Hefty herbivore Nigersaurus takes on cunning carnivore Sinosauropteryx through a misty bamboo forest. Alongside a conspiracy of lemurs, they'll battle a blaze and cross a crevasse. But who will be catapulted across the finish line first?

Mesozoic miniatures Dilong and Aquilops race through an underground sewerage system. Together they'll follow the path of poo, but who will win and who will be number two?

It's a clash of the titans through the famous rainforests of Christmas Island! Will Patagotitan's long neck, whip tail or huge heart be her best asset? Why is Tyrannotitan doing a Jurassic jig? And will the annual red crab migration ruin the race? 

The largest flyer of all time takes on the 'dragon of death' in a gothic gloomscape. Quetzalcoatlus and Thanatosdrakon fly through thunder, lightning, and a batty blizzard. But how will they deal with grave danger on the ground?

Domers are advised this episode is a little scarier than usual, so if you're not a spooky fan it's a good idea to listen with your grown-up.

Grab your togs and jandals! Psittacosaurus and Maisaura are racing through the mountains and mud pools of Aotearoa! Will Maiasaura outsize her little competitor? Will Psittacosaurus meet a furry nemesis at the finish line? 

Two famous long necks race through a natural history museum! Will Diplodocus outsize her ancestor? What's waiting for Massospondylus in the Palaeolithic exhibit? And will Tim be okay?

Ancient amphibians go head-to-head in a Dino Dome first! Will 'devil toad' Beelzebufo or 'big head' Eryops triumph in the mangrove maze? And what will be revealed hiding beneath the bubbling mud as the tide recedes?

It's Aussie versus Aussie in a megafauna match-up through a modern-day zoo! Will the colossal kanga Procoptodon or whopping wombat-like Diprotodon win? And how will they deal with loose lions and stampeding elephants?

We're back in the Dome for ten new roar-some races! First up: speedy Gallimimus takes on stocky Sauropelta in a race across an Arctic ice shelf... They better not fall in since neither dino can swim! And what's that shadow in the water? There's something lurking in the cold, dark deep...

Can two famous flyers make it over the craters and cliffs of an alien planet? The Dino Dome transforms into Mars for a final season two showdown that is truly out of this world!