diff --git a/src/lib/features/release-plans/release-plan-milestone.ts b/src/lib/features/release-plans/release-plan-milestone.ts
index 9d83ece8bb..ad1a47e66a 100644
--- a/src/lib/features/release-plans/release-plan-milestone.ts
+++ b/src/lib/features/release-plans/release-plan-milestone.ts
@@ -6,5 +6,6 @@ export interface ReleasePlanMilestone {
     sortOrder: number;
     releasePlanDefinitionId: string;
     startedAt?: Date;
+    transitionCondition?: object;
     strategies?: ReleasePlanMilestoneStrategy[];
 }
diff --git a/src/lib/features/release-plans/release-plan-read-model.ts b/src/lib/features/release-plans/release-plan-read-model.ts
index 322926efe6..79e7e463c1 100644
--- a/src/lib/features/release-plans/release-plan-read-model.ts
+++ b/src/lib/features/release-plans/release-plan-read-model.ts
@@ -18,6 +18,8 @@ const selectColumns = [
     'mi.id AS milestoneId',
     'mi.name AS milestoneName',
     'mi.sort_order AS milestoneSortOrder',
+    'mi.started_at AS milestoneStartedAt',
+    'mp.transition_condition AS milestoneTransitionCondition',
     'ms.id AS strategyId',
     'ms.sort_order AS strategySortOrder',
     'ms.title AS strategyTitle',
@@ -46,6 +48,8 @@ const processReleasePlanRows = (templateRows): ReleasePlan[] =>
                 milestoneId,
                 milestoneName,
                 milestoneSortOrder,
+                milestoneStartedAt,
+                milestoneTransitionCondition,
                 strategyId,
                 strategySortOrder,
                 strategyTitle,
@@ -87,6 +91,8 @@ const processReleasePlanRows = (templateRows): ReleasePlan[] =>
                     id: milestoneId,
                     name: milestoneName,
                     sortOrder: milestoneSortOrder,
+                    startedAt: milestoneStartedAt,
+                    transitionCondition: milestoneTransitionCondition,
                     strategies: [],
                     releasePlanDefinitionId: planId,
                 };
@@ -152,6 +158,11 @@ export class ReleasePlanReadModel implements IReleasePlanReadModel {
                 'mi.release_plan_definition_id',
                 'rpd.id',
             )
+            .leftJoin(
+                'milestone_progressions AS mp',
+                'mp.source_milestone',
+                'mi.id',
+            )
             .leftJoin('milestone_strategies AS ms', 'ms.milestone_id', 'mi.id')
             .leftJoin(
                 'milestone_strategy_segments AS mss',
diff --git a/src/lib/openapi/spec/release-plan-milestone-schema.ts b/src/lib/openapi/spec/release-plan-milestone-schema.ts
index 185366deba..a228af5053 100644
--- a/src/lib/openapi/spec/release-plan-milestone-schema.ts
+++ b/src/lib/openapi/spec/release-plan-milestone-schema.ts
@@ -35,6 +35,20 @@ export const releasePlanMilestoneSchema = {
                 'The ID of the release plan/template that this milestone belongs to.',
             example: '01JB9GGTGQYEQ9D40R17T3YVW2',
         },
+        startedAt: {
+            type: 'string',
+            format: 'date-time',
+            description: 'The date and time when the milestone was started.',
+            example: '2024-01-01T00:00:00.000Z',
+            nullable: true,
+        },
+        transitionCondition: {
+            type: 'object',
+            description:
+                'The transition condition for the next automated milestone progression.',
+            additionalProperties: true,
+            nullable: true,
+        },
         strategies: {
             type: 'array',
             description: