The Walk to Emmaus is a program put on by Upper Room Ministries. Upper Room promotes Spiritual Formation (i.e., contemplative spirituality), and if you want to understand the dynamics of Walk to Emmaus, then understanding the spirituality of Upper Room will help you:
“The Walk to Emmaus is an adaptation of the Roman Catholic Cursillo Movement, which originated in Spain in 1949.” from the Walk to Emmaus website
Walk to Emmaus is widely spread. It is estimated that over half a million persons have experienced a Walk to Emmaus weekend and today the Movement counts more than 300 communities distributed all over the United States as well as all over the world.1
Mantra Meditation is promoted at Upper Room Ministries also:
“Mantra — The word comes from Sanskrit. Its two-syllabus mean: man or mind and tra or deliverance. A mantra is sound vibration that is intended to deliver the mind from distractions and a focus on the material world. A mantra is repeated like a chant and has a spiritual effect associated with the physical vibration. A mantra can be as simple as one syllable ‘OM’ or as more complicated such as, ‘OM SRI RAM JAI RAM JAI JAI RAM’.” From the Upper Room website (now removed)
“The Walk to Emmaus is an adaptation of the Roman Catholic Cursillo Movement, which originated in Spain in 1949.”2
Tres Dias is an offshoot of the Cursillo Movement and should be avoided as well.
List of places that do Walk to Emmaus