At Canyon Lake in the Tonto National Forest recreation area, swimming off the Boulder recreation site. 4000 meters, 1:13:58. Results: overall 66/93, masters men 8/17. Beautiful day, very nice location, even if it felt like swimming through mud at times.
The best part was finishing hard, passing somebody in the last 200 meters, then getting a huge leg cramp when pulled out of the water, so I collapsed and was writhing around on the ground for a minute or so. When you finish exactly when you can't go any farther, well, isn't that the point?