Speaking of carrying a mini pump I noticed no one mentioned any particular brand. A HUGE percentage of mini pumps are virtually useless at pressure exceeding 70 psi even though they claim the can reach 160, maybe they can reach 160 if your name is Superman!
I've tried a lot of mini's and sent them all back except for 2. One was the Topeak Racerocket HP, and the other was the Lezyne Road Drive in the large size. I also have a SKS Raceday Carbon, it's no longer made, that one use to reach 100 psi, but I think the seals may have dried out because it doesn't want to do that anymore, the other SKS models suck.
The Lezyne offers 3 sizes of the Road Drive, knowing what I learned from the all the fails I ordered the largest size, which isn't really that large, however that one out performs the Topeak by requiring less strokes and less effort to get to 100; it weighs a tad more than the Topeak by about 20 or 25 grams, not a big deal. I would not waste my money buying the smaller sizes of the Lezyne Road Drive models, as the size decreases your effort and number of strokes will increase, and I doubt, though admittedly not sure since I didn't bother to try it, that the small Lezyne Road Drive would even reach 100 psi, and if it did you would be very tired afterwards.
It's worth the money to spend a bit more and get a pump that will reach the PSI to stay on your ride so you don't have to turn around and go home. But don't go off thinking that spend a bunch of money on a pump like the Silca Pocket Impero pump for $120 will work better, it won't, I had a friend who got one and he couldn't get it to go past 60 psi! Like I said most mini pumps are a huge fail, I haven't tried all the mini's on the market, so there may be one or two others now other then the ones I mentioned that could get to 100 psi with not as much effort as the others, but if you buy one other than what I mentioned immediately when you get it deflate a tire and try pumping it up to your riding PSI level, if it doesn't make it or it takes a lot of effort to get there take it back, that's what I had to do.