diff --git a/polkadot/zombienet_tests/.set_env b/polkadot/zombienet_tests/.set_env
new file mode 100644
index 0000000000000000000000000000000000000000..f5d09f21873573adeb73abd00129b0c0ef0c309d
--- /dev/null
+++ b/polkadot/zombienet_tests/.set_env
@@ -0,0 +1,20 @@
+pathprepend() {
+ for ((i=$#; i>0; i--));
+ do
+ ARG="$@[$i]"
+ if [ -d "$ARG" ] && [[ ":$PATH:" != *":$ARG:"* ]]; then
+ PATH="$ARG${PATH:+":$PATH"}"
+ fi
+ done
+}
+
+# paths are prepend in order, so you can manage with version will run
+# by the order of this array
+CUSTOM_PATHS=(
+ "~/polkadot/target/release"
+ "~/polkadot/target/testnet"
+ "~/cumulus/target/release"
+)
+
+pathprepend $CUSTOM_PATHS
+export PATH=$PATH
diff --git a/polkadot/zombienet_tests/README.md b/polkadot/zombienet_tests/README.md
index 5760e203d958ade1b1cc670739100c5b3890aec7..021d3643e7f9b9ee6c9559567be02843356e328d 100644
--- a/polkadot/zombienet_tests/README.md
+++ b/polkadot/zombienet_tests/README.md
@@ -12,6 +12,49 @@ _The content of this directory is meant to be used by Parity's private CI/CD inf
* [zombienet repo](https://github.com/paritytech/zombienet)
* [zombienet book](https://paritytech.github.io/zombienet/)
+## Running tests locally
+
+To run any test locally use the native provider (`zombienet test -p native ...`) you need first build the binaries. They are:
+
+* adder-collator -> polkadot/target/testnet/adder-collator
+* malus -> polkadot/target/testnet/malus
+* polkadot -> polkadot/target/testnet/polkadot
+* polkadot-collator -> cumulus/target/release/polkadot-parachain
+* undying-collator -> polkadot/target/testnet/undying-collator
+
+To build them use:
+* adder-collator -> `cargo build --profile testnet -p test-parachain-adder-collator`
+* undying-collator -> `cargo build --profile testnet -p test-parachain-undying-collator`
+* malus -> cargo build --profile testnet -p polkadot-test-malus
+* polkadot (in polkadot repo) and polkadot-collator (in cumulus repo) -> `cargo build --profile testnet`
+
+One solution is to use the `.set_env` file (from this directory) and fill the `CUSTOM_PATHS` before *source* it to patch the PATH of your system to find the binaries you just built.
+
+E.g.:
+```
+$ cat .set_env
+(...)
+# by the order of this array
+CUSTOM_PATHS=(
+ "~/polkadot/target/release"
+ "~/polkadot/target/testnet"
+ "~/cumulus/target/release"
+)
+(...)
+
+source .set_env
+```
+
+Then you have your `PATH` customized and ready to run `zombienet`.
+ **NOTE**: You should need to do this ones per terminal session, since we are patching the `PATH` and re-exporting. **Or** you can also `source` this file in your `.bashrc` file to get executed automatically in each new session.
+
+Example:
+
+You can run a test locally by executing:
+```sh
+zombienet test -p native 0001-parachains-pvf.zndsl
+```
+
## Questions / permissions
Ping in element Javier (@javier:matrix.parity.io) to ask questions or grant permission to run the test from your local setup.
diff --git a/polkadot/zombienet_tests/functional/0001-parachains-pvf.zndsl b/polkadot/zombienet_tests/functional/0001-parachains-pvf.zndsl
index 1f187498d78f824526e89809195fec400b580ee2..259f05b8f68bd786af945624da41910535305324 100644
--- a/polkadot/zombienet_tests/functional/0001-parachains-pvf.zndsl
+++ b/polkadot/zombienet_tests/functional/0001-parachains-pvf.zndsl
@@ -63,7 +63,7 @@ eve: reports histogram polkadot_pvf_preparation_time has at least 1 samples in b
one: reports histogram polkadot_pvf_preparation_time has at least 1 samples in buckets ["0.1", "0.5", "1", "2", "3", "10"] within 10 seconds
two: reports histogram polkadot_pvf_preparation_time has at least 1 samples in buckets ["0.1", "0.5", "1", "2", "3", "10"] within 10 seconds
-# Check all buckets >= 20.
+# Check all buckets >= 20.
alice: reports histogram polkadot_pvf_preparation_time has 0 samples in buckets ["20", "30", "60", "180", "+Inf"] within 10 seconds
bob: reports histogram polkadot_pvf_preparation_time has 0 samples in buckets ["20", "30", "60", "180", "+Inf"] within 10 seconds
charlie: reports histogram polkadot_pvf_preparation_time has 0 samples in buckets ["20", "30", "60", "180", "+Inf"] within 10 seconds
@@ -78,8 +78,8 @@ two: reports histogram polkadot_pvf_preparation_time has 0 samples in buckets ["
# APPROVAL_EXECUTION_TIMEOUT(6s). Currently these are not differentiated by metrics
# because the metrics are defined in `polkadot-node-core-pvf` which is a level below
# the relevant subsystems.
-# That being said, we will take the simplifying assumption of testing only the
-# 2s timeout.
+# That being said, we will take the simplifying assumption of testing only the
+# 2s timeout.
# We do this check by ensuring all executions fall into bucket le="2" or lower.
# First, check if we have at least 1 sample, but we should have many more.
alice: reports histogram polkadot_pvf_execution_time has at least 1 samples in buckets ["0.1", "0.5", "1", "2"] within 10 seconds
diff --git a/polkadot/zombienet_tests/functional/0003-parachains-garbage-candidate.toml b/polkadot/zombienet_tests/functional/0003-parachains-garbage-candidate.toml
index 8f82d30e2ac65c8143796bc82f39097f7d8562d6..7c4f5a9f1bcab8550755bfefadd1a1c425b4ac06 100644
--- a/polkadot/zombienet_tests/functional/0003-parachains-garbage-candidate.toml
+++ b/polkadot/zombienet_tests/functional/0003-parachains-garbage-candidate.toml
@@ -27,7 +27,7 @@ requests = { memory = "2G", cpu = "1" }
command = "malus suggest-garbage-candidate"
args = ["-lparachain=debug,MALUS=trace"]
count = 1
-
+
{% for id in range(2000,2003) %}
[[parachains]]
id = {{id}}
diff --git a/polkadot/zombienet_tests/misc/0001-paritydb.toml b/polkadot/zombienet_tests/misc/0001-paritydb.toml
index c40e0969d0841c7c5783f53ad866fee3a31479af..38fa56898196ae21934e786a26cb6265ed915282 100644
--- a/polkadot/zombienet_tests/misc/0001-paritydb.toml
+++ b/polkadot/zombienet_tests/misc/0001-paritydb.toml
@@ -20,7 +20,7 @@ requests = { memory = "2G", cpu = "1" }
name = "validator"
count = 10
args = ["-lparachain=debug", "--db=paritydb"]
-
+
{% for id in range(2000,2010) %}
[[parachains]]
id = {{id}}
diff --git a/polkadot/zombienet_tests/smoke/0001-parachains-smoke-test.toml b/polkadot/zombienet_tests/smoke/0001-parachains-smoke-test.toml
index 4d4324822f4371823907a68124a06c6d60de3979..d132945aeea0d55b878f6436172e8e3045d7949b 100644
--- a/polkadot/zombienet_tests/smoke/0001-parachains-smoke-test.toml
+++ b/polkadot/zombienet_tests/smoke/0001-parachains-smoke-test.toml
@@ -21,7 +21,7 @@ addToGenesis = false
[parachains.collator]
name = "collator01"
image = "{{COL_IMAGE}}"
- command = "/usr/local/bin/adder-collator"
+ command = "adder-collator"
args = [ "-lruntime=debug,parachain=trace" ]
[types.Header]
diff --git a/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.toml b/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.toml
index bc1dbe6d3ed5ee76e6aa5833a17b68858f998d66..48c79a861bed4faaa74feb7fdb2655fc945082ed 100644
--- a/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.toml
+++ b/polkadot/zombienet_tests/smoke/0003-deregister-register-validator-smoke.toml
@@ -21,4 +21,3 @@ command = "polkadot"
[[relaychain.nodes]]
name = "dave"
args = [ "-lruntime=debug,parachain=trace" ]
-
\ No newline at end of file