diff --git a/.codspeed-runner-version b/.codspeed-runner-version
index 6ed7776..2da4316 100644
--- a/.codspeed-runner-version
+++ b/.codspeed-runner-version
@@ -1 +1 @@
-4.9.0
+4.10.0
diff --git a/.github/test-codspeed.yml b/.github/test-codspeed.yml
new file mode 100644
index 0000000..a6d1aa6
--- /dev/null
+++ b/.github/test-codspeed.yml
@@ -0,0 +1,5 @@
+benchmarks:
+  - name: "test"
+    exec: echo "Working!"
+  - name: "test2"
+    exec: echo "Also working!"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index af69b24..4c6917d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,6 +50,8 @@ jobs:
             if [ "$output" != "Hello" ]; then
               echo "Assertion failed: Expected 'Hello' but got '$output'"
               exit 1
+            else
+              echo "Environment variable check passed with $output."
             fi
       - name: Check action in a custom directory
         uses: ./
@@ -111,3 +113,16 @@ jobs:
           go-runner-version: ${{ matrix.version }}
           mode: walltime
           run: echo "Testing version format ${{ matrix.version }}!"
+
+  test-config-file:
+    runs-on: ubuntu-latest
+    env:
+      CODSPEED_SKIP_UPLOAD: true
+    steps:
+      - uses: actions/checkout@v4
+      - run: cat .github/test-codspeed.yml
+      - name: Check action with config file (no run input)
+        uses: ./
+        with:
+          mode: memory
+          config: .github/test-codspeed.yml
diff --git a/README.md b/README.md
index dda0933..263069b 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,12 @@ GitHub Actions for running [CodSpeed](https://codspeed.io) in your CI.
 ```yaml
 - uses: CodSpeedHQ/action@v4
   with:
-    # [REQUIRED]
+    # [OPTIONAL]
     # The command used to run your CodSpeed benchmarks
+    #
+    # Leave empty to use targets defined in your project configuration (e.g `codspeed.yml`)
+    # https://codspeed.io/docs/cli#configuration
+    # ⚠️ WARNING: for action/runner versions lower than v4.9.0, this parameter is required.
     run: "<YOUR_COMMAND>"
 
     # [REQUIRED]
@@ -40,6 +44,11 @@ GitHub Actions for running [CodSpeed](https://codspeed.io) in your CI.
     # ⚠️ WARNING: if you use `defaults.run.working-directory`, you must still set this parameter.
     working-directory: ""
 
+    # [OPTIONAL]
+    # Path to a CodSpeed configuration file (codspeed.yml).
+    # If not specified, the runner will look for a codspeed.yml file in the repository root.
+    config: ""
+
     # [OPTIONAL]
     # Comma-separated list of instruments to enable. Possible values: mongodb.
     instruments: ""
diff --git a/action.yml b/action.yml
index 0ee33d7..c9f562d 100644
--- a/action.yml
+++ b/action.yml
@@ -8,7 +8,7 @@ author: "Arthur Pastel"
 inputs:
   run:
     description: "The command to run the benchmarks"
-    required: true
+    required: false
 
   mode:
     description: |
@@ -77,6 +77,10 @@ inputs:
     description: "The version of the go-runner to use (e.g., 1.0.0, 1.0.0-beta.1). If not specified, the latest version will be installed"
     required: false
 
+  config:
+    description: "Path to a CodSpeed configuration file (codspeed.yml). If not specified, the runner will look for a codspeed.yml file in the repository root."
+    required: false
+
 runs:
   using: "composite"
   steps:
@@ -107,6 +111,8 @@ runs:
       env:
         GH_MATRIX: "${{ toJson(matrix) }}"
         GH_STRATEGY: "${{ toJson(strategy) }}"
+        # This is needed to properly handle quotes and multiline commands in the 'run' input properly, rather than doing `RUN_INPUT_RUN=${{ inputs.run }}` in the script
+        CODSPEED_INPUT_RUN: ${{ inputs.run }}
       run: |
         # Validate required inputs
         # (custom message for smoother v4 migration)
@@ -160,35 +166,42 @@ runs:
           fi
         fi
 
-        # Get the runner arguments
-        RUNNER_ARGS=""
+        # Build the runner arguments array
+        RUNNER_ARGS=()
         if [ -n "${{ inputs.token }}" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --token ${{ inputs.token }}"
+          RUNNER_ARGS+=(--token "${{ inputs.token }}")
         fi
         if [ -n "${{ inputs.working-directory }}" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --working-directory=${{ inputs.working-directory }}"
+          RUNNER_ARGS+=(--working-directory="${{ inputs.working-directory }}")
         fi
         if [ -n "${{ inputs.upload-url }}" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --upload-url=${{ inputs.upload-url }}"
+          RUNNER_ARGS+=(--upload-url="${{ inputs.upload-url }}")
         fi
         if [ -n "${{ inputs.mode }}" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --mode=${{ inputs.mode }}"
+          RUNNER_ARGS+=(--mode="${{ inputs.mode }}")
         fi
         if [ -n "${{ inputs.instruments }}" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --instruments=${{ inputs.instruments }}"
+          RUNNER_ARGS+=(--instruments="${{ inputs.instruments }}")
         fi
         if [ -n "${{ inputs.mongo-uri-env-name }}" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --mongo-uri-env-name=${{ inputs.mongo-uri-env-name }}"
+          RUNNER_ARGS+=(--mongo-uri-env-name="${{ inputs.mongo-uri-env-name }}")
         fi
         if [ "${{ inputs.cache-instruments }}" = "true" ] && [ -n "${{ inputs.instruments-cache-dir }}" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --setup-cache-dir=${{ inputs.instruments-cache-dir }}"
+          RUNNER_ARGS+=(--setup-cache-dir="${{ inputs.instruments-cache-dir }}")
         fi
         if [ "${{ inputs.allow-empty }}" = "true" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --allow-empty"
+          RUNNER_ARGS+=(--allow-empty)
         fi
         if [ -n "${{ inputs.go-runner-version }}" ]; then
-          RUNNER_ARGS="$RUNNER_ARGS --go-runner-version=${{ inputs.go-runner-version }}"
+          RUNNER_ARGS+=(--go-runner-version="${{ inputs.go-runner-version }}")
+        fi
+        if [ -n "${{ inputs.config }}" ]; then
+          RUNNER_ARGS+=(--config="${{ inputs.config }}")
+        fi
+
+        if [ -n "$CODSPEED_INPUT_RUN" ]; then
+          RUNNER_ARGS+=(-- "$CODSPEED_INPUT_RUN")
         fi
 
         # Run the benchmarks
-        codspeed run $RUNNER_ARGS -- '${{ inputs.run }}'
+        codspeed run "${RUNNER_ARGS[@]}"