We're in Edinburgh, Scotland, and start in Old Town.

Max and Katie get us started off at 4:07 and teams must take a train to catch the Stena Line ferry to get to Belfast, Northern Ireland. Bates and Anthony (8 mins behind) talk about wanting to get rid of the Roller Moms, sees them as a real threat.

Country singers are a hour and twenty mins behind the leaders. Mona and Beth are another two hours behind the girls.

Bunching point at the station before the teams take the ferry.

Once in Belfast, teams take cars from a shipyard warehouse. Max/Katie and Hockey Bros take one route, the four ladies go another route. We'll see who made the right move ... and it's Max/Katie and Hockey Bros.

Roadblock - Bog Snorkeling. Weird sport where they have to put on wetsuits and snorkels, then go racing in a little bog to get their next clue. Not helping that it's a bit of a chilly day, either. Time to beat is 4:00 in the bog.

I'd like to see the doctors try this one.

Anthony goes first and makes it in a time of 2:18!
Clue tells them to "find the thing with a ring".
Katie is up next and does it in 3:10.
Mona's turn now and she does it in 2:53.
Jennifer goes in last and for some reason goes into the other side of the dock where it's sludge. Takes a long time to get out and as a result isn't able to finish within the required time.
2nd attempt for Jennifer. She's dealing with claustrophobia and stops halfway down the first lap.