Este es el mapa de la ruta que hago

<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://maps.google.com/maps?f=d&amp;source=s_d&amp;saddr=Manzanares+el+Real,+Espa%C3%B1a&amp;daddr=Ctra+de+Torrelaguna+a+El+Escorial%2FM-608&amp;hl=es&amp;geocode=FQ5ybQIdrgbF_ym53KiVTGVBDTEg3Ey-80ADBA%3BFeTdbQIdYEjG_w&amp;mra=me&amp;mrcr=0&amp;mrsp=1&amp;sz=11&amp;sll=40.75818,-3.856888&amp;sspn=0.265258,0.44014&amp;ie=UTF8&amp;ll=40.75818,-3.856888&amp;spn=0.265258,0.44014&amp;output=embed"></iframe><br /><small><a href="http://maps.google.com/maps?f=d&amp;source=embed&amp;saddr=Manzanares+el+Real,+Espa%C3%B1a&amp;daddr=Ctra+de+Torrelaguna+a+El+Escorial%2FM-608&amp;hl=es&amp;geocode=FQ5ybQIdrgbF_ym53KiVTGVBDTEg3Ey-80ADBA%3BFeTdbQIdYEjG_w&amp;mra=me&amp;mrcr=0&amp;mrsp=1&amp;sz=11&amp;sll=40.75818,-3.856888&amp;sspn=0.265258,0.44014&amp;ie=UTF8&amp;ll=40.75818,-3.856888&amp;spn=0.265258,0.44014" style="color:#0000FF;text-align:left">Ver mapa más grande</a></small>