It's one year until the women's marathon at the 2020 Tokyo Olympics. For the second year in a row I went out to run about 31 km of the course at the exact time that the women will be racing it. As with last year , I started outside the Olympic Stadium in Sendagaya, ran up to the 15 km turnaround in Asakusa and back to the 20 km point near Nihonbashi, then cut out the out-and-back sections to 24.5 km and 33 km and instead headed back the 10 km or so to the stadium. Starting at 6:00 a.m. sharp, I ran a steady pace just under 5:00/km and made it back to the stadium a little after 9:15 a.m. with about 45 minutes of time lost to red lights, shooting video and live Tweeting, buying drinks and the odd pit stop. Every half hour I stopped to take temperature and humidity readings to get an idea of what kind of conditions the women will probably be facing a year from now. It's been a relatively cool summer so far in Tokyo with an extended rainy season that kept things fro...
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