If the egg is a Magikarp, it takes 1,280 steps to hatch.
If the egg is a Pichu, Cleffa, Igglybuff, or Togepi, it takes 2,560 steps to hatch.
If the egg is a Caterpie, Weedle, Pidgey, Rattata, Spearow, Zubat, Geodude, Sentret, Hoothoot, Ledyba, or Spinarak, it takes 3,840 steps to hatch.
If the egg is a Onix, Mr. Mime, Scyther, Pinsir, Misdreavus, Heracross, Mantine, Skarmory, Tyrouge, Smoochum, Elekid, or Magby, it takes 6,400 steps to hatch.
If the egg is an Omanyte or Kabuto, it takes 7,680 steps to hatch.
If the egg is an Eevee or Aerodactyl, it takes 8,960 steps to hatch.
If the egg is a Chansey, Lapras, Snorlax, Dratini, or Larvitar, it takes 10,240 steps to hatch.
If the egg is anything else, it takes 5,120 steps to hatch.