The Royal Enfield Classic 350 is indeed suitable for daily rides of 100 kilometers. It has been reported to be comfortable for such distances, with users noting that they do not feel significant pain after completing 100km rides. The bike can cruise smoothly at speeds of up to 100 km/h, even in strong headwinds, which makes it capable for highway use. In terms of performance, the Classic 350 can maintain a steady speed of 100 km/h with minimal vibration, especially once it is warmed up and in top gear. However, some users have reported minor hiccups at high speeds after long highway trips, but these are not common issues. Regarding fuel efficiency, while it may vary depending on the riding conditions, the Classic 350 generally offers a fuel consumption of around 38.5 km/l, which is reasonable for its class. Overall, the Royal Enfield Classic 350 is a reliable and comfortable choice for daily commutes of 100 kilometers.