How fit should you be at 50?

Age charts put a typical 50-year-old between 2.9 and 3.6 watts per kilo. Every one of them measures you fresh.

2.53.03.54.0Benchmark 2: 2.9Benchmark 1: 3.6watts per kilo

Median FTP, men around 50, from two large benchmarks.

What the age charts say

The median drops a little more each decade.

4.3030–394.0040–49−7%3.6350–59−9%3.2360+−11%

Median FTP, men, Benchmark 1. Different riders in each age band.

Nobody races fresh.

So I looked at my own riders

Drop-off: how much of your best 20 minutes is gone after 1,000, 1,500 or 2,000 kJ of work in the same ride.

  1. SEMIPRO athletes

    85

  2. Usable data

    12 months of rides

    36

  3. Drop-off at 1,000 kJ

    3+ rides past 1,000 kJ

    32

  4. Drop-off at 2,000 kJ

    3+ rides past 2,000 kJ

    18

5,257 rides over 12 months. Same rules for every rider.

Everyone drops off

Each line is one rider. Red is the median.

100%90%80%70%60%50%Power left (% of best)Fresh1,000 kJ1,500 kJ2,000 kJ−8.9%

Median drop-off

8.9%

32 riders.

Does age matter?

A little, maybe. Older riders lean towards more drop-off past 2,000 kJ, but it doesn’t hold up to a fair test.

Rider A · 56 · 6.5 h a week

1.6%

Riding since 2019

Rider B · 55 · 7.5 h a week

20.3%

Riding since 2023

20-minute drop-off after 1,000 kJ. Both checked hard by heart rate, both with 50+ long rides.

Same age. Very different riders.

The Two-Number Age Test

Your FTP against your age. Your drop-off against my riders.

Number one: your FTP
Number two: your drop-off

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Low drop-offunder 8.9%

Durable, underpowered

Add quality intensity and strength.

Ahead of your age

Protect what got you there.

High drop-off8.9% or more

Earlier in the build

Consistency and time come first.

Fit on paper

Make durability the priority.

Lower FTPbelow the median for your age
Strong FTPat or above the median

A coach looking at real training files, not a lab study. 17 to 33 riders depending on the measure, mostly men in their 40s to 60s. The 8.9% line is the SEMIPRO median, not a published standard.