My short rides are about 10 miles... I typically ride a 3-speed for those. My longest one day ride while riding a fully loaded touring bike was about 112 miles as I recall. Fastest speed I had a cyclometer for while touring was about 45 mph in the Rockies. Those longest / fastest cases both were kind of nuts! LOLmy bike riding is all about perseverance, too! not distance - me! lol.... i ride in lieu of jogging. was a lifer, of sorts. 13 miles is the farthest i ever ran at one time. several times. taking it ez on my bod of late. got into biking as an adult bit by chance. worked for me. i had a 10-speed english racer as a kid over in the UK. i go 5 to simulate a 3 mile run. then i read more so takes 2-3 bike miles to = one foot mile. so i up't it to 6. maybe i should go 9. sometimes i do. but my new normal is 6. despite the heavy winds yesterday it was 6. i have a speedo center on it... works good.
fastest i have gone is 18 i think it was. wind to my back. warm weather. other day i got into it. 15 was my max. no winds. yesterday, even bundled up i thot... wth - and did a bit of a sprint using the winds from one area of my route very windy. hit 13 by first curve and then up to 16..17.. 18... 18 and some change. that was it. but i had not hit the 2nd section (1/4 mile) and it sloped down. mite have hit 20... but i was done. lol......
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I agree that a ratio of 1:3 is probably about right if in fact you are peddling the whole time. If you are coasting and lollygagging up it to 1:5.