I found a handy dandy exercise conversion chart. Now that I've been recreationally bicycling and paddling it's good to know how those activities compare to the exercise of walking.
According to the chart, for bicycling on a road or paved trail you take the distance you cycled and multiply that by .3 to convert it to miles walked. For example, this morning I bicycled 10 miles, so that equates to 3 miles walked. To put that into minutes, in my case it takes me about 5 minutes to bicycle a mile which averages out to 12mph. To "walk" 3 miles on a bike means cycling for 10 miles which would take me about 50 minutes.
For canoeing/kayaking (moderate) - and I'll add stand up paddle boarding to that - you take the hours paddling and multiply that by 2.0 to convert it to miles walked. By that standard, to paddle the equivalent of walking three miles or cycling 10 miles you would need to paddle for 1.5 hours. So 90 minutes paddling equals 50 minutes pedaling! See how I did that!?
I'm not a jogger, but interestingly one mile jogged is about the same amount of exercise as one mile walked. Of course, when you're running you're going faster than walking so if you only have 30 minutes to walk 1.5 miles or run three miles you're going to get more exercise running the full 30 minutes. But if all you're trying to do is get from point A to point B and those two points are three miles apart you're going to get approximately the same exercise whether you walk or run. You'll just get there faster by running!
I also have a mini-trampoline or rebounder at home. It's not on the conversion chart, but according to some stats I found online I feel at liberty to say that 11 minutes on the rebounder is the equivalent of walking one mile. Therefore, 22 minutes equals 2 miles and 3 miles would be 33 minutes on the rebounder.
I also do slide board! I don't really have many stats for slide board, but based on the little that I have seen it seems like about 9 minutes on the slide board equals one mile walking.
2.5 miles walked = 8.33 miles bicycle, 75 minutes SUP, 27.5 minutes rebounder, and 22 minutes slide board.
2 miles walked = 6.66 miles bicycle, one hour SUP, 22 minutes rebounder, and 18 minutes slide board.