Snowball's Chance is located in the "Last Chance" area in the northeast section. Sinterpol HQ is in the "Rebellion Square" area in the southwest section, near the highway. Having all Flight Upgrades will make this easier. To ensure success, a good amount of stamina and at least three flaps will be required. Start by going to the roof of Snowball's Chance Hotel & Casino. Reach the tallest part of the roof then place a map marker for Sinterpol HQ. Charge a jump and sprint in a circle until you are at full speed. When ready, jump towards the middle of the map. At the peak of your jump, start flying. Use one flap early, another one soon afterwards, then a third flap as you pass the large floating building at about halfway to your destination. Maneuver around the building as you fly towards the map marker. Fly directly over it then use "Flight – Hover". You can also hit the peak of the building to qualify. Note: This will not work if you dodged spire missiles along the way.