IV. Sicrhau, ble y bo hynny’n ymarferol, bod teithwyr ar y ddau ben i’r llwybr yn gallu cyflawni diwrnod o waith effeithiol ar y naill ochr neu’r llall i’r llwybr drwy gydol y flwyddyn.
IV. Ensure where practical, that travellers at both ends of the route can achieve an effective day’s work at either end of the route throughout the year.