Racing
Weekend run mode, qualifier tickets, and Hermes gear.
Run mode is a community race. Stats are pulled to the same baseline, so every level and every class can enter. The final rewards include items used to exchange for Hermes cash gear.

The blog post says the write-up is still in progress. Qualifier and final schedules were once merged onto Saturday and Sunday. The two-round schedule below is the blog's reference. Check the latest Discord notice before you farm it.
Rules as written

Each round holds at most 20 people. Only the first 10 finishers are rewarded. Skipping a round removes you from the overall prize, under the original rules.
The reward NPC is the server's usual gear-exchange NPC.
Medals that exchange for Hermes still drop when you enter Run mode on Saturday and Sunday, even while the two rounds are scored together.
Qualifier

Buy a Breeze Run ticket, shown in English as Breeze Run ticket, from the potion NPC. One ticket is one entry. It is cheap.
Rewards: a Champions League ticket and a Gada bag, which can contain Wcoin.
Final

You need a Champion League ticket from the qualifier, one ticket per entry. The track and obstacles change a little from the qualifier.
Rewards: an item that exchanges for Hermes. First place exchanges immediately for 1 of 3 items. Second place needs 2 items to exchange for 1. Third place needs 3. You also get a random-rank refine-rate stone, a 7-day "Catch me if you can" medal, and materials to exchange for medals.
Mana during the race

Dashing nonstop burns MP, and MP in the race is capped. You cannot drink potions. Raise MP regen as high as you can.
Priests have an edge because their maxed MP regen skill is already over 600. Other classes can use the Just Married achievement, +500% MP regen, or the Sohee pet, whose skill restores the owner's mana.