Complex sentence: One third of the length of the Wakasa Route, good access towards Kyoto and Nagoya, but longer travel time to Osaka, and trains would have to use the existing, already near-capacity Tōkaidō Shinkansen tracks between Maibara and Osaka.
Split into simpler sentences: One third of the length of the Wakasa Route, good access towards Kyoto and Nagoya. Longer travel time to Osaka, and trains would have to use the existing, already near-capacity Tōkaidō Shinkansen tracks between Maibara and Osaka.