Kotohira is on the JR Dosan Line. From Takamatsu, rapid trains depart hourly between 10AM and 8PM, reaching Kotohira in 49 minutes ¥830. Buses also run from Takamatsu Airport (http://www.takamatsu-airp...) 50 minutes, ¥1500. The private Kotoden Kotohira Line ç´é»ç´å¹³ç· departs from Takamatsu-Chikko station on the hour and half-past one hour, ¥610.
From Okayama, Kotohira can be reached in one hour by taking the hourly Nanpu limited express ¥3160, or occasional local trains 105 minutes. Another option is the Marine Liner rapid train, which leaves at approx. 44 minutes past the hour, to Sakaide and then a change for the local to Kotohira 80-90 minutes, ¥1300.