How to create a book title like this?

Question

This is Roger Penrose' book The Road to Reality's title

Currently my document begins like this,

    \documentclass{report}
    \usepackage{bm}
    \usepackage{xcolor}
    \usepackage{varwidth}
    \usepackage{array}
    \usepackage{geometry}
    \usepackage[pdftex,bookmarks=true]{hyperref}
    \usepackage{pdfpages}
    \usepackage{amsmath}
    \usepackage{amssymb}
    \usepackage{graphicx}
    \usepackage{amsthm}
    \usepackage{tikz-cd}
    \usetikzlibrary{cd}
    \usepackage{tikz}
    \usepackage{appendix}
    \usepackage{eso-pic}
    \usetikzlibrary{positioning}
    \usepackage[explicit]{titlesec}
    \RequirePackage{fix-cm}

    \definecolor{bluegreen}{rgb}{-.2,.4,0.6}

    \newcommand\semihuge{\@setfontsize\semihuge{18.72}{20.38}}

    \titleformat{\chapter}[display]
        {\normalfont\huge}
        {\hspace*{-60pt}\thechapter.~#1}
        {-10pt}
        {\hspace*{-110pt}\rule{\dimexpr\textwidth+20pt\relax}{0pt}}
    \titleformat{name=\chapter,numberless}[display]%conents
        {\normalfont\bfseries\huge}
        {\hspace*{175pt}#1}
        {-12pt}
        {\hspace*{-110pt}\rule{\dimexpr\textwidth+30pt\relax}{0pt}}
        \titlespacing*{\chapter}{0pt}{0pt}{30pt}


    \geometry{
    top=20mm,
    total={145mm,230mm}
    }
    \hypersetup{
        colorlinks=true,
        linkcolor=bluegreen,
        filecolor=magenta,
        urlcolor=cyan,
        pdftitle={Sharelatex Example},
        bookmarks=true,
    }
    \tikzset{>=stealth}

    \newcommand\BackgroundPic{
        \put(0,0){
            \parbox[b][\paperheight]{\paperwidth}{%
                \vfill
                \centering
                \includegraphics[width=\paperwidth,height=\paperheight]{BackGroundPDF.pdf}
                \vfill
            }}}




    \begin{document}

    \begin{titlepage}
    \end{titlepage}
    \pagenumbering{roman}

    \title{\Huge\textsc{The Road to Reality}}
    {}
    \date{}

    \maketitle
    \newpage


    \tableofcontents
    \newpage

    \clearpage
    \pagenumbering{arabic}
\end{document}

Answer 1

Interletter space is defaulted to \theLetterSpace, but can be changed with optional argument to \spaceout. Additional inter-word space is defined by \theWordSpace. The rest is just using \textsc, etc.

\documentclass{article}
\def\theLetterSpace{0.5pt}
\def\theWordSpace{2\LocalLetterSpace}
\newlength\LocalLetterSpace
\newcommand\spaceout[2][\theLetterSpace]{%
  \setlength\LocalLetterSpace{#1}\expandafter\spaceouthelpA#2 \relax\relax}
\def\spaceouthelpA#1 #2\relax{%
  \spaceouthelpB#1\relax\relax%
  \ifx\relax#2\else\ \kern\theWordSpace\spaceouthelpA#2\relax\fi
}
\def\spaceouthelpB#1#2\relax{%
  #1%
  \ifx\relax#2\else
    \kern\LocalLetterSpace\spaceouthelpB#2\relax%
  \fi
}
\begin{document}
\thispagestyle{empty}
\vspace*{1.5in}
{\centering
\textsc{\Large\spaceout[5pt]{The Road to Reality}}

\hrulefill\par}
\end{document}