Why does a swap sometimes route through three or more tokens instead of a direct pair

05 September 2026

A swap routes through multiple tokens when no direct liquidity exists between the asset you send and the asset you want to receive. The exchange finds a path through intermediate tokens - often stablecoins or widely traded coins - to complete the trade.

This happens because liquidity pools are not connected to every possible pair. A pool that trades token A for token B is a separate pool from one that trades token B for token C. If you want to swap token A for token C and no A‑C pool exists, the system must pass through B. The same logic extends to three or more hops: A to B, B to C, C to D.

Why direct pairs are rare

Most liquidity on decentralized exchanges concentrates in a few major pairs. Stablecoins like USDC or USDT pair with nearly everything. Wrapped native tokens (WETH, WBNB) also serve as common hubs. A token that launched yesterday will almost certainly not have a direct pool with every other token. Even established tokens may lack direct pairs if trading volume is low.

The exchange does not create pairs on demand. It uses whatever pools are available on the underlying networks. If the only route from token X to token Y goes through a stablecoin and then a wrapped native token, the swap will take that path.

How the route is chosen

When you submit a swap, the exchange's system scans available liquidity across the chains involved. It calculates the best price after accounting for each hop's fee and slippage. A three-hop route can sometimes give a better net result than a two-hop route if the two-hop path has thin liquidity or high fees.

The system does not care about the number of hops. It cares about the final amount you receive. A route with three intermediate tokens may deliver more than a route with one intermediate token if the single-hop pool is shallow or if the trading fee on that pool is unusually high.

Real example

You want to swap a small‑cap token on Ethereum for a small‑cap token on Polygon. No direct pair exists on either chain. The exchange might route:

• Ethereum small‑cap → USDC (on Ethereum)
• USDC (on Ethereum) → USDC (on Polygon) via a cross‑chain liquidity bridge
• USDC (on Polygon) → Polygon small‑cap

That is two token hops plus a cross‑chain transfer. The USDC step is the liquidity hub that makes the trade possible.

Risks and trade‑offs

More hops mean more transaction fees. Each swap on a blockchain costs gas. Each cross‑chain transfer also costs gas and may introduce a delay. The exchange will only choose a longer route if the price improvement outweighs the extra cost.

Slippage also compounds. Every hop exposes you to price movement between the time the swap starts and the time it finishes. A three‑hop route has three points where slippage can occur. Setting a lower slippage tolerance reduces this risk but may cause the swap to fail if prices shift.

When you see a multi‑hop route

If the exchange shows you a route with three or more tokens, it means the direct market does not exist or is too expensive. You can cancel the swap and try a different pair of tokens, or you can accept the route. The exchange will not invent a direct pair that does not exist.

For a broader explanation of how tokens move between chains without a central account, see the hub page Swapping crypto across chains. That page covers the overall process, including how the exchange matches your deposit to your order and why a return address is required.

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