I'm scheduled to arrive Madrid 10/19. i want to start/continue in Santo Domingo de la Calzada but keep getting error messages/no info on the rome2rio or alsa sites. are buses running between towns on the Camino? Thanks!
Try the train to Burgos or Logroño and then Bus to Santo Domingo (RENFE).
And the buses between Logroño and Burgos (La Rioja)
In the Rioja page, scroll down to "Autobuses más buscados" and click on "Autobuses Logroño"
Some schedules will change end of September, so they may not be available yet...
There is a bus that goes from Madrid (Ave America) to Santo Domingo de la Calzada, takes 3 hours 20 minutes, however the timetable is only published one month ahead. Have a look at https://jimenezmovilidad.es/
I caught the Madrid to Pamplona bus on Friday, left at 3.00pm stopping in Belorado at 6.30 pm and then Santo Domingo I think. As GerFol says above, it’s not Alsa but another bus company. You can catch it from the main bus station in Avd De America - which is on the metro.