diff --git a/app/src/test/kotlin/com/maggom/app/event/MarathonEventQueryRepositoryTest.kt b/app/src/test/kotlin/com/maggom/app/event/MarathonEventQueryRepositoryTest.kt
index 8c4645f..28d95ba 100644
--- a/app/src/test/kotlin/com/maggom/app/event/MarathonEventQueryRepositoryTest.kt
+++ b/app/src/test/kotlin/com/maggom/app/event/MarathonEventQueryRepositoryTest.kt
@@ -57,7 +57,7 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("OPEN 상태 + 지역 일치 + regEndDate 미래 - 반환")
     fun open_status_matching_region_future_reg_end_date_returns_event() {
         // given
-        save(status = MarathonEventStatus.OPEN, region = "수도권", regEndDate = now.plusDays(7))
+        save(status = MarathonEventStatus.OPEN, region = "서울특별시 마포구", regEndDate = now.plusDays(7))
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권"))
@@ -70,7 +70,7 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("UPCOMING 상태 + 지역 일치 - 반환")
     fun upcoming_status_matching_region_returns_event() {
         // given
-        save(status = MarathonEventStatus.UPCOMING, region = "수도권", regEndDate = now.plusDays(7))
+        save(status = MarathonEventStatus.UPCOMING, region = "경기도 성남시", regEndDate = now.plusDays(7))
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권"))
@@ -83,7 +83,7 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("CLOSED 상태 - 제외")
     fun closed_status_excludes_event() {
         // given
-        save(status = MarathonEventStatus.CLOSED, region = "수도권", regEndDate = now.plusDays(7))
+        save(status = MarathonEventStatus.CLOSED, region = "서울특별시 강남구", regEndDate = now.plusDays(7))
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권"))
@@ -96,7 +96,7 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("지역 불일치 - 제외")
     fun mismatched_region_excludes_event() {
         // given
-        save(status = MarathonEventStatus.OPEN, region = "충청권", regEndDate = now.plusDays(7))
+        save(status = MarathonEventStatus.OPEN, region = "충청북도 청주시", regEndDate = now.plusDays(7))
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권"))
@@ -109,7 +109,7 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("regEndDate가 과거이면 제외")
     fun past_reg_end_date_excludes_event() {
         // given
-        save(status = MarathonEventStatus.OPEN, region = "수도권", regEndDate = now.minusDays(1))
+        save(status = MarathonEventStatus.OPEN, region = "서울특별시 마포구", regEndDate = now.minusDays(1))
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권"))
@@ -122,7 +122,7 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("regEndDate가 null이면 포함")
     fun null_reg_end_date_includes_event() {
         // given
-        save(status = MarathonEventStatus.OPEN, region = "수도권", regEndDate = null)
+        save(status = MarathonEventStatus.OPEN, region = "인천광역시 남동구", regEndDate = null)
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권"))
@@ -135,7 +135,7 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("여러 지역 중 하나라도 일치하면 반환")
     fun at_least_one_matching_region_returns_event() {
         // given
-        save(status = MarathonEventStatus.OPEN, region = "충청권", regEndDate = now.plusDays(7))
+        save(status = MarathonEventStatus.OPEN, region = "충청북도 청주시", regEndDate = now.plusDays(7))
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권", "충청권"))
@@ -148,9 +148,9 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("OPEN 이벤트는 regEndDate 오름차순 정렬")
     fun open_events_sorted_by_reg_end_date_ascending() {
         // given
-        save(status = MarathonEventStatus.OPEN, region = "수도권", regEndDate = now.plusDays(10))
-        save(status = MarathonEventStatus.OPEN, region = "수도권", regEndDate = now.plusDays(3))
-        save(status = MarathonEventStatus.OPEN, region = "수도권", regEndDate = now.plusDays(7))
+        save(status = MarathonEventStatus.OPEN, region = "서울특별시 마포구", regEndDate = now.plusDays(10))
+        save(status = MarathonEventStatus.OPEN, region = "경기도 성남시", regEndDate = now.plusDays(3))
+        save(status = MarathonEventStatus.OPEN, region = "인천광역시 연수구", regEndDate = now.plusDays(7))
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권"))
@@ -165,8 +165,8 @@ class MarathonEventQueryRepositoryTest {
     @DisplayName("OPEN이 UPCOMING보다 먼저 정렬")
     fun open_events_sorted_before_upcoming_events() {
         // given
-        save(status = MarathonEventStatus.UPCOMING, region = "수도권", regEndDate = now.plusDays(10))
-        save(status = MarathonEventStatus.OPEN, region = "수도권", regEndDate = now.plusDays(5))
+        save(status = MarathonEventStatus.UPCOMING, region = "서울특별시 송파구", regEndDate = now.plusDays(10))
+        save(status = MarathonEventStatus.OPEN, region = "서울특별시 마포구", regEndDate = now.plusDays(5))
 
         // when
         val results = repository.findOpenByRegions(listOf("수도권"))
diff --git a/event/src/main/kotlin/com/maggom/event/adapter/out/persistence/MarathonEventQueryRepository.kt b/event/src/main/kotlin/com/maggom/event/adapter/out/persistence/MarathonEventQueryRepository.kt
index 2b10a98..3f4e6f9 100644
--- a/event/src/main/kotlin/com/maggom/event/adapter/out/persistence/MarathonEventQueryRepository.kt
+++ b/event/src/main/kotlin/com/maggom/event/adapter/out/persistence/MarathonEventQueryRepository.kt
@@ -1,6 +1,8 @@
 package com.maggom.event.adapter.out.persistence
 
 import com.maggom.event.domain.MarathonEventStatus
+import com.maggom.event.domain.RegionGroup
+import com.querydsl.core.BooleanBuilder
 import com.querydsl.core.types.dsl.Expressions
 import com.querydsl.jpa.impl.JPAQueryFactory
 import org.springframework.stereotype.Repository
@@ -24,11 +26,16 @@ class MarathonEventQueryRepository(
             .`when`(event.status.eq(MarathonEventStatus.OPEN)).then(event.regEndDate)
             .otherwise(event.regStartDate)
 
+        val prefixes = regions.flatMap { RegionGroup.toPrefixes(it) }
+        val regionPredicate = prefixes.fold(BooleanBuilder()) { builder, prefix ->
+            builder.or(event.region.startsWith(prefix))
+        }
+
         return queryFactory
             .selectFrom(event)
             .where(
                 event.status.`in`(MarathonEventStatus.OPEN, MarathonEventStatus.UPCOMING),
-                event.region.`in`(regions),
+                regionPredicate,
                 event.regEndDate.isNull.or(event.regEndDate.gt(now)),
             )
             .orderBy(
diff --git a/event/src/main/kotlin/com/maggom/event/domain/RegionGroup.kt b/event/src/main/kotlin/com/maggom/event/domain/RegionGroup.kt
new file mode 100644
index 0000000..9bcbaaa
--- /dev/null
+++ b/event/src/main/kotlin/com/maggom/event/domain/RegionGroup.kt
@@ -0,0 +1,15 @@
+package com.maggom.event.domain
+
+object RegionGroup {
+
+    private val PREFIXES: Map<String, List<String>> = mapOf(
+        "수도권" to listOf("서울", "경기도", "인천"),
+        "충청권" to listOf("충청북도", "충청남도", "대전", "세종"),
+        "경상권" to listOf("경상북도", "경상남도", "대구", "부산", "울산"),
+        "전라권" to listOf("전라북도", "전라남도", "전북특별자치도", "광주"),
+        "강원권" to listOf("강원도", "강원특별자치도"),
+        "제주권" to listOf("제주"),
+    )
+
+    fun toPrefixes(regionGroup: String): List<String> = PREFIXES[regionGroup] ?: listOf(regionGroup)
+}