Been making a few routes over the past year, here of some of my favourites.
GamerTag: Phendrax248
Mudbowl
Share Code: 689 174 151
Laps: 10
My own personal improvement on Mudkickers. Lots of jumps and six crossover segments with a brief section near the end that requires you to go off track, but is easy to spot. The drivatars hate this track and tend to get stuck on the large jump, but that helps spread out the pack with vehicles everywhere by the 2nd lap. Its a cakewalk to win, but where it lacks in challenge, it makes up for in its chaotic fun factor. Highly recommended to race this with AWD on A class or higher.
Eden Luxury Cup
Share code: 391 490 849
Laps: 4
So like an idiot I named my Edinburgh circuits Eden instead of Edin, but I'm too lazy to go back and change each and every one of them. This is the juniors variant made specifically for the slower vehicle classes. This specific blueprint is the luxury cup, which focuses on luxury vehicles from all eras on a calm winters night.
Tour D'Elegance
Share Code: 145 172 007
Laps: 3
Based on the real event at Pebble Beach, Tour D'Elegance is a smooth, scenic route that takes you through the festival site and the parallel woodland road just north of it. This race has a theme of vintage luxury, sport, and race vehicles in Autumn.
Hidden Grove Super Series
Share Code: 483 976 361
Laps: 10
Ignore the image name. One of my absolute favourite blueprints, and a true challenge for talented drivers. If you're going to try any of these, make it this one. Its a very technical route on some of the map's most thin, winding, and secluded roads with a mix of my favourite supercars and super GT vehicles. Be very wary of the technical section at the end of the circuit, as you and the drivatars will have a knack of flying right off the course before the final corner if not careful.
The White Dragon
Share Code: 682 443 816
Laps: 1
I wanted to make two mega tracks based off of my favourite driving roads in horizon 4. A road course to represent the white dragon of England, and a dirt course to represent the red dragon of Wales. This course is the former, and the shorter of the two, spanning throughout a number of roads in the upper half of the map. Think of it as a more technical and scenic Goliath.
Note that in Edinburgh, there is a square knot that looks like it could go in either direction on the minimap, go counter clockwise through this segment.
The Red Dragon
Share Code: 217 835 017
Laps: 2
A true endurance race with an average 24-30min lap time, even at S2 this is a very long course that explores the bulk of the dirt trails on the entire western half of the map, occasionally going off the trail or on tarmac to bridge routes. This course will throw all its got at you; mud, dirt, steep inclines, sharp corners, blind corners, thick forests, deep water, the works. Pay close attention to the course on the first lap, memorize hard to see checkpoints in the wooded areas, and make the final lap count. The drivatars will overshoot corners and get lost in the woods during the opening stretch of this course, but don't feel the need to slow down for them, as they'll catch you just as quickly in the latter half of the race. For those of you who've ever played Baja: Edge of Control, welcome to Britain's version of that.
Note that there is also two "anything goes" variants, one with one lap, and a second with two. Unfortunately their share codes don't want to cooperate with me so you'll have to make a search without them for now.