I do a lot of long rides, from experience, its better to carry a pump, not a mini pump along with CO2, but one of the frame pumps if you can fit one to your bike. Also a roll of insulation tape comes in handy for unexpected jobs, for example I overheated my front wheel wheel leading to a blowout, repairing it was a major issue, my plastic Mavic rim tape had become very distorted and expanded with the heat and would no longer fit the rim it was that loose, A few turns over the rim tape with insulation tape solved the problem and held up for another 200+ till I got home. But a lesson learnt, avoid plastic rim tape.