If a player has an Agility level of 80 (can be boosted at a minimum of 75 Agility), they can use the shortcut at the start of the entrance, as it's the fastest way of reaching the fire obelisk. The second best way is to have an Agility level of 70 (65 or higher if boosted) and use the pipe on the right. This will only be half a minute longer than using the higher level shortcut. If you don't meet any of these requirements, then fire orb running will be very long, as the dungeon is relatively long and can take around 3–5 minutes per inventory.