You might be looking for the Dancer::Request method path. You get at a Dancer::Request object via request.

# in app.pl

hook before_template_render => sub {
  my $tokens = shift;

  # Make the path available in every template.
  $tokens->{current_route} = request->path;
};

# in views/layouts/main.tt
<p>Route: <% current_route %></p>
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Anything more elaborate than what I did, you'll probably want to create a custom helper.