Sync your watch or import your activity files: Sleipnir analyses your runs, rides, ski, hiking and swimming sessions, tracks your fitness season after season and maps the ground you have covered.
Built for endurance athletes who want to understand their training.
Account in 2 minutes, no credit card · Read-only demo, no account needed
Every seat is taken for now · The demo stays open, no account needed
Set your goal race: Sleipnir checks that it is achievable, builds a plan that fits your availability and readjusts it every week based on your actual fitness. Every piece of advice is explained, never a black box.
PremiumThe adaptive race plan will join the premium plan after the beta.
Every col you climb joins your collection automatically. And if you ride with a power meter, your tracking moves up a level: FTP, normalised power, training load.
PremiumYour col collection stays free; power analysis will join the premium plan after the beta.
SWOLF, session summary, breakdown by stroke: every pool session is analysed in detail, based on the data your watch provides.
PremiumAnalysis of each session stays free; your progress over several months will join the premium plan after the beta.
Training load, injury risk, sleep and recovery combined into a daily fitness ring, updated with every session.
Every col and every summit you climb is detected automatically and joins your collection. Recurring segments that name themselves, a personal heatmap. And in cross-country skiing, track the completion of your Nordic ski area, season after season.
PremiumDetection, collection and your first ski area are free; the heatmap, detailed pages and unlimited ski areas will join the premium plan after the beta.
Every activity conquers tiles — the grid of 1.73 km squares at our latitudes shared by VeloViewer, Statshunters and Squadrats — and ticks off the municipalities you cross. Three figures come out of it: the number of tiles, the largest filled square and the largest connected cluster. And département by département, Sleipnir tells you how many municipalities you have left to visit.
PremiumTiles, the largest square and exploration badges stay free; municipalities crossed and completion by département will join the premium plan after the beta.
Friends feed, reactions with the emoji of your choice 💪🔥😃, private challenges between friends, trophies, a shareable season recap. Your motivation comes from your circle.
Export your entire account whenever you like, protect your sensitive places with privacy zones, and keep your whole history even if you change watches. No ads, no data resale.
Link your watch or import your activity files.
Intervals, cols, segments, load, records, tiles and municipalities crossed: everything is detected and computed automatically, down to SWOLF in swimming and climbing speed when hiking.
Track your fitness, take on challenges with friends and aim for your next race.
Before you even open an account, you can read what Sleipnir produces: every side of a col with its distance, elevation gain, kilometre-by-kilometre gradient and coloured profile — plus the difficulty index served with its formula, the climbing time by level and the GPX track. These pages are in French.
Polar
AvailableAutomatic, near real-time sync: your session is analysed before you have finished stretching.
Garmin
AvailableLink your Garmin Connect account: every session arrives on its own after your watch syncs, with your sleep, HRV and resting heart rate.
File import
AvailableWhatever your watch, import your FIT, GPX or TCX files — and your full Polar or Garmin history in one go, from your account's export archive.
Coros
Coming soonAutomatic sync planned, training load included. In the meantime, import your FIT files.
Leave your email and we'll let you know as soon as its automatic sync is ready.
Sleipnir is in beta: every feature is free, with no credit card. The product moves fast and your feedback shapes it — which is exactly why the number of seats is limited: every piece of feedback is read and acted on, which only holds at a small scale.
Seats open in tiers. When they are all taken, the waiting list takes over.
After the beta, the essentials will stay free: sync, analysis of your activities, fitness ring, records, calendar, seasonal goals, friends feed, shareable recap, and, always, the full export of your data and your privacy zones.
A premium plan at €7.99 per month — or €59 per year, the equivalent of €4.92 per month and more than four months free — will bring together the bonus exploration and advanced analysis features. Nothing essential will become paid.
Pioneer rate — 100 seats. The first 100 subscribers get the Pioneer rate: €45 for one year, instead of €59, i.e. €3.75 per month. This rate is kept at every annual renewal for as long as the subscription remains active without interruption. A Pioneer badge on your profile. Once the 100 seats are taken, this rate will no longer be offered.
| What you can do | Free | Premium |
|---|---|---|
| Watch sync, file imports, full history | ✓ | ✓ |
| Full export & privacy zones | ✓ | ✓ |
| Complete activity analysis (splits, curves, intervals, SWOLF…) | ✓ | ✓ |
| Fitness ring & injury risk | ✓ | ✓ |
| Records, calendar, seasonal goals | ✓ | ✓ |
| Friends feed, reactions, taking part in challenges | ✓ | ✓ |
| Shareable season recap | ✓ | ✓ |
| Col & summit collection, first ski area | ✓ | ✓ |
| Explored tiles, largest square, exploration badges | ✓ | ✓ |
| Advanced analysis: fitness curve, VO2max, predictions, power, swimming progress | — | ✓ |
| Coach & adaptive race plan | — | ✓ |
| Exploration: heatmap of your tracks, detailed col and summit pages, unlimited ski areas | — | ✓ |
| Territory: municipalities crossed and completion by département | — | ✓ |
| Creating challenges | — | ✓ |
Sleipnir is a web app that works well on your phone. The native mobile app is in preparation.
Join the betaAccount in 2 minutes, no credit card.
Join the waiting listWe'll let you know as soon as a seat opens up.
Leave your email: we'll let you know as soon as a seat opens up or the next tier opens.
Polar and Garmin watches sync automatically: link your account, and every new session arrives on its own — for Garmin, with your sleep, HRV and resting heart rate. Your history imports in one go, from your Polar or Garmin account's export archive ("Export Your Data"). For every other watch, import your FIT, GPX or TCX files. Waiting for Coros, Suunto or Wahoo? Leave your email to be notified.
Yes. During the beta, everything is free, with no credit card. After the beta, the essentials will stay free; a premium plan at €7.99 per month — or €59 per year, the equivalent of €4.92 per month — will bring together the bonus exploration and advanced analysis features. Nothing essential will become paid. The first 100 subscribers will get the Pioneer rate of €45 per year, kept at every renewal.
The first 100 Sleipnir subscribers get a reduced rate: €45 per year instead of €59, kept at every annual renewal for as long as the subscription remains active without interruption. A Pioneer badge appears on your profile. Seats are allocated in order of subscription, and the rate is no longer offered once the 100 seats are taken.
The beta is limited to a set number of seats, so that every piece of feedback is read and acted on. The counter at the top of the page shows the seats still available. When there are none left, leave your email on the waiting list: you will be notified as soon as a seat opens up or the next tier opens.
It stays yours: a full export of your account at any time, privacy zones to hide your sensitive places, no ads, no resale. Your email address is verified at sign-up and is used only for your account — never a newsletter. You can delete your account and leave with your whole history.
Sleipnir is a web app designed for mobile: it is comfortable to use from your phone. The native iOS/Android app is in preparation.
Sleipnir accepts many activity types and distinguishes ten: running, treadmill running, road cycling, mountain biking, indoor cycling, cross-country skiing, alpine skiing, hiking, swimming and everything else. Advanced statistics cover running, cycling, swimming and hiking: adaptive race plan, cycling power, SWOLF in swimming, climbing speed when hiking. And in cross-country skiing, you track the completion of your Nordic ski area. The home trainer and the treadmill have their own sport: a wheel or belt speed is not ground covered, so these sessions neither skew your outdoor averages nor compete for your speed records.
Every activity conquers tiles — the grid of 1.73 km squares at our latitudes shared by VeloViewer, Statshunters and Squadrats — and ticks off the municipalities you crossed. Sleipnir derives three figures from them that reward different things: the number of tiles, the largest filled square and the largest connected cluster. Département by département, it also tells you how many municipalities you have left to visit.
Yes, in two ways. The demo opens a read-only demonstration account, with a whole season of activities already analysed. And the col pages are public: for each col, the climbs derived from the OpenStreetMap road network and a digital elevation model, with the distance, elevation gain, gradient and profile of each climb.