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Race Your Fastest Bike Split with Physics-Based Cycling and Triathlon Pacing Plans

Best Bike Split uses physics-based modeling, real course data, weather, and your personal power profile to show exactly how fast you can ride and how to achieve it. Start your free race plan today!

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Lotto-Intermarche

"Best Bike Split allows Lotto-Intermarché to translate course data, power numbers, and race conditions into clear, actionable pacing strategies."

— Aike Visbeek, Head of Performance

What can Best Bike Split do for you?

  • Know your predicted finish time before race day
  • Get precise power targets to achieve your goal result
  • Train the exact demands of your course indoors or outdoors
  • Execute with real-time power guidance on your bike computer
  • Choose the fastest equipment, pacing, and race strategy
  • See how fitness, drag, weight, and weather change outcomes
  • Avoid blowing up with pacing matched exactly to your limits
  • Learn from real ride data to continuously improve performance
  • Plan smarter using physics-based modeling trusted by pros
  • Race with total confidence from start line to finish
Our math and physics engine takes your power data, course info, and race day conditions to predict your race performance and create the perfect power plan.
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Input Your Data

Set up an athlete profile with data like weight, height, FTP, MaxHR, bike type, wheel type and components to name a few. Then select an existing course or create a new course to ride.

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Create Race Profile

With your data we calculate CdA, rolling resistance and mechanical loss. Mix in your course's distance, altitude changes, wind direction, several 1000 more variables and we're ready.

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Get Power Plan

Using our math and physics engine we will output the best possible power based plan to allow you to have the fastest bike split possible given the course conditions and any power limitations.

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Best Bike Split FAQ

Best Bike Split is a physics-based cycling and triathlon race planning tool used by over 150,000 athletes and coaches worldwide. It uses your power data, real course files, weather forecasts, and aerodynamic modeling to calculate your optimal variable power pacing plan — so you can predict your bike split and execute the perfect race day strategy.

Best Bike Split's math and physics engine models the forces acting on a rider — aerodynamic drag, rolling resistance, gravity, and wind — for every segment of your course. It combines your FTP, bike profile (CdA and weight), real course elevation data, and forecasted weather conditions to calculate the most efficient variable power output for your target finish time. The result is a personalized pacing plan, not a generic percentage of FTP.

Yes — Ironman racing is one of Best Bike Split's core use cases. Our database includes the vast majority of Ironman-branded courses worldwide, from Kona and Frankfurt to local regional events. The platform models the full 112-mile bike leg accounting for course profile, wind, heat, and your personal power data to help you arrive at T2 with the legs to run your best marathon.

A power meter is strongly recommended for race day execution, but it is not required to create a plan. Best Bike Split can build plans using estimated power data, and our Wahoo ELEMNT / Garmin integration allows you to follow your power and speed targets in real time on your head unit. For athletes racing without a power meter, speed-based targets are also available.

Yes — Best Bike Split offers a free plan that includes one race plan, one bike profile, basic analytics, and file downloads. No credit card is required to get started. Premium plans unlock unlimited race plans, the AI Workout Builder, AI Assistant, advanced weather modeling, and full analytics tools starting at $10/month billed annually.

Yes. Best Bike Split offers dedicated coaching subscriptions that allow coaches to create and manage athlete profiles, build race plans on their athletes' behalf, and share pacing strategies — all from one account. The Coach Annual plan supports unlimited athletes, while the Athlete Plus plan is designed for athletes who also coach a small number of paid athletes.

When power data, course information, and weather inputs are accurate, Best Bike Split's physics-based model typically predicts bike split times within 2–3%. Our predictions are validated every season by thousands of athletes at Ironman events, triathlons, and gran fondos worldwide — and by our work with WorldTour professional cycling teams including EF Pro Cycling, Lidl-Trek, and Canyon//SRAM Racing.

Yes. Best Bike Split integrates with Wahoo ELEMNT devices to display your power and speed targets in real time along the course on race day. For Garmin devices, BBS exports Power Courses and TCX Power Routes compatible with Garmin Edge head units. Workout sync is also available to TrainingPeaks, Zwift, and Garmin Connect.

Trusted by Top Teams, Pros and Coaches Around the World

CANYON//SRAM Racing partners with Best Bike Split
Team Jayco AlUla recommends power pacing
Lotto Intermarche uses power plans
EF Pro Cycling plans, trains and races with Best Bike Split
Human Powered Health coaches with Best Bike Split
Lidl Trek uses Best Bike Split to win
Confidis is a partner of Best Bike Split