It is not. A simple traceroute shows traffic from Auckland, New Zealand is routed all the way to the San Diego via Los Angeles. Cloudflare sites typically have traceroutes terminating here at Auckland (best case scenario) or in some cases across the pond in Sydney, Australia.
It is interesting to note however I don't observe much latency issues despite a 130ms round trip.
> Keep in mind that 150ms round-trip latency means at least 600ms latency when opening a webpage because of the TCP and TLS handshake.
The solution there is use a CDN, even for the API. Or some anycast IP solution like Global Accelerator (AWS), Global load balancer (GCP) or Front Door (Azure).
You connect to the nearest region for HTTPS handshake and then that takes the "fastest" route back to your origin.
There's a video from AWS documenting how Slack did exactly that: youtube.com/watch?v=oVaTiRl9-v0