June is here, and with the new month comes the next Apple Watch activity challenge. Meanwhile, Apple Fitness+ has added a new treadmill workout for subscribers. Global Running Day is Wednesday, June 3 Apple Watch users can complete the Global Running Day Challenge today, June 3. Completing the virtual activity challenge requires logging a running workout with at least 5K (3.1 miles) distance. Global running Day Challenge participants can unlock a digital trophy as well as Fitness app stickers to mark the virtual event. Four animated stickers include someone running in a dinosaur costume, a pair of people running together, someone running with their dog, and a colorful version of the 2026 Global Running Day Challenge award. Apple Fitness+ adds a new Treadmill workout In addition to today’s Global Running Day Challenge, Apple Fitness+ has added a new Treadmill workout in June that includes six all-out intervals lasting 30 seconds each.…