Catan Longest Road Rules: Branches, Loops & Ties
Catan’s Longest Road needs at least five connected road pieces and is worth two victory points. Count a single continuous route through your network, rather than every road you own. A tied challenger does not take the card from its qualifying holder. A settlement that interrupts a road requires a fresh count before deciding who owns the award.
Researched rules explanation · Checked September 12, 2026. This guide covers the standard base game, using the publisher’s classic English Almanac and current base-game FAQ. Seafarers ships and Cities & Knights pieces have separate rules. Examples are original illustrations, not recorded play sessions. How we check our guides.
On this page: How to count · Branches and loops · Settlement interruptions · Ties and transfers · Points and victory · Dispute checklist
Count one continuous route
Trace a connected route using your own road pieces. Count each physical piece once; do not go back over a piece to collect another branch. Your own settlements and cities allow the route to continue, while another player’s settlement or city prevents a connection through that intersection.
A useful method is to identify possible endpoints, trace the candidate route with a finger, and state its length aloud. Repeat for the alternatives before comparing players. Starting at the end of the most visually prominent branch can miss a longer connection between two other ends.
- Separate disconnected parts of your network.
- Inspect each possible route through a junction; leave unused branches out of that count.
- For a loop, check a trace that uses its pieces without repeating one.
- Keep the largest valid count, then apply the five-piece minimum.
Worked examples: a branch is not an extra scoring arm
The following are original simplified layouts. They assume no opposing building interrupts the connections and that the stated arms do not reconnect elsewhere. The count describes one route, not the total investment in the network.
| Layout | Road pieces placed | Longest count | Reason |
|---|---|---|---|
| Three arms meeting at one junction: lengths 2, 3 and 4 | 9 | 7 | Trace the 4-piece arm and 3-piece arm. Adding the third arm would require retracing. |
| A loop around one hex, with no tail | 6 | 6 | All six pieces form the loop; turning corners does not reduce the count. |
| That six-piece loop with a two-piece tail at one junction | 8 | 8 | Start at the tail’s outer end, trace the tail and loop, and end at their junction. |
In the three-arm example, extending the two-piece arm to three still leaves the longest count at seven: the best two arms are four and three. Extending the four-piece arm to five changes the count to eight. This illustrates why “I built one more road” and “my longest route grew by one” can have different answers.
The loop-with-tail example revisits a junction, but uses no physical road twice. It does not license counting a short branch by travelling out and back over the same piece. More complicated loops need their own trace; do not assume that every connected road automatically contributes.
What happens when a settlement interrupts the road?
An opposing settlement on a legal intersection stops your count through that location. Keep the road pieces on the board and assess the surviving connections separately. The settlement must satisfy normal construction rules; owning an adjacent road alone does not make any chosen intersection a legal building site.
For example, a seven-piece line split into lengths four and three now has a longest count of four, unless an alternate route connects around the interruption. The player still owns seven pieces, but neither remaining line qualifies for Longest Road. A different network with a bypass can produce a different result.
Your own settlement has a different effect: it does not interrupt your count. Check whose piece occupies the intersection before measuring the two sides as separate routes.
The official base-game FAQ also distinguishes counting from further construction. An interrupted network can still be extended from your own existing roads; you cannot use another player’s settlement as the connection for a new road beyond it.
Use the current holder’s status before awarding a tie
After an interruption, compare every player’s longest surviving count. The holder retains the card if still tied for the qualifying longest road. If the former holder falls behind, a tie between other players leaves the award unclaimed. This distinction prevents the inaccurate shortcut that every tie after a break removes the card.
| Blue held the card before the change | Blue’s count | Orange’s count | White’s count | Award now |
|---|---|---|---|---|
| Blue remains tied for the lead | 6 | 6 | 4 | Blue keeps it |
| One challenger has the clear lead | 4 | 6 | 5 | Orange receives it |
| Other players tie above the former holder | 4 | 6 | 6 | Set the card aside |
| Nobody meets the minimum | 3 | 4 | 3 | Set the card aside |
In the third example, Orange can claim the unowned award by extending the qualifying route from six to seven while White remains at six. If Blue instead matches a holder’s six during an ordinary building turn, matching alone does not transfer the card.
The two points follow the card
When the award moves, its old owner loses two points and its new owner gains two. If the card is set aside, no player receives those award points. Holding the longest count is therefore a changeable scoring position rather than a permanent building.
Catan’s standard victory condition still requires at least ten points on your own turn. Receiving the award during someone else’s turn is not a separate exception that immediately ends the game. Our Catan overview explains the wider scoring system.
Editorial planning example: If your plan depends on keeping this award, inspect legal settlement openings and the length of the nearest challenger before spending on an extension. The extra road must change a useful count or protect a connection. This is a decision check, not a guaranteed winning sequence.
A short checklist for settling a dispute
- Agree which edition and expansion rules apply.
- Trace each candidate route without counting a road piece twice.
- Check opposing buildings and any alternate connection.
- Record each player’s longest count, not their total road pieces.
- Identify whether the current holder still shares a qualifying lead.
- Transfer, retain or set aside the card, then update its points.
Sources and further reading
- CATAN: classic English rules and Almanac, Longest Road section, printed page 9.
- CATAN: current base-game FAQ, Longest Road and Roads entries.
- Catan game guide — game facts, wider rules, strategy and expansion relationships.
- Browse other focused rules explanations.
Sources checked September 12, 2026. Numeric layouts and award tables are original teaching examples. They illustrate the cited rules and do not reproduce publisher board illustrations.