How to Measure Distances is an ongoing Spock/McCoy fiction project. All these stories take place along one timeline, which adheres to the canon timeline, but each segment can be read on its own. (That means you can skip right to the smut. Or you can skip over the smut, though I can't imagine why you'd want to do that. Unless you're my mom.)

My original intention was to hold all these segments until the project was completely finished, then post it all at once. But after a while I realized how long that might take, and so instead I am posting them as I complete them. Therefore, you'll find there are many gaps in between segments. If you're familiar with the TOS television and film canon, then there shouldn't be too much confusion about how Spock and McCoy's relationship progresses in these stories, and you'll no doubt be able to put each segment in context. But check back and keep an eye out for new segments which pre-date the ones you've already read.

Red borders are for stories with actual plots
blue borders are for smut, and
yellow borders are for stories that are on the way.