Frostfell Vehicles

The King's Road is the only true road in the north. It's north-south path is maintained and well guarded in the North by Houses Reed, House Dustin, House Cerwyn, House Stark and House Umber. As well as protection from the Night's Watch. It passes near Moat Calin, Castle Cerwyn, Winterfell, and ends at the Wall at the base of Castle Black. 

If one wishes to travel to other locations over the cold northern steppes, one utilizes a variety of sleds pulled by draft horses, ice sled wagons pulled by mastodons or sleek sailing ice ship if one wishes to travel swiftly. Travel off the King's Road comes with many dangers however including brigands, monsters and natural hazards, not to mention common conveyance malfunction. 

Its just a sled. 

Common Sled: Medium vehicle; Handle Animal +2; Spd drawn (clumsy); Overall hp 40 (hardness 5); Overall AC 4; Ram 3d6; Face 15 ft. by 5 ft.; Height 5 ft.; Crew 1; Weight 300 lb., Cargo 500 lbs; Cost 20 gp. 

Drawn across ice or snow, the sled is an almost entirely exposed structure. Eight riding dogs can pull the sled over ice or packed snow at a speed of 40 feet (35 miles per day), even if it’s fully loaded. Untracked snow slows the speed by one-half, and deep snow cuts it to one-quarter.

Dwarven Warsled: Huge vehicle; Handle Animal +2; Spd drawn (poor); Overall hp 100 (hardness 7); Overall AC 3; Ram 6d6; Face 15 ft. by 10 ft.; Height 5 ft.; Crew 1 (plus 3 passengers); Weight 900 lb.; Cargo 700 lb.; Cost 400 gp.

Dwarves of House Umber use trained smilodons (armored polar cats) to pull massive sleds covered with makeshift armor and spikes. The driver and passengers aboard such a warsled gain cover behind a 2-inch barrier of steel and wood (hp 20, hardness 7). Two beasts abreast pull the sled at a speed of 35 feet. (30 miles per day)

Ice Sled-Wagon: Huge vehicle; Handle Animal –2; Spd drawn (poor); Overall hp 60 (hardness 5); Overall AC 3; Ram 4d6; Face 15 ft. by 10 ft.; Height 5 ft.; Crew 1; Weight 400 lb., Cargo 2 tons; Cost 35 gp.

A wagon is open-topped, so the driver and any passengers gain no cover. The most common creatures for the wagon are two heavy horses, which are strong enough to pull a fully loaded wagon at a speed of 35 feet. However, in frostfell regions, wagons may also be drawn by a single mastadon a speed of 40 feet.

An ice sled-wagon can also be equipped with a heavy catapult eliminating the cargo capacity or a light catapult leaving cargo space for ammunition.

Sailing Ice Ship

Sailing Ice Ship "The Snowpiercer": Colossal vehicle; Profession (sailor) +4; Spd ice wind × 30 ft. (average), snow wind × 20 ft. (poor); Overall AC –3; Section hp 50 (hardness 5); Section AC 3; Rigging 80 hp (hardness 0), AC 1; Ram 12d6; Face 80 ft. by 20 ft.; Height 10 ft. (draft 10 ft.); Crew 20; Cargo 150 tons (Spd wind × 15 ft. if 75 tons or more) about 20 - 25 mph; Cost 10,000 gp.

Used by the military forces of the Great Northern Houses or by glacial barbarian raiders, a sailing ice ship has runners that allow it to travel across fields of snow as well as sheets of ice. The deck has enough room for two light catapults or ballistae. 

Winterfell to White Harbor: 340 miles. 2 days by Sailing Ice Ship.

Winterfell to Castle Black: 655 miles. 3 days 12 hours by Sailing Ice Ship. 

White Harbor to Castle Black: 990 miles. 5 days by Sailing Ice Ship. 

*Assumes 8 hours of travel per day. 

Traveling via Weirwood roots to any other Weirwood location in the world takes 24 hours. 

Morpheus Elixir, transport via dreams elixir transports individuals up to 1,000 miles after 8 hours of sleep.