In video games it's common for characters to run by default: it's faster, why wouldn't you? I think this is also a good approach to apply in real life, at least over short distances. It saves you time and it's a bit of exercise. Over pretty much any distance short enough that I'm not going to break a sweat I'll run.
I've done some of this most of my life (I can still hear my middle school principal shouting to stop running in the hallway—Jeeeeff-reeeey!) though over the last five years or so I've pushed myself to do it more consistently. The more I do it the easier it gets, and the shorter commutes become.
Note that this is another example of describing something I do that works for me, and that I expect would likely work for many more people than I see applying it. But probably not more than 30% of people, though?
(Prompted by a coworker talking about the inconvenience of an 8min distance between two buildings at work that I think of as a 2-3min distance.)
I experimented with this in college but ended up not doing it much, mainly because I was always carrying a backpack full of books + laptop + random ballast. In retrospect I should maybe have optimized a bit more; perhaps there are backpacks that make running more comfortable, and I could have got a lighter laptop, a kindle instead of physical books, etc. Or I could have gotten a jogging stroller (you know, for babies) and put my stuff in it.
It's not too late, I suppose, to do this today. Any thoughts on how to make running to and from work more comfortable and less awkward while carrying two laptops & some random small objects?
You can also just speed-walk: quickly take full size strides, but always keep at least one foot on the ground - this keeps your torso at the same elevation for the whole journey, and eliminates the bouncing (and, added bonus, it doesn't look like you're running)