diff --git a/challenge/presentation/src/main/kotlin/com/ruleup/challenge/presentation/detail/viewmodel/ChallengeDetailViewModel.kt b/challenge/presentation/src/main/kotlin/com/ruleup/challenge/presentation/detail/viewmodel/ChallengeDetailViewModel.kt
index 4fd52f48..8476f14a 100644
--- a/challenge/presentation/src/main/kotlin/com/ruleup/challenge/presentation/detail/viewmodel/ChallengeDetailViewModel.kt
+++ b/challenge/presentation/src/main/kotlin/com/ruleup/challenge/presentation/detail/viewmodel/ChallengeDetailViewModel.kt
@@ -49,6 +49,8 @@ import com.ruleup.verification.domain.repository.VerificationRepository
 import com.ruleup.verification.domain.usecase.AgreeVerificationConsentUseCase
 import com.ruleup.verification.domain.usecase.CheckVerificationAccessUseCase
 import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.async
+import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.launch
 import java.io.IOException
 import java.time.YearMonth
@@ -484,14 +486,20 @@ class ChallengeDetailViewModel
                 dispatch(ChallengeDetailReducerEvent.Loading(challengeId))
                 runCatching { challengeRepository.getChallenge(challengeId) }
                     .onSuccess { detail ->
-                        // 셋업 요구사항은 실패해도(미구현/멤버 아님 등) 상세 렌더를 막지 않도록 흡수한다.
-                        val setup = runCatching { challengeRepository.getSetupInfo(challengeId) }.getOrNull()
-                        // 그룹 멤버는 방을 먼저 받아 둔다 — 상세만 먼저 그리면 참여 전 화면이 잠깐 떴다가 방 화면으로 바뀐다.
-                        val prefetchedRoom =
-                            if (detail.mode.isGroup && detail.myRole.isMember) {
-                                runCatching { roomRepository.getRoom(challengeId) }.getOrNull()
-                            } else {
-                                null
+                        val (setup, prefetchedRoom) =
+                            coroutineScope {
+                                // 셋업 요구사항은 실패해도(미구현/멤버 아님 등) 상세 렌더를 막지 않도록 흡수한다.
+                                val setup = async { runCatching { challengeRepository.getSetupInfo(challengeId) }.getOrNull() }
+                                // 그룹 멤버는 방을 먼저 받아 둔다 — 상세만 먼저 그리면 참여 전 화면이 잠깐 떴다가 방 화면으로 바뀐다.
+                                val room =
+                                    async {
+                                        if (detail.mode.isGroup && detail.myRole.isMember) {
+                                            runCatching { roomRepository.getRoom(challengeId) }.getOrNull()
+                                        } else {
+                                            null
+                                        }
+                                    }
+                                setup.await() to room.await()
                             }
                         dispatch(
                             ChallengeDetailReducerEvent.Loaded(
diff --git a/challenge/presentation/src/main/kotlin/com/ruleup/challenge/presentation/settings/viewmodel/ChallengeSettingsViewModel.kt b/challenge/presentation/src/main/kotlin/com/ruleup/challenge/presentation/settings/viewmodel/ChallengeSettingsViewModel.kt
index 3a7f5ee4..045a92e6 100644
--- a/challenge/presentation/src/main/kotlin/com/ruleup/challenge/presentation/settings/viewmodel/ChallengeSettingsViewModel.kt
+++ b/challenge/presentation/src/main/kotlin/com/ruleup/challenge/presentation/settings/viewmodel/ChallengeSettingsViewModel.kt
@@ -14,6 +14,8 @@ import com.ruleup.domain.helper.NavigationHelper
 import com.ruleup.ui.error.userFacingMessage
 import com.ruleup.ui.mvi.MviViewModel
 import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.async
+import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
@@ -239,15 +241,18 @@ class ChallengeSettingsViewModel
         ) {
             viewModelScope.launch {
                 dispatch(ChallengeSettingsReducerEvent.Loading(challengeId))
-                runCatching { challengeRepository.getSettings(challengeId) }
-                    .onSuccess { settings ->
-                        // 정원 하한 계산에 현재 인원이 필요한데 settings 응답에 없다.
+                runCatching {
+                    coroutineScope {
+                        // 정원 하한 계산에 현재 인원이 필요한데 settings 응답에 없다. 인원 조회 실패는 흡수한다.
                         val participants =
-                            runCatching { challengeRepository.getChallenge(challengeId).participantCount }.getOrNull()
-                        dispatch(ChallengeSettingsReducerEvent.Loaded(settings, participants, preserveEdits))
-                    }.onFailure {
-                        dispatch(ChallengeSettingsReducerEvent.Failed(it.userFacingMessage("설정을 불러오지 못했어요")))
+                            async { runCatching { challengeRepository.getChallenge(challengeId).participantCount }.getOrNull() }
+                        challengeRepository.getSettings(challengeId) to participants.await()
                     }
+                }.onSuccess { (settings, participants) ->
+                    dispatch(ChallengeSettingsReducerEvent.Loaded(settings, participants, preserveEdits))
+                }.onFailure {
+                    dispatch(ChallengeSettingsReducerEvent.Failed(it.userFacingMessage("설정을 불러오지 못했어요")))
+                }
             }
         }