If you scroll to the bottom of the sign up page it gives a breakdown I found to be helpful:
Please note that Club
runDisney Membership benefits for the 2023-2024
runDisney race season will begin on October 1, 2023 and will be valid through September 30, 2024.
During the 2023-2024 Club
runDisney Membership period, onsite benefits, such as early access to the
runDisney Merchandise Shop at the
runDisney Health & Fitness Expo, can be enjoyed during the following
runDisney race weekends:
2023 Disney Wine & Dine Half Marathon Weekend
2024
Disneyland Half Marathon Weekend
2024
Walt Disney World Marathon Weekend
2024 Disney Princess Marathon Weekend
2024
runDisney Springtime Surprise Weekend
During the 2023-2024 Club
runDisney Membership period, guaranteed race registration benefits for Gold and Platinum Club
runDisney Members can be enjoyed for the following
runDisney race weekends:
2024 Disney Wine & Dine Half Marathon Weekend
2025
Disneyland Half Marathon Weekend
2025
Walt Disney World Marathon Weekend
2025 Disney Princess Marathon Weekend
2025
runDisney Springtime Surprise Weekend