diff --git a/challenges/2021/01-sonarSweep/benchmark.json b/challenges/2021/01-sonarSweep/benchmark.json
new file mode 100644
index 0000000..96ea0a0
--- /dev/null
+++ b/challenges/2021/01-sonarSweep/benchmark.json
@@ -0,0 +1,31 @@
+{
+  "day": 1,
+  "dir": "challenges/2021/01-sonarSweep",
+  "implementations": {
+    "Golang": {
+      "part.1.avg": 0.000072671946,
+      "part.1.max": 0.00042563,
+      "part.1.min": 0.000042627,
+      "part.2.avg": 0.00009384220400000007,
+      "part.2.max": 0.001286097,
+      "part.2.min": 0.000047986
+    },
+    "Nim": {
+      "part.1.avg": 0.000309820612,
+      "part.1.max": 0.000891548,
+      "part.1.min": 0.000217958,
+      "part.2.avg": 0.006001787626,
+      "part.2.max": 0.015706643,
+      "part.2.min": 0.004353526
+    },
+    "Python": {
+      "part.1.avg": 0.0004916372299194336,
+      "part.1.max": 0.0012853145599365234,
+      "part.1.min": 0.0003917217254638672,
+      "part.2.avg": 0.0008194093704223632,
+      "part.2.max": 0.001768350601196289,
+      "part.2.min": 0.0006651878356933594
+    }
+  },
+  "numRuns": 500
+}
\ No newline at end of file
diff --git a/challenges/2021/01-sonarSweep/benchmark.txt b/challenges/2021/01-sonarSweep/benchmark.txt
deleted file mode 100644
index 211b1fc..0000000
--- a/challenges/2021/01-sonarSweep/benchmark.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-Day 1 (Sonar Sweep) benchmark
-
-Dir: challenges/2021/01-sonarSweep
-Runs per part: 200
---------------------------------------------------------------------------------
-Golang
-
-benchmark.part.1.avg: 0.000056 seconds
-benchmark.part.1.min: 0.000041 seconds
-benchmark.part.1.max: 0.000226 seconds
-benchmark.part.2.avg: 0.000075 seconds
-benchmark.part.2.min: 0.000045 seconds
-benchmark.part.2.max: 0.001601 seconds
---------------------------------------------------------------------------------
-Nim
-
-benchmark.part.1.avg: 0.000360 seconds
-benchmark.part.1.min: 0.000246 seconds
-benchmark.part.1.max: 0.000950 seconds
-benchmark.part.2.avg: 0.006874 seconds
-benchmark.part.2.min: 0.004758 seconds
-benchmark.part.2.max: 0.014110 seconds
---------------------------------------------------------------------------------
-Python
-
-benchmark.part.1.avg: 0.000569 seconds
-benchmark.part.1.min: 0.000486 seconds
-benchmark.part.1.max: 0.001104 seconds
-benchmark.part.2.avg: 0.000948 seconds
-benchmark.part.2.min: 0.000823 seconds
-benchmark.part.2.max: 0.001922 seconds
---------------------------------------------------------------------------------
diff --git a/challenges/2021/02-dive/benchmark.json b/challenges/2021/02-dive/benchmark.json
new file mode 100644
index 0000000..1081cc9
--- /dev/null
+++ b/challenges/2021/02-dive/benchmark.json
@@ -0,0 +1,23 @@
+{
+  "day": 2,
+  "dir": "challenges/2021/02-dive",
+  "implementations": {
+    "Golang": {
+      "part.1.avg": 0.0001582621379999999,
+      "part.1.max": 0.001349068,
+      "part.1.min": 0.000111979,
+      "part.2.avg": 0.00015449909000000007,
+      "part.2.max": 0.000617994,
+      "part.2.min": 0.000109917
+    },
+    "Python": {
+      "part.1.avg": 0.000686305046081543,
+      "part.1.max": 0.003078460693359375,
+      "part.1.min": 0.000522613525390625,
+      "part.2.avg": 0.0007208962440490722,
+      "part.2.max": 0.00462651252746582,
+      "part.2.min": 0.0005438327789306641
+    }
+  },
+  "numRuns": 500
+}
\ No newline at end of file
diff --git a/challenges/2021/02-dive/benchmark.txt b/challenges/2021/02-dive/benchmark.txt
deleted file mode 100644
index dab02f3..0000000
--- a/challenges/2021/02-dive/benchmark.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-Day 2 (Dive) benchmark
-
-Dir: challenges/2021/02-dive
-Runs per part: 500
---------------------------------------------------------------------------------
-Golang
-
-benchmark.part.1.avg: 0.000200 seconds
-benchmark.part.1.min: 0.000111 seconds
-benchmark.part.1.max: 0.004197 seconds
-benchmark.part.2.avg: 0.000204 seconds
-benchmark.part.2.min: 0.000112 seconds
-benchmark.part.2.max: 0.003940 seconds
---------------------------------------------------------------------------------
-Python
-
-benchmark.part.1.avg: 0.000851 seconds
-benchmark.part.1.min: 0.000526 seconds
-benchmark.part.1.max: 0.007797 seconds
-benchmark.part.2.avg: 0.000865 seconds
-benchmark.part.2.min: 0.000549 seconds
-benchmark.part.2.max: 0.004964 seconds
---------------------------------------------------------------------------------
diff --git a/challenges/2021/03-binaryDiagnostic/benchmark.json b/challenges/2021/03-binaryDiagnostic/benchmark.json
new file mode 100644
index 0000000..f34df19
--- /dev/null
+++ b/challenges/2021/03-binaryDiagnostic/benchmark.json
@@ -0,0 +1,23 @@
+{
+  "day": 3,
+  "dir": "challenges/2021/03-binaryDiagnostic",
+  "implementations": {
+    "Nim": {
+      "part.1.avg": 0.00021173980600000034,
+      "part.1.max": 0.000570226,
+      "part.1.min": 0.000157414,
+      "part.2.avg": 0.00018946362799999994,
+      "part.2.max": 0.000354414,
+      "part.2.min": 0.000147001
+    },
+    "Python": {
+      "part.1.avg": 0.0023609061241149903,
+      "part.1.max": 0.0048906803131103516,
+      "part.1.min": 0.0017006397247314453,
+      "part.2.avg": 0.0017261476516723633,
+      "part.2.max": 0.003656625747680664,
+      "part.2.min": 0.0012204647064208984
+    }
+  },
+  "numRuns": 500
+}
\ No newline at end of file