Bridges
11 bridge sites for 11 of 20 testnets, each checked against the chain's own docs. They open in a new tab; RouteDust does not quote or run them.
Base Sepolia1 bridgeETH both ways between Ethereum Sepolia and Base Sepolia over Base's canonical bridge; Base's docs list only third-party bridge sites. Deposits take a few minutes; a withdrawal is proved on Sepolia and finalised after the challenge period (five days since Base's Beryl upgrade, seven before).
OP Sepolia1 bridgeETH both ways between Ethereum Sepolia and OP Sepolia over the canonical bridge; Optimism retired its own bridge page. A withdrawal is proved and then finalised; Optimism's docs say the wait is shorter on test networks than mainnet's seven days.
Arbitrum Sepolia1 bridgeETH and tokens both ways between Ethereum Sepolia and Arbitrum Sepolia; the testnets show up once your wallet is on Sepolia. A withdrawal is claimed on Sepolia, usually within an hour on this testnet.
Polygon Amoy1 bridgePOL and the Portal's listed tokens between Ethereum Sepolia and Amoy; switch the Portal to testnet first. The Portal's own estimate is about 22 minutes into Amoy and about 90 minutes back.
Unichain Sepolia1 bridgeETH both ways between Ethereum Sepolia and Unichain Sepolia over the canonical bridge, as listed in Unichain's docs. A withdrawal is proved on Sepolia and finalised after the OP Stack challenge period.
World Chain Sepolia1 bridgeDeposit and withdraw between Ethereum Sepolia and World Chain Sepolia, run by Alchemy for World Chain. The page says deposits land within seconds and withdrawals can take up to 13 days.
ETH both ways between Ethereum Sepolia and GIWA. Deposits arrive in a few minutes; withdrawals are proved after about two hours and finalised after a challenge period of about seven days.
Withdrawing to Ethereum Sepolia is a three-step rollup withdrawal: start it on GIWA, prove it on Sepolia once a dispute game exists (up to about two hours), then finalise it after the challenge period of about seven days. Activity can start it and sign both Sepolia steps when they are due; GIWA's own bridge does the same.
Linea Sepolia1 bridgeThe only bridge Linea supports on testnet: turn on Show Test Networks in its settings. ETH takes about 20 minutes into Linea; the way back takes 2 to 12 hours and a claim on Sepolia.
Ink Sepolia1 bridgeETH both ways between Ethereum Sepolia and Ink Sepolia over the canonical bridge, as listed in Ink's docs (Ink's own bridge page now serves mainnet only). A withdrawal is proved on Sepolia and finalised after the OP Stack challenge period.
Plume Testnet1 bridgePlume Testnet settles on Ethereum Sepolia through Arbitrum's stack; Plume's docs send testnet users to Arbitrum's bridge for the move between the two. Plume does not document how long a withdrawal takes.
Injective Testnet1 bridgeInjective's own bridge from Ethereum Sepolia onto the Injective testnet (injective-888, the chain behind this EVM network), linked from Injective's testnet Hub. Timing is not documented.
These testnets had no bridge UI of their own at the last check. Where Circle CCTP runs, USDC still moves through Swap → Bridge.
ArcCCTP
MonadCCTP
FujiCCTP
SonicCCTP
SeiCCTP
CronosCCTP
PlasmaCCTP
X LayerCCTP