According to the Nuget website, you can access Elmah using the url /elmah
.
https://www.nuget.org/packages/Elmah.MVC
Painless integration of ELMAH functionality into ASP.NET MVC Application. Just drop the package inside you ASP.NET MVC application and access /elmah URL. It will also install global HandleError filter, that guarantees all unhandled errors is logged (even if customerError turned "On").