Seville to Lagos by is circa 260 kms. The sections between Seville and Huelva, Castro Marim and Faro and Lagoa - Lagos are very hilly. Likely transit time using the non-motoway roads about six hours dependent on posterior burn. Also be aware that as we head into summer the daytime temperature will also result in other types of burn and discomfort.
I remember many years ago riding a Honda 185cc Trail from Johannesburg to Beitbridge on a summer day and that was not recommended.
I also think that licensing and insurance restrictions between Spain and Portugal may preclude taking a moped into the other country.
