So I decided to do so math on my current 24 speed vs the 10 speed I am looking at for road training.
I used online numbers and and online calculator for gear rations. Then with AI

guidance, calculated in the respective wheel sizes to get the effective ration or “gear inches”.
IF I did this math correctly, the 10 speed has both lower and higher effective gear ratios. What is missing would be the smaller steps between gears. (Again IF I have done this correctly.
Bicycle gear ratio calculations:
GT (confirm)
Crankset Shimano Deore XT, 22/32/42 teeth
Rear Cogs 8-speed, 11 - 30 teeth
Low Gear Ratio: 1.36 x 26 = 35.36”Gear inches”
High Gear Ratio: 3.82 x 26 = 99.32 “Gear inches”
26" wheels
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Trek 10 speed
Bontrager Girona Pro, Tubeless Ready, GR puncture protection, aramid bead, 60 tpi, 700x42mm (27.6”)
Crank Size: M, ML
Shimano CUES FCU60301, 40T ring
Rear cassette Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
Low Gear Ratio: 0.83 x 27.6 = 22.91 “Gear inches”
High Gear Ratio: 3.64 x 27.6 = 100.46 “Gear inches”
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