diff --git a/backend/src/main/java/org/sejongisc/backend/attendance/service/AttendanceService.java b/backend/src/main/java/org/sejongisc/backend/attendance/service/AttendanceService.java
index d0f80bfa..73449e60 100644
--- a/backend/src/main/java/org/sejongisc/backend/attendance/service/AttendanceService.java
+++ b/backend/src/main/java/org/sejongisc/backend/attendance/service/AttendanceService.java
@@ -15,6 +15,7 @@
 import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDate;
+import java.time.LocalDateTime;
 import java.time.LocalTime;
 import java.util.List;
 import java.util.UUID;
@@ -50,16 +51,17 @@ public AttendanceCheckInResponse checkInByRound(AttendanceCheckInRequest request
                 user.getName(), request.getRoundId(), round.getRoundDate());
 
         // 1. 라운드 시간 검증 - 통일된 로직
-        LocalDate checkDate = LocalDate.now();
-        LocalTime checkTime = LocalTime.now();
+        LocalDateTime now = LocalDateTime.now();
+        LocalDate checkDate = now.toLocalDate();
+        LocalTime checkTime = now.toLocalTime();
         LocalTime startTime = round.getStartTime();
         LocalTime endTime = round.getEndTime();
         LocalTime lateThreshold = startTime.plusMinutes(5);
 
         // 날짜 검증
         if (!checkDate.equals(round.getRoundDate())) {
-            log.warn("❌ 출석 날짜 불일치: 라운드ID={}, 사용자={}, 현재날짜={}, 라운드날짜={}",
-                    request.getRoundId(), user.getName(), checkDate, round.getRoundDate());
+            log.warn("❌ 출석 날짜 불일치: 라운드ID={}, 사용자={}, 현재시간={}, 라운드날짜={}",
+                    request.getRoundId(), user.getName(), now, round.getRoundDate());
             return AttendanceCheckInResponse.builder()
                     .roundId(request.getRoundId())
                     .success(false)
@@ -71,7 +73,7 @@ public AttendanceCheckInResponse checkInByRound(AttendanceCheckInRequest request
         boolean isWithinTimeWindow = !checkTime.isBefore(startTime) && checkTime.isBefore(endTime);
         if (!isWithinTimeWindow) {
             log.warn("❌ 출석 시간 초과: 라운드ID={}, 사용자={}, 현재시간={}, 시작={}, 종료={}",
-                    request.getRoundId(), user.getName(), checkTime, startTime, endTime);
+                    request.getRoundId(), user.getName(), now, startTime, endTime);
             return AttendanceCheckInResponse.builder()
                     .roundId(request.getRoundId())
                     .success(false)
@@ -79,8 +81,8 @@ public AttendanceCheckInResponse checkInByRound(AttendanceCheckInRequest request
                     .build();
         }
 
-        log.info("✅ 시간 검증 성공: 라운드ID={}, 사용자={}, 시간={}, 범위=[{}~{}]",
-                request.getRoundId(), user.getName(), checkTime, startTime, endTime);
+        log.info("✅ 시간 검증 성공: 라운드ID={}, 사용자={}, 현재시간={}, 범위=[{}~{}]",
+                request.getRoundId(), user.getName(), now, startTime, endTime);
 
         // 2. 기존 출석 기록 확인 (PENDING 제외하고 실제 체크인한 기록만 중복으로 취급)
         Attendance existingAttendance = attendanceRepository.findByAttendanceRound_RoundIdAndUser(request.getRoundId(), user)
diff --git a/backend/src/main/java/org/sejongisc/backend/attendance/service/AttendanceSessionService.java b/backend/src/main/java/org/sejongisc/backend/attendance/service/AttendanceSessionService.java
index 8a5f920a..4e54198a 100644
--- a/backend/src/main/java/org/sejongisc/backend/attendance/service/AttendanceSessionService.java
+++ b/backend/src/main/java/org/sejongisc/backend/attendance/service/AttendanceSessionService.java
@@ -270,7 +270,7 @@ private String generateRandomCode() {
     /**
      * AttendanceSession 엔티티를 Response DTO로 변환
      * - 기본 세션 정보: 제목, 기본 시작 시간, 출석 인정 시간, 보상 포인트
-     * - 위치 정보: location 객체 (lat, lng)
+     * - 위치 정보: location 객체 (lat, lng, radiusMeters)
      */
     private AttendanceSessionResponse convertToResponse(AttendanceSession session) {
         // 위치 정보 변환 (location이 존재하면 LocationInfo 객체 생성, 없으면 null)
@@ -279,6 +279,7 @@ private AttendanceSessionResponse convertToResponse(AttendanceSession session) {
             location = AttendanceSessionResponse.LocationInfo.builder()
                     .lat(session.getLocation().getLat())
                     .lng(session.getLocation().getLng())
+                    .radiusMeters(session.getLocation().getRadiusMeters())
                     .build();
         }