Just another data point-

I've used Coleman Peak 1 stoves for backpacking and jeep camping.

One year I was curious about how long the stoves (I had 2 at the time) would run. So one winter day I filled them up and ran them full blast.

Both lasted 45 minutes on full output.

Note that there is inefficiency in the startup/warmup phase so for actual use with several start/stop cycles on that tank of fuel one wouldn't get 45 minutes output.

I use pre-heating paste to soften the startup flares an minimize warmup time.