You can find something comfortable in nearly any boot style, since they're almost all based on designs that were actually intended to be used for long stretches

You can find something comfortable in nearly any boot style, since they're almost all based on designs that were actually intended to be used for long stretches of physical activity. Work-boot styles (obviously), equestrian styles (western, Chelsea, jodhpur), military (chukkas, "jump boots"), and hunting (which even includes most "dress" styles, which are typically based on rural British hunting/stalking boots) all have practical-wear lineage, and usually are little removed from the originals, if at all.