I see there was an F50 ahead of you as well as an M50. :-)
Yeah, Brian went by about halfway - basically once we got off snow and onto pavement in the park - didn't push it too hard as I had the O-Rocs (no cushioning) and didn't want the thrashing. Gained some ground on him N of the park - back on packed snow. But he maintained the gap on the pavement back into park. Knew there was a woman ahead of me - out of sight by halfway - didn't realize she was a 50+ until I saw results. But I'm happy with it.
I think I erased 2/3rds of the deficit in the series tally though - should be into 2nd now and probably good to erase the final 40 pts next week. This assumes my back of napkin math is correct... and that I show up and put in a reasonable effort