Place a Brewing Stand and fuel it with Blaze Powder
Put Water Bottles in the bottom slots
Add Nether Wart to make Awkward Potion
Add Sugar to the Awkward Potion to make Potion of Swiftness
Add Redstone Dust to extend the duration
Add Glowstone Dust to make Potion of Swiftness II
Add Gunpowder to make a Splash Potion of Swiftness
Add Dragon’s Breath to a Splash Potion of Swiftness to make a Lingering Potion of Swiftness