This is how I've gotten Marriott Gold and SPG Gold from JMB Sapphire (not JGC Sapphire). JMB Sapphire → United Premier Gold (3 months trial,challenge) → Marriott Gold (until Nov 2017) → SPG Gold (until Feb 2018) (^_^)v JMB Sapphire → United Premier Gold (3 months trial,challenge) https://www.united.com/web/en-US/apps/mileageplus/promotions/registrationDetails.aspx?promoCode=TB8230 United Premier Gold (3 months trial,challenge) → Marriott Gold (until Nov 2017) https://secure.unitedmileageplus.com/reg/rewards_plus/statusmatch.html?lang=en Marriott Gold (until Nov 2017) → SPG Gold (until Feb 2018) http://www.marriott.com/marriott-rewards/connect-my-accounts.mi