Privacy advocates got access to Locate X, a phone tracking tool which multiple U.S. agencies have bought access to, and showed me and other journalists exactly what it was capable of. Tracking a phone from one state to another to an abortion clinic. Multiple places of worship. A school. Following a likely juror to a residence. And all of this tracking is possible without a warrant, and instead just a few clicks of a mouse.
Mapquest is still around, so that solves one problem. The rest can be alleviated by communicating in person with your partner and aligning on a plan to not get tracked (like partner driving you and leaving their phone at home).
In the absence of that help, friends or family you trust. A cab? The clinic probably has a phone to hail a cab when you’re there.
Disclaimer: I’m just providing work arounds, I’m not saying they’re ideal.