SuCalc
Health & Fitness

Cycling Route Power & Time Planner

Updated Aug 27, 2026 Reviewed Aug 27, 2026
Plan up to twelve cycling route segments with distance, grade, target power, wind and rolling resistance to estimate speed, time, work and elevation.

Route-by-route power planning

Break the course into steady segments

Segment 1
Segment 2
Segment 3
Steady-segment estimate
Each row assumes constant grade, power, surface and wind. Corners, braking, traffic, drafting, fatigue and changing weather are not modeled.

Result

Calculation summary

Enter values to see the result

Your result, breakdown, assumptions, and warnings will appear here.

Live route preview

Power targets across changing terrain

Elapsed time

1:08:30

Moving average

28.3 km/h

Elevation gain

479 m

Every segment is solved independently, then time, work and elevation are added into one route plan.

How to use this calculator

  1. 1Set rider, bike, units and shared aerodynamic assumptions.
  2. 2Add each route section with distance, grade, target power, wind and rolling resistance.
  3. 3Review segment and route totals.

Formula

Pwheel = (mg sinθ + Crr mg cosθ + ½ρCdA(v + wind)²) × v

The calculator solves steady speed for each segment and sums time, elevation and work.

Calculation steps

  • Convert inputs to SI units.
  • Solve the force balance for each segment.
  • Aggregate moving time and add stopped time.

Worked example

A flat start, 6% climb and descent produce separate speed targets and a total elapsed time.

Assumptions

  • Each segment is constant.
  • Acceleration, drafting and fatigue are omitted.
  • Headwind is positive and tailwind negative.
  • Average power is arithmetic, not normalized power.

Sources

Frequently asked questions

Is this a GPS importer?

No; visible manual segments keep assumptions auditable.

Why can outdoor time differ?

Real rides include turns, traffic, changing weather, drafting and fatigue.

Can surfaces differ?

Yes; set rolling resistance per segment.

Is reported power normalized power?

No; it is time-weighted arithmetic power.

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