Some ion trajectories involve constant low acceleration. It really adds up time. You accelerate halfway there, then decelerate the rest of the way.

The dawn spacecraft mission to ceres has 48,000+ hours of gentle acceleration under ion propulsion. That’s 5.5 years of firing. But it gets over 38,620 km/h of delta-v (acceleration).

https://www.jpl.nasa.gov/news/nasas-dawn-spacecraft-fires-past-record-for-speed-change/

That’s Xavlegbmaofffassssitimiwoamndutroabcwapwaeiippohfffx !

https://en.wikipedia.org/wiki/Xavlegbmaofffassssitimiwoamndutroabcwapwaeiippohfffx#%3A~%3Atext=Xavlegbmaofffassssitimiwoamndutroabcwapwaeiippohfffx%2C+often+abbreviated+as+Xavleg%2CInternet+memes+and+graphic+violence.

https://open.spotify.com/track/56DE2Cjylwj1Htik6HKP4o

They are great.