What do you all use to measure distance and pace?

I don't have a Garmin. I rely heavily on the Course Tool on here. Once you use that for awhile you can develop a pretty accurate 'feel' for time, pace and distance, but I'd still use either a Garmin or the Course Tool where possible. At my best (which usually corresponds to how much running I'm doing) I can usually estimate to within a half mile or less of how long I've been running but that takes time and I still map it out to be safe. It is unrealistic for those of us who are human to get a wheel measurement for every run we do. That's why we have things like the Course Tool and Garmins, especially for trail type runs or runs on curvy courses. I lost my watch (I hate wearing one anyway) so right now I use my desk clock and just subtract the 5 minutes it takes to get from my room to running and back and then use the course tool to find the distance. You will also find that once you know a specific run is a certain length you'll use it over again or use parts of it that you know the length of over again. Soon you'll have this "bank" or smorgasbord of runs and run segments and you'll be piecing them together in new ways but still knowing the distance and hardly even need to use the Course Tool. If you want to be obsessive like me you can write them down or save them using the course tool. Sorry for the random word salad but I just woke up from my Sunday Nap and am not exactly coherent...