This is the route I use for 70 star co-op runs. Some variations may be done to make this route easier or faster. This route is based off of the HMC late route found on https://ukikipedia.net/wiki/RTA_Guide/70_Star Star exits can be canceled when entering a loading zone. Star cutscenes can be canceled when in certain actions (i.e. in a textbox, stuck in ground, opening a door, ect). Both of these save time, but sometimes it may be faster to take a reentry.

BoB: Star 6 WF: All 7 stars (Combine 100s with red coins and whomp king) PSS: 2 stars TotWC BitDW: Red coins + key CCM: Stars 1, 2, 3, 6, and 7 (Combine stars 2, 3, 6, and 7) [This is possible because exiting the cabin cancels the star exit] BBH: Stars 3 and 5 MIPS 1 SSL: Stars 1, 2, 3, and 6 LLL: Stars 1, 2, 3, 4, 5, and 6 DDD: Stars 1, 2, and 4 (Combine stars 1, 2, and 4) [This is possible because going through the loading zone cancels the star exit] BitFS: Red coins + key WDW: Stars 1, 2, 3, 4, and 7 (Combine 100s with secrets and top of the town) THI: Stars 1, 2, and 4 (Combine stars 1, 2, and 4) [This is possible because going through the warp pipe cancels the star exit] Toad 2 TTM: Stars 1, 3, 4, 5, and 6 SL: Stars 1, 2, 3, 4, and 5 [Reenter SL and pause exit, head over to HMC] [Alternatively, one can pause exit just as another is collecting a star] MIPS 2 Toad 1 HMC: Stars 1, 2, 3, and 6 [Reenter HMC and pause exit, head to tippy] RR: Stars 1, 3, 4, and 5 Toad 3 TTC: Stars 1, 2, 3, 4, 5, and 6 BitS: Grand star

Routing notes: There wasn't that much testing with the routing, so here are some things I noted that could be done. Getting BoB star 3 might be faster with sky jump. It might be faster to skip CCM star 3 and only require 1 entry. It might be faster to do CCM star 4 since there's 2 people who can collect the red coins. It might be faster to do LLL 100s since there's 2 people who can collect coins. It is possible to do HMC early by replacing it with another star, though it might not be faster. It might be faster to do DDD manta ray. SL red coins could be skipped like it would normally be done in a regular 70 star run, but I don't think it's faster to skip. TTC 100s might be faster but it definitely won't be easy.