diff --git a/CHANGES/12569.misc.rst b/CHANGES/12569.misc.rst
new file mode 100644
index 00000000000..32af3f259b4
--- /dev/null
+++ b/CHANGES/12569.misc.rst
@@ -0,0 +1,3 @@
+Reduced payload sizes and request counts in the slowest client and URL
+dispatcher benchmarks so they no longer dominate CI runtime
+-- by :user:`bdraco`.
diff --git a/tests/test_benchmarks_client.py b/tests/test_benchmarks_client.py
index abcc127af0a..022de894b91 100644
--- a/tests/test_benchmarks_client.py
+++ b/tests/test_benchmarks_client.py
@@ -205,14 +205,14 @@ def _run() -> None:
         event_loop.run_until_complete(run_client_benchmark())
 
 
-def test_one_hundred_get_requests_with_10mb_chunked_payload(
+def test_one_hundred_get_requests_with_1mb_chunked_payload(
     event_loop: asyncio.AbstractEventLoop,
     aiohttp_client: AiohttpClient,
     benchmark: BenchmarkFixture,
 ) -> None:
-    """Benchmark 100 GET requests with a payload of 10 MiB using read."""
+    """Benchmark 100 GET requests with a 1 MiB chunked payload using read."""
     message_count = 100
-    payload = b"a" * (10 * 2**20)
+    payload = b"a" * 2**20
 
     async def handler(request: web.Request) -> web.Response:
         resp = web.Response(body=payload)
@@ -234,14 +234,14 @@ def _run() -> None:
         event_loop.run_until_complete(run_client_benchmark())
 
 
-def test_one_hundred_get_requests_iter_chunks_on_10mb_chunked_payload(
+def test_one_hundred_get_requests_iter_chunks_on_1mb_chunked_payload(
     event_loop: asyncio.AbstractEventLoop,
     aiohttp_client: AiohttpClient,
     benchmark: BenchmarkFixture,
 ) -> None:
-    """Benchmark 100 GET requests with a payload of 10 MiB using iter_chunks."""
+    """Benchmark 100 GET requests with a 1 MiB chunked payload using iter_chunks."""
     message_count = 100
-    payload = b"a" * (10 * 2**20)
+    payload = b"a" * 2**20
 
     async def handler(request: web.Request) -> web.Response:
         resp = web.Response(body=payload)
@@ -355,14 +355,14 @@ def _run() -> None:
         event_loop.run_until_complete(run_client_benchmark())
 
 
-def test_one_hundred_get_requests_with_10mb_content_length_payload(
+def test_one_hundred_get_requests_with_1mb_content_length_payload(
     event_loop: asyncio.AbstractEventLoop,
     aiohttp_client: AiohttpClient,
     benchmark: BenchmarkFixture,
 ) -> None:
-    """Benchmark 100 GET requests with a payload of 10 MiB."""
+    """Benchmark 100 GET requests with a content-length payload of 1 MiB."""
     message_count = 100
-    payload = b"a" * (10 * 2**20)
+    payload = b"a" * 2**20
     headers = {hdrs.CONTENT_LENGTH: str(len(payload))}
 
     async def handler(request: web.Request) -> web.Response:
@@ -507,7 +507,7 @@ def test_ten_streamed_responses_iter_chunked_1mb(
     """Benchmark 10 streamed responses using iter_chunked 1 MiB."""
     message_count = 10
     MB = 2**20
-    data = b"x" * 10 * MB
+    data = b"x" * 6 * MB
 
     async def handler(request: web.Request) -> web.StreamResponse:
         resp = web.StreamResponse()
diff --git a/tests/test_benchmarks_web_urldispatcher.py b/tests/test_benchmarks_web_urldispatcher.py
index 4fe8bcae929..0304db3b8b6 100644
--- a/tests/test_benchmarks_web_urldispatcher.py
+++ b/tests/test_benchmarks_web_urldispatcher.py
@@ -360,7 +360,7 @@ async def handler(request: web.Request) -> NoReturn:
 
     requests = [
         _mock_request(method="GET", path=f"/api/{customer}/update")
-        for customer in range(250)
+        for customer in range(150)
     ]
 
     async def run_url_dispatcher_benchmark() -> web.UrlMappingMatchInfo | None:
@@ -402,7 +402,7 @@ async def handler(request: web.Request) -> NoReturn:
     alnums = string.ascii_letters + string.digits
 
     requests = []
-    for i in range(250):
+    for i in range(150):
         owner = "".join(random.sample(alnums, 10))
         repo = "".join(random.sample(alnums, 10))
         pull_number = random.randint(0, 250)
@@ -473,7 +473,7 @@ async def handler(request: web.Request) -> NoReturn:
     alnums = string.ascii_letters + string.digits
 
     requests = []
-    for i in range(250):
+    for i in range(150):
         owner = "".join(random.sample(alnums, 10))
         repo = "".join(random.sample(alnums, 10))
         pull_number = random.randint(0, 250)