diff --git a/src/runtime/crash_cgo_test.go b/src/runtime/crash_cgo_test.go
index 5ed82d6eea..6fe9364122 100644
--- a/src/runtime/crash_cgo_test.go
+++ b/src/runtime/crash_cgo_test.go
@@ -371,6 +371,10 @@ func TestRaceProf(t *testing.T) {
 	if !platform.RaceDetectorSupported(runtime.GOOS, runtime.GOARCH) {
 		t.Skipf("skipping on %s/%s because race detector not supported", runtime.GOOS, runtime.GOARCH)
 	}
+	if runtime.GOOS == "windows" {
+		t.Skipf("skipping: test requires pthread support")
+		// TODO: Can this test be rewritten to use the C11 thread API instead?
+	}
 
 	testenv.MustHaveGoRun(t)
 
@@ -399,6 +403,13 @@ func TestRaceSignal(t *testing.T) {
 	if !platform.RaceDetectorSupported(runtime.GOOS, runtime.GOARCH) {
 		t.Skipf("skipping on %s/%s because race detector not supported", runtime.GOOS, runtime.GOARCH)
 	}
+	if runtime.GOOS == "windows" {
+		t.Skipf("skipping: test requires pthread support")
+		// TODO: Can this test be rewritten to use the C11 thread API instead?
+	}
+	if runtime.GOOS == "darwin" || runtime.GOOS == "ios" {
+		testenv.SkipFlaky(t, 59807)
+	}
 
 	t.Parallel()
 
diff --git a/src/runtime/testdata/testprogcgo/raceprof.go b/src/runtime/testdata/testprogcgo/raceprof.go
index c098e16196..68cabd4101 100644
--- a/src/runtime/testdata/testprogcgo/raceprof.go
+++ b/src/runtime/testdata/testprogcgo/raceprof.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build (linux && amd64) || (freebsd && amd64)
-// +build linux,amd64 freebsd,amd64
+//go:build unix
+// +build unix
 
 package main
 
diff --git a/src/runtime/testdata/testprogcgo/racesig.go b/src/runtime/testdata/testprogcgo/racesig.go
index 9352679714..b7f3a21529 100644
--- a/src/runtime/testdata/testprogcgo/racesig.go
+++ b/src/runtime/testdata/testprogcgo/racesig.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build (linux && amd64) || (freebsd && amd64)
-// +build linux,amd64 freebsd,amd64
+//go:build unix
+// +build unix
 
 package main