutoffs scared me, and none of it was on my watch. Garmin gives you a line on a map and that's it. So I spent the night before adding waypoints by hand, at the end, that didn't match the plan at all. I remember thinking there is no way this is still a manual job in 2026.
So, Kliva. It started as a calendar because I couldn't find one that had every race, not just the big ones and always had issues finding all information in one place. Right now it's 31k races in 100+ countries, scraped from official sources, deduped, with aid stations ( for some of them, working actively to increase that offer ) and elevation profiles where I could get them (not everywhere yet, tell me what's missing in your country and I'll go fetch it).
Then I bolted the actual planner on top. Pick a race, tell it roughly how you run, and it gives you split times per climb, that's based on tens of thousands of results analyzed, which gel at which km (real products, not grams per hour), caffeine and salt dosed to your weight, and how much margin you have at each cutoff. Three versions of the day, because the plan you make on Tuesday is never the day you get on Saturday.
And then the missing piece: a Garmin data field that shows all of it on the wrist. Next aid station, cutoff margin, on plan or not, and a buzz when it's time to eat. Free, in the Connect IQ store. If you don't want another app, there's a FIT download and the aid stations show up as course points. Support to other brands is coming up soon as well.
Everything is free for now. I'm one person, there's no funding, just pure passion and engineering.
Honest ask: if you run, try it on a race you know and tell me where the pacing is off. And if you have a Garmin, tell me your model and whether the field loads, older watches are tight on memory and I'm chasing that.
User base is already growing well organically, already have a few users tried the plans on ultra trail races, feedback is excellent so far.
Which Vercel product did you use? What new capability did it give your team, and how did that shape the product you launched?
Your changelog mentions rebuilding timing and validating against tens of thousands of finishers with big error reductions. What’s the core pacing model (e.g., grade sensitivity, climb vs descent penalties, fade), and what data did you find mattered most to get from “reasonable” to “trustworthy” on real trail courses?
About Kliva on Product Hunt
“Trail race plans that sync to your Garmin”
Kliva launched on Product Hunt on September 25th, 2026 and earned 63 upvotes and 3 comments, placing #37 on the daily leaderboard. Kliva turns any of 31,000+ trail and ultra races into a race-day plan: pacing per segment on the real terrain, fueling with the actual gels and drink mixes you carry, caffeine and sodium dosed to your body, and a cutoff margin at every aid station. Then it syncs the plan to your Garmin as a free Connect IQ data field: aid stations, cutoffs and fuel reminders on your wrist, updated over the air. Plus a printable roadbook, a crew sheet link, FIT and CSV export. Free, in five languages.
Kliva was featured in Health & Fitness (83.3k followers), Sports (11.4k followers), Running (609 followers) and Vercel Day (40 followers) on Product Hunt. Together, these topics include over 38.8k products, making this a competitive space to launch in.
Who hunted Kliva?
Kliva was hunted by Simon Busch. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Kliva stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Simon Busch