Teams begin the 4th season from Thean Hou Buddhist Temple, Kuala Lumpur, Malaysia. The Roadblock required one team member to ascend the stairs at the Batu Caves complex while carrying an offering and counting the number of steps. Once at the top, they had to exchange their offering and the correct answer of 272 steps to receive their next clue. The Detour was Flags or Rags. In Flags, teams must search five flags around the ship using ship lingo. In Rags, one team member must lower themselves down to clean windows of the ship, while the other must search for and take a photo of their partner to receive their next clue.

The Roadblock required one team member to guide a ring through an underwater rope maze whilst using diving equiptment. If the team member did not finish the puzzle in time (which is when the diver instructor told them the time is up), the team would incur a four-hour penalty for not completing the Roadblock (which would be assessed at the pit-stop). In this leg's Detour, teams chose between Rapid Water or Rapid Fire. In both detours, teams had to first drive themselves to Kiulu River White Water Rafting. In Rapid Water, teams had to sail a bamboo raft down river rapids and across the river to retrieve their next clue. In Rapid Fire, both teammates had to shoot Malaysian slingshots at two targets to receive their next clue.

In this leg's Detour, teams have to choose between Carry It or Count It. In both detours teams had to first travel to Pettah by public transport. In Carry It, teams had to carry 12 blocks of ice to a market vendor across the fish market. In Count It, teams had to count fish and give the correct amount of 1100 fish to receive their next clue. In this leg's Roadblock, teams traveled to Trendy Connection and one team member to sew a shirt to receive their next clue

In the first Fast Forward of the race, a team had to proceed to the Galle Bus Station and have their heads shaved at a nearby street barber. Once completed, the team had to bring a Hilton Duck and proceed using a marked taxi to the pit stop. In this leg's Roadblock, one team member has to know the year when Sri Lanka became a sovereign state and changed its name from Ceylon to its present name. The team member had to use this year to unlock a treasure chest located along a beach outside the Galle Lighthouse. (The Answer needed to unlock the chest is 1-9-7-2.) In this leg's Detour, teams had to choose between Coconut Course and Language Course. In Coconut Course, teams had climb up a laddered coconut tree and traverse on a hanging rope between two coconut trees. Once done, they will each receive a coconut which they have to give to the chieftain to get their next clue. In Language Course, teams had to go to school and learn from a student ten Sinhalese words. Once they think they have mastered all ten words, they must recite it to a teacher. If they get all ten correct, the teacher will hand them their next clue.

This Leg's Detour was a choice between Jig and Pig. In Jig, teams would do traditional costumes and dance to the satisfaction of two judges. In Pig, teams would compete in a game of catching an oiled pig. They would have to collect two pigs to receive their next clue. At this leg's Roadblock, one team member must kayak to the flagged fish farm and find one of the hundreds of clues as only ten hold the next clue (the one that says "Correct!").

In this leg's Detour, teams had to choose between Plunge or Swing. Both detours are located at Nevis Highwire Platform in Nevis River. In Plunge, each team member must make a bungee jump from a height of 134 metres (440 ft) above the Nevis River to receive their next clue. In Swing, both team members will be seated side by side and swing from a platform 300 metres (980 ft) above the Nevis Canyon to receive their next clue. In this leg's Roadblock, teams travel to Coronet Peak and one team member to find a clue buried in the snow hill using their avalanche rescue transceiver.

In this leg's first Detour, teams had to choose between Pen or Pinot. In Pen, teams must separate three marked sheep from a flock to another pen to receive their next clue. In Pinot, teams must carry and fill a wine barrow with wine to receive their next clue. For the leg's first Roadblock, teams took a taxi to Circus Art School on Sydney Olympic Park, one team member must perform flying trapeze routine to receive their next clue. In this leg's second Roadblock, teams drive themselves to WRX Rally Experience Circuit race and one team member must take a Subaru Impreza WRX and make a lap within 1:42 (one minute and forty-two seconds) to get their next clue. If they did not made the lap after the correct time, they would do it again. In this leg's second Detour, teams must first participate in an Aborigine tradition of face-painting before doing one of the Detours, Bush Chucker and Bush Hunter. Both Detours located at a farm in Coombabah. In Bush Chucker, teams must throw a boomerang and have it land within a marked circular area. In Bush Hunter, teams must throw a hunting spear to a hay bale. After doing their Detour, one team member must eat a live witchetty grub, an Aborigine delicacy, to receive their next clue.

In this leg's Roadblock, one team member must take a Subaru Impreza WRX and make a lap within one minute and forty-two seconds to get their next clue. If they did not made the lap after the correct time, they would do it again. In this Detour, teams must first participate in an Aborigine tradition of face-painting before doing one of the Detours, Bush Chucker and Bush Hunter. In Bush Chucker, teams must throw a boomerang and have it land within a marked circular area. In Bush Hunter, teams must throw a hunting spear to a hay bale. After doing their Detour, one team member must eat a live witchetty grub, an Aborigine delicacy, to receive their next clue.

In this leg's Detour, teams chose between Above or Beyond. In Above, teams travelled to Mandalika Market and had to carry a basket of vegetables above their heads without their hands touching the basket, for a distance of 50 meters. In Beyond, teams had to search Kuburan Cina (Chinese Cemetery) for the tomb of Fam Sam Moy. In this leg's Roadblock, teams rode an outrigger to Gili Trawangan, where one team member took scuba diving lessons at the Blue Marlin Dive Resort before diving into Halik Reef to retrieve a briefcase. They then returned to Gili Trawangan Island and rode a cidomo, a local horse carriage to the aforementioned resort. There, both team members had to count the money in the briefcase totaling (Rp 3,804,000) and use this as the combination to retrieve the next clue from their Sony VAIO laptop. If they did not enter the correct combination within three attempts, they had to wait for 10 minutes before they can enter another combination.

In this leg's Detour, teams must drive to Hwarang Educational Institute and choose between Bow N' Arrow or Rock N' Roll. In Bow N' Arrow, they must choose another team's photograph as target and hit the target three times with a traditional arrow to receive their next clue. In Rock N' Roll, teams must build a ceremonial pagoda to a certain height using rocks to receive their next clue. In this leg's Roadblock, teams must drive to Daereungwon Tomb Complex and one team member must figure out the correct set of three gates to receive their next clue. If the team member incorrectly chooses a gate, s/he will be blocked by warriors. Each team member will be given three attempts to correctly decode the warrior's code or else they have to go back to the starting line.

Recap of events leading up to the final leg of The Amazing Race Asia

In this leg's Detour, teams must choose between Stay Up and Add Up. In Stay Up, teams must successfully ride a wave for an accumulated time of two minutes at the Wave House in Sentosa Island. In Add Up, teams must head to the Gmax Reverse Bungee and add up three numbers called out by the host and get the sum correctly to receive their next clue. In this leg's Roadblock, one team member must make a tightrope walk from tower 1 to tower 2 of the Marina Bay Sands Resort to get their clue. They must then make their way back to tower 1 to finish the task.