Horseback adventurers Barry Armitage and Joe Dawson are back! They've travelled all the way to Mongolia to compete in the longest toughest horse race in the world: The Mongol Derby.

The race is a recreation of Genghis Khan’s vast messenger system and covers 1000 kilometers of wilderness across the Mongolian steppe. They have only three training days in which to learn the rules, suss out the competition and acclimatise to the scorching heat and wild wild wild Mongolian horses. Barry and Joe begin to realise what they are in for, especially after they both lose their rides on the first day of the race.

It’s the end of day one of the Mongol Derby, the longest, toughest horse race in the world, and a disastrous combination of error and bad luck has put Barry and Joe at the back of the pack. If they want to stop eating the other riders’ dust, the brother in laws must learn to adapt to the wild horses and come to grips with the rules of the game. 

After choosing to sleep out, Barry and Joe discover they’re only 10 kilometers behind the leaders and claw their way back in to the Mongol Derby – the longest, toughest horse race in the world - but if they choose the wrong horses again, it could mean another major setback and potentially ruin their chances of catching up with the leaders. 

It's the 4^th day of the Mongol Derby - the longest, toughest horse race in the world. Many have fallen out of the race and there are only 15 riders left. Barry and Joe are at the halfway mark and are in 2nd and 3rd position with a real chance to catch up to the leader, but a turn for the worse means they have to split up. The wild horses, high temperatures and tough Mongolian terrain takes its toll on all the riders and plays havoc on Barry and Joe's chances to win the race.

Barry and Joe have to choose the right horses to maintain their chances of winning the race. It's halfway through day 5 of the Mongol Derby - the longest, toughest horse race in the world. They've completed 14 stages, but the wet weather makes for an uncomfortable ride. The brother in laws have gone from being stone last to 2nd and 3rd position, and are about an hour behind leader Craig Egberink, but the Chinese team are hot on their heels. On day six things take a turn for the worse at their first vet check of the day as Barry gets a two-hour penalty – a delay that could ultimately cost them the race. 

It's the last stage of the Mongol Derby – the longest, toughest horse race in the world - and the sprint for victory has begun. With only a few hours between them and the leaders, Barry and Joe take a gamble and choose the wildest horses at the horse stations to ensure a flat-out pace to the finish line. Will this risk be worth the danger they face on the last stretch of the race? And can they win it?