Our longest trip? We have several under our belts in our 200 series (with photographs to confirm). Our single longest trip where we drove everu single day was this: We left from Muscat in Oman, then: Dubai, Abu Dhabi, Riyadh, Up the Red Sea coast to Aqaba (Jordan) thru' to Syria, and across to Turkey and thence onto Maramaris. We returned to Aquaba, crossed Israel into the Sinai desert and then thru' the tunnel under the Suez canal to Cairo. From there we drove down the Nile to Sudan, Ethiopia, Kenya, Tanzania, Mozambique & into Zimbabwe where we have a home. We returned to Muscat via Zambia, Tanzania, Kenya, Sudan, Egypt, Israel, Jordan, Saudi, UAE and back into Oman where I was working at the time. We clocked nearly 32,000kms (nearly 20,000 miles) in the three months we were away. We took bundles of photos with the car as Toyota Oman asked us to record the trip for them. The car was fitted with a Long Ranger fuel tank, under body water tanks (a big mistake), ARB suspension and steel bumpers, a 12,000 Warn winch (not used), a WindCheetah roof rack with a Fiamma awning (constantly used), a double door 95 litre fridge freezer which required one rear seat to be removed. We also had the windows tinted. As standard the car had a very good fridge between the front seats. We did this road trip as a family; me, my wife and our four kids. We reliously changed the engine oil every 3000km's as well - using Toyota garages where they existed to maintain our warranty.
I would not ever do such a trip again in a 200 series - we could not get low sulphur diesel in many places and we had to have a complete motor overhaul once back in Muscat which cost a fortune as we were loosing power and belching black smoke. We now have a heavily modified 100 series and am happier with this. Our next trip is to see how quickly we can drive from London - Cape Town - London but that trip shall be done with two friends as we intend to do it non-stop, literally stopping only for refuelling, food and desperate bathroom stops. The only thing preventing us going is the war currently in Syria. We believe the trip shall take us 11 days each way, based on our knowledge of the route.