The RIVALS Summer Update appears to end on Saturday, July 18, 2026. Roblox’s event page lists it as running from Sat, Jun 27, 1:00 AM to Sat, Jul 18, 1:00 AM , and a separate countdown article matches that end date.

Quick scoop

  • Start: June 27, 2026.
  • End: July 18, 2026.
  • That means the summer event lasts about three weeks.

Note

Some articles published right when the event launched said the end date was still unknown, but the Roblox event listing now gives the clearest date.

TL;DR: It ends July 18, 2026.