Minecraft wiki entry for Ice, associated text: When riding a pig on ice using a saddle, the pig moves incredibly fast, making journeys across long-frozen lakes easier.
By sprinting and jumping while on ice and inside a 2-block tall tunnel, it is possible to move 16 blocks a second, twice as fast as a full-speed minecart. By replacing the 2-block ceiling with trapdoors, it's possible to travel 1000 blocks in 54 seconds, or 18.518 blocks per second. However, this drains the player's hunger bar extremely quickly at roughly 1 unit per second.
Sugar cane can be generated next to the ice, though they drop as items if updated. This can be observed at random when running through a snowy biome.
Attempting to set ice on fire with a flint and steel causes no flames to appear, but the flint and steel's durability still decreases by 1.‌[Bedrock Edition only] The same thing happens with glass and the sides of non-flammable blocks.
Ice is classified as a transparent block and therefore does not conduct redstone.
Snow layers are the only transparent block that cannot be placed on ice.
When a player holds an ice block, the normals of the smaller model are flipped inside out, giving a strange effect.