Is it a data-race when several thread *read* the same memory at the same time?

cppreference.com says:

Threads and data races

When an evaluation of an expression writes to a memory location and another evaluation reads or modifies the same memory location, the expressions are said to conflict. A program that has two conflicting evaluations has a data race unless...

This speaks about the scenario of 'thread1-write thread2-read' (W-R) and about the scenario of 'thread1-write thread2-write' (W-W).

What about 'thread1-read thread2-read' (R-R)?