"I'm not in a position to say what might be good or bad about the course," Kawano said, but with regard to the 13 km straight out-and-back section of the Hokkaido Marathon course along Shingawa-dori he said, "The security and medical access issues are difficult problems. Preventing spectators from accessing the course would be difficult. The IAAF will probably find it unacceptable."
The organizing committee is examining changing the Shinkawa-dori section of the course to another location. At both the 2012 London Olympics and 2016 Rio de Janeiro Olympics the marathon courses featured looped circuit courses.
translated and edited by Brett Larner