Cycling Cadence: rpm, Gear Ratios and What the Numbers Mean

Cadence is the number of pedal revolutions per minute. It is not a virtue in itself — it is a variable you trade against force. Too low and each stroke loads the knee; too high and you spend energy lifting your own legs.

Cadence by terrain

Terrain	Target cadence_rpm
Steep climb, loaded	55–70
Rolling hills	70–85
Flat, steady	80–95
Flat, group ride	90–100
Sprint	100–120
Descent, coasting	0 or easy spin

There is no single correct number. A rider climbing at 60 rpm in a 34×32 is doing the same work as one climbing at 80 rpm in a 34×36, with more force per stroke and less cardiovascular load.

Gear ratio decides what cadence is possible

Setup	Lowest ratio	Cadence at 8 km/h
50/34 with 11–28	1.21	~44 rpm
50/34 with 11–34	1.00	~52 rpm
46/30 with 11–36	0.83	~63 rpm
40T 1× with 10–44	0.91	~58 rpm
30T 1× with 10–51	0.59	~89 rpm

Gear ratio is chainring teeth divided by sprocket teeth. A ratio of 0.83 means one pedal revolution moves the bike less than one wheel circumference — that is what allows a high cadence on a steep gradient. If you cannot hold 70 rpm on your local climb, the fix is usually a smaller chainring, not more fitness.

Self-selected cadence

Rider type	Natural cadence
Recreational	65–75 rpm
Regular	75–85 rpm
Racers	85–95 rpm
Track, criterium	95–110 rpm

Most riders self-select a cadence below what is efficient for long steady efforts, because low cadence feels easier for the first 20 minutes. The cost appears at hour two, as muscular fatigue rather than breathlessness.

A useful test: ride 10 minutes at your natural cadence, then 10 minutes at 10 rpm above it, same heart rate. Most riders find the higher cadence sustainable for longer, even though it feels less natural at first.

Drills

Drill	Duration	Purpose
High-cadence spin-ups	30 s × 6, 100–120 rpm	Neuromuscular smoothness
Single-leg pedalling	30 s each leg × 4	Removes dead spot
Big-gear low cadence	3 min × 3 at 50–60 rpm	Strength, seated
Cadence ladder	1 min each at 70/80/90/100	Range control

Keep drills short. Spin-ups of 30 seconds at 110–120 rpm build coordination; longer than a minute and the point is lost to bouncing in the saddle. Big-gear work is the opposite: 3 minutes at 50–60 rpm builds force, and it is hard on the knees if introduced too early.

Efficiency

Cadence	Efficiency	Cost
50–60 rpm	High at low power	Knee load, muscular fatigue
70–80 rpm	Best for most riders	—
85–95 rpm	Best at high power	Cardiovascular load
100 rpm+	Slightly lower	Energy spent moving legs

Efficiency differences between 70 and 90 rpm are small — often under 2% in laboratory conditions. The practical difference is fatigue location: low cadence loads muscles, high cadence loads the heart and lungs. Riders with strong legs and limited aerobic capacity often prefer lower cadence; the reverse for lighter riders.

How to change your cadence

Change one thing at a time: shift one gear easier and hold the same speed. Cadence rises by roughly 10 rpm per single sprocket on the rear cassette at typical speeds.

Expect two to three weeks for a new cadence to feel normal. Do not change position, gearing and cadence in the same week — you will not know which change caused the improvement or the knee pain.

Cadence on climbs versus the flat

Terrain cadence is not the same problem in both directions. On climbs, the limit is force: a 10% grade at 70 rpm in a 34×32 demands roughly double the pedal force of the same speed on the flat, which is why riders stand or fit a smaller chainring.

On flats, the limit is oxygen. Wind resistance rises with the square of speed, and at 30 km/h holding 90 rpm in a bigger gear is an aerobic question, not a strength one. This is why climbers spin and sprinters push, and why the same rider uses different cadences on the same bike.

Where to go next

• Cadence training — structured sessions
• Power meters — measuring the output behind cadence
• Training plans — where cadence work fits