What multi-sport athletes track in Baseline
Most training platforms assume you do one sport. Strava splits your activities by sport type. Garmin Connect is device-centric. TrainingPeaks assumes you follow a plan for a single goal. Intervals.icu is cycling-first. Baseline was built by a multi-sport athlete for multi-sport athletes - people who run and ride and hike and swim, sometimes all in the same week. If you do more than one sport, your training load model needs to account for all of them together, because your body doesn't care which sport generated the fatigue - fatigue is fatigue. Baseline normalises training stress across every sport you do into a single CTL/ATL/TSB chart, tracks your sport mix over time, and surfaces cross-sport insights that single-sport platforms miss.
Sport-specific KPIs we surface
Combined CTL/ATL/TSB across all sports. Baseline's core differentiator for multi-sport athletes. The platform calculates TSS for every supported sport - running, cycling, swimming, hiking, walking, and more - using sport-specific formulas (power-based for cycling, pace-based for running and swimming, heart-rate-based for others). All TSS accumulates into a single chronic training load, acute training load, and training stress balance chart. You can see at a glance whether your total multi-sport volume is producing fitness or accumulating fatigue.
Sport distribution (percentage by sport). What percentage of your total training time and TSS comes from each sport? Baseline's sport mix donut and trend charts show your distribution by week, month, and year. If you're training for a triathlon but spending 70% of your time on the bike, that's visible. If your run volume is dropping as your hike volume increases, that's a trend you can track and manage.
Cross-training ratio. Baseline tracks the ratio of your primary sport volume to cross-training volume. For athletes who use cross-training deliberately - hikers who run for cardiovascular fitness, runners who bike for low-impact volume, cyclists who swim for upper-body endurance - the cross-training ratio shows whether your mix matches your goals.
Recovery day detection across sports. Baseline detects recovery days regardless of which sport you choose for active recovery. An easy spin on the bike after a hard trail run is still a recovery day, even though it's a different sport. Baseline identifies these patterns and tracks your recovery day frequency and compliance over time.
Cross-sport achievement badges. Baseline's achievement system includes badges specifically for multi-sport athletes: "Sport Switcher" for doing 3+ sports in a week, "True Triathlete" for swim-bike-run in 24 hours, "Adventurer" for hiking and running milestones in the same period, and more. These badges recognise the unique achievement of training across multiple disciplines.
Sport-specific TSS contribution to fatigue. Not all TSS is equal. A 200 TSS bike ride and a 50 TSS swim session produce different fatigue profiles. Baseline breaks down your combined TSB by sport contribution - showing which sport is driving your current fatigue and which sport you can safely add volume to.
Recommended integrations for multi-sport athletes
- Strava: The essential connection. If you record multiple sports, Strava is likely where they all end up. Connect Strava to Baseline for automatic import of every run, ride, swim, hike, walk, and other activity - all classified by sport type and analysed with sport-specific metrics.
- WHOOP: Multi-sport training generates complex fatigue patterns. WHOOP's recovery score, HRV, and sleep data help you distinguish between "good" multi-sport load and overreaching. Connect WHOOP to see your combined CTL/ATL/TSB alongside your recovery trends.
- Apple Health: If you use an Apple Watch for any of your sports, the zip import brings in those activities plus daily health metrics. The combination of Strava for GPS activities and Apple Health for health data gives the most complete multi-sport picture.
- Garmin: Garmin watches are the most popular multi-sport devices. The planned Garmin integration will bring swim CSS, bike power, run dynamics, Body Battery, and Training Readiness into your unified dashboard - covering all three triathlon sports plus hiking and walking in one connection.
Pricing tease
Baseline is free to start. The free tier includes your dashboard with one connected source. Up to Baseline Pro for $12/month (or $249 lifetime) to unlock unlimited integrations across all your sports, AI-powered daily insights that surface cross-sport patterns, combined CTL/ATL/TSB with sport-type breakdowns, sport mix analysis and trends, full-resolution heatmap with all sports overlaid, geographic stats by country and region, trip detection, recovery day tracking, and 50+ achievement badges including multi-sport-specific milestones. No ads, no data sharing, no limit on how many sports you do.