Time for a post race breakdown I guess.
I spent some time on day #1 picking my route and then stuck with it the whole week despite suspicions that Shaye and others may have found better ones. Initially I started with the list that Ozric referred us to in the rules but in the end I used visual inspection of the galaxy map filtered on Thargoid civilisation (referring back to the list to make sure my chosen systems had active Thargoid bases) in order to plan my route.
The three Thargoid base systems I chose were:
Pleiades Sector EB-X C1-2 ABC 3 C (1,964Ls from main star)
Pleiades Secor IH-V C2-3 1 B (962Ls from main star)
Pleiades Secor OD-S B4-1 2 A (312 Ls from main star)
For Unlimited, from the crash site that meant I had: 1 jump to site #1, 2 jumps to site #2, 2 jumps to site #3, 1 jump back to Merope
And for Regulation I had: 3 jumps to site #1, 3 jumps to site #2, 3 jumps to site #3, 1 jump back to Merope
My bookmarks were as follows:
The numbers in brackets at the start of each base site bookmark (280, 160 and 0) were the headings I needed to be approaching the bases from such that my chosen landing spots were on the far side (leaving me with my back facing a non-blocked entrance).
As an example here's the landing spot for site #2, 160 heading circled. It turned out that in each case I ended up landing just in front of a small "branch" of Thargoid base structure (also circled) suggesting that the structure sites are actually all clones of each other.
Other than that getting a good time was down to fast supercruise approaches and descents to the planet surfaces, playing the odds to get runs with minimal hyperdictions, clean landings and not fumbling my various interactions with the menus too much. I was ejecting the Thargoid Sensor on departure from the final base in the vague hope that doing so would minimise the risk of being hyperdicted (or interdicted by pirates) on the way back to Merope.
Here's my 34:40 regulation run in its entirety (sped up to get it down to a watchable 10 minutes for those interested).
Source: https://youtu.be/OssAuyd0oog
Only other things of note were that the crash site had an unfortunate arrangement of mountain and crater mound which tended to drop you out of glide mode early (I chose a very particular approach vector to try and minimise the effect of that), and as mentioned previously, I went for one of the Sensors further back at the wreck as the closer one had debris which the SRV had a nasty tendency to get stuck on.