Movement speed effects

The following tables compares various movement methods and bonuses.

Aquatic
Basic swimming speed is 413/18 yards per second, which is just over two-thirds of the 7 yd/sec running speed.

Bonuses
The items below increase movement speed on foot by various amounts, and may or may not stack with other movement speed bonuses.

Enchantments:
 * Lavawalker
 * Assassin's Step
 * Earthen Vitality
 * Tuskarr's Vitality
 * Cat's Swiftness
 * Boar's Speed (enchant)
 * Minor Speed

Gems:
 * Fleet Shadowspirit Diamond
 * Quickened Starfire Diamond
 * Swift Windfire Diamond
 * Swift Skyfire Diamond
 * Swift Skyflare Diamond
 * Tireless Skyflare Diamond
 * Swift Starflare Diamond
 * Tireless Starflare Diamond

Passive Equip Items:
 * Defiler's Cloth Boots
 * Highlander's Cloth Boots
 * Figurine - Golden Hare
 * Sprinter's Sword
 * Explorer's Walking Stick
 * Runeblade of Baron Rivendare
 * Earthen Netherscale Boots
 * Devastation
 * Warp Slicer

Active (Use) Equip Items:
 * Egg Basket
 * Skull of Impending Doom
 * Nifty Stopwatch
 * Figurine - Golden Hare
 * Figurine - Ruby Hare
 * Swift Boots
 * Gnomish Rocket Boots
 * Goblin Rocket Boots
 * Rocket Boots Xtreme
 * Rocket Boots Xtreme Lite

Temporarily Consumables:
 * Swiftness Potion
 * Swiftness of Zanza
 * Drums of Speed

Bonuses

 * +2% from Riding Skill
 * +3% from Carrot on a Stick
 * +4% from Mithril Spurs
 * +5% from Gloves & Carrot
 * +6% from Spurs & Gloves
 * +7% from Spurs & Carrot
 * +9% from Spurs & Gloves & Carrot
 * +10% from Riding Crop, Skybreaker Whip, or Mount Up
 * +20% from Crusader Aura, or On a Pale Horse

Speed decreasing effects
There are different types of debuffs that negatively affect movement:
 * Snare debuffs decrease movement by a certain percentage.
 * Daze debuffs decrease movement speed to 50% of your base movement speed, or whatever the minimum limit for movement speed is.
 * Root debuffs stop movement.