Great ride report, and congratulations on completing your second 600k. We had a similar experience on our first 600k this year. A friend recommended the Louisville Kentucky 600k. There was some surprise when we arrived (turns out it wasn't because we were strangers, but because we were on a tandem).

Our stats were 363 miles, 22,354 elevation gain, 38:24:02 elapsed time, 33:43 moving time, average speed 11.5 mph.

My captain had a difficult time convincing me to get back out after the overnight control for the final 200k ... it was only the thought of having to do another 600k which convinced me that finishing the 200k was the better alternative.

It was all worth it for the feeling afterwards that we had met the challenge.

Are you planning to enter the lottery to do Paris-Brest-Paris next year? That is our plan - hope to meet you there.

PS The friend - he did the St Louis 600k which had one-tenth the climbing at only 2,500 elevation gain.