diff --git a/front/src/applications/operationalStudies/components/MacroEditor/osrdToNge.ts b/front/src/applications/operationalStudies/components/MacroEditor/osrdToNge.ts
index 02c50c521cb..4a7eeb816b3 100644
--- a/front/src/applications/operationalStudies/components/MacroEditor/osrdToNge.ts
+++ b/front/src/applications/operationalStudies/components/MacroEditor/osrdToNge.ts
@@ -302,16 +302,37 @@ export const loadAndIndexNge = async (
 const getNgeTrainruns = (state: MacroEditorState, labels: LabelDto[]) =>
   state.trainSchedules
     .filter((trainSchedule) => trainSchedule.path.length >= 2)
-    .map((trainSchedule) => ({
-      id: trainSchedule.id,
-      name: trainSchedule.train_name,
-      categoryId: DEFAULT_TRAINRUN_CATEGORY.id,
-      frequencyId: DEFAULT_TRAINRUN_FREQUENCY.id,
-      trainrunTimeCategoryId: DEFAULT_TRAINRUN_TIME_CATEGORY.id,
-      labelIds: (trainSchedule.labels || []).map((l) =>
-        labels.findIndex((e) => e.label === l && e.labelGroupId === TRAINRUN_LABEL_GROUP.id)
-      ),
-    }));
+    .map((trainSchedule) => {
+      // NGE trainrun frequency is stored as OSRD labels ('frequency::30' or 'frequency::120')
+      let trainrunFrequency: TrainrunFrequency | undefined;
+      if (trainSchedule.labels) {
+        trainSchedule.labels.forEach((label) => {
+          if (label.includes('frequency')) {
+            const frequency = parseInt(label.split('::')[1], 10);
+            const trainrunFrequencyFound = DEFAULT_TRAINRUN_FREQUENCIES.find(
+              (freq) => freq.frequency === frequency
+            );
+            if (
+              trainrunFrequencyFound &&
+              (!trainrunFrequency || trainrunFrequencyFound.frequency < trainrunFrequency.frequency)
+            ) {
+              trainrunFrequency = trainrunFrequencyFound;
+            }
+          }
+        });
+      }
+
+      return {
+        id: trainSchedule.id,
+        name: trainSchedule.train_name,
+        categoryId: DEFAULT_TRAINRUN_CATEGORY.id,
+        frequencyId: trainrunFrequency?.id || DEFAULT_TRAINRUN_FREQUENCY.id,
+        trainrunTimeCategoryId: DEFAULT_TRAINRUN_TIME_CATEGORY.id,
+        labelIds: (trainSchedule.labels || []).map((l) =>
+          labels.findIndex((e) => e.label === l && e.labelGroupId === TRAINRUN_LABEL_GROUP.id)
+        ),
+      };
+    });
 
 /**
  * Translate the train schedule in NGE "trainrunSection" & "nodes".
@@ -494,7 +515,7 @@ export const getNgeDto = (state: MacroEditorState): NetzgrafikDto => {
     metadata: {
       netzgrafikColors: [],
       trainrunCategories: [DEFAULT_TRAINRUN_CATEGORY],
-      trainrunFrequencies: [DEFAULT_TRAINRUN_FREQUENCY],
+      trainrunFrequencies: DEFAULT_TRAINRUN_FREQUENCIES,
       trainrunTimeCategories: [DEFAULT_TRAINRUN_TIME_CATEGORY],
     },
     trainruns: getNgeTrainruns(state, labels),