diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index 0cfbdcd024..42da598716 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -268,6 +268,22 @@ func prepare(ctx *cli.Context) {
 			ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(4096))
 		}
 	}
+	// If we're running a known preset, log it for convenience.
+	if ctx.GlobalIsSet(utils.LegacyTestnetFlag.Name) {
+		log.Info("Starting Geth on Ropsten testnet...")
+		log.Warn("The --testnet flag is ambiguous! Please specify one of --goerli, --rinkeby, or --ropsten.")
+		log.Warn("The generic --testnet flag is deprecated and will be removed in the future!")
+	} else if ctx.GlobalIsSet(utils.RopstenFlag.Name) {
+		log.Info("Starting Geth on Ropsten testnet...")
+	} else if ctx.GlobalIsSet(utils.RinkebyFlag.Name) {
+		log.Info("Starting Geth on Rinkeby testnet...")
+	} else if ctx.GlobalIsSet(utils.GoerliFlag.Name) {
+		log.Info("Starting Geth on Görli testnet...")
+	} else if ctx.GlobalIsSet(utils.DeveloperFlag.Name) {
+		log.Info("Starting Geth in ephemeral dev mode...")
+	} else if !ctx.GlobalIsSet(utils.NetworkIdFlag.Name) {
+		log.Info("Starting Geth on Ethereum mainnet...")
+	}
 	// If we're running a light client on any network, drop the cache to some meaningfully low amount
 	if ctx.GlobalString(utils.SyncModeFlag.Name) == "light" && !ctx.GlobalIsSet(utils.CacheFlag.Name) {
 		log.Info("Dropping default light client cache", "provided", ctx.GlobalInt(utils.CacheFlag.Name), "updated", 128)
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index f5896a1783..3bb65a64ed 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -1449,11 +1449,6 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
 	CheckExclusive(ctx, LightLegacyServFlag, LightServeFlag, SyncModeFlag, "light")
 	CheckExclusive(ctx, DeveloperFlag, ExternalSignerFlag) // Can't use both ephemeral unlocked and external signer
 
-	if ctx.GlobalIsSet(LegacyTestnetFlag.Name) {
-		log.Warn("The --testnet flag is ambiguous! Please specify one of --goerli, --rinkeby, or --ropsten.")
-		log.Warn("The generic --testnet flag is deprecated and will be removed in the future!")
-	}
-
 	var ks *keystore.KeyStore
 	if keystores := stack.AccountManager().Backends(keystore.KeyStoreType); len(keystores) > 0 {
 		ks = keystores[0].(*keystore.KeyStore)