There was a lot of uncertainty about the bike course after 2016 (it was short by ~20 miles that year), which might explain why 2017 took a long while to fill up.
Edit: I corrected the dates as it was 2016 (not 2015) that was short.
http://powerful-problem-solving.com
Edit: I corrected the dates as it was 2016 (not 2015) that was short.
http://powerful-problem-solving.com