Before switching to injections I had a lot of concerns about how injections would work with running and being on the bike. In three weeks I have completed a few 50 mile bike rides, ten mile runs and completed my first trail half marathon. During all of my training and my race my blood sugar stayed in range, was this just because of the injections? No, but that a lot to do with it. At the end of the day if it's the pump or injections I'm still the one making all of the decisions. Timing is the most important aspect when it comes to keeping my blood sugar in range.
One luxury of injections is the freedom to get on the bike or go for a run if my blood sugar is in range. With the pump I would have to suspend the pump and wait for that to take effect. With injections as long as I don't have any active insulin I can get on the bike or run as long as my blood sugar is in it's set range. That is huge!!! Life isn't always scheduled and when I can run or bike I like being able to do it and not wait for my pump to be suspended. Having the CGM connected 24/7 is also a huge help.
As always this is what works best for me right now. This will not work everyone and working closely with your doctor will help you find the best way to manage your diabetes.