Hi Caryl, Im not sure if this is your 1rst M. or not, but do follow your training plan- you want to feel good knocking out a 20m long run soon & incorporate hill work (treadmill if needed-temps were good-cool/misty start but I wore a tank/skorts/gloves-warm finish. There is rolling hills but not bad, the 2m. long hill is a hill but not as bad as the reviews-just get in the zone. My PR before Big sur was a 4:04 & I believe I came in @ 4:17 which was 17 min. ahead of my projected (they say add .30 min. to your PR) so I was pleased! Its super fun-the sites/entertainment was fantastic the whole way. Do take your phone for a couple epic pictures(I took a great one as I turned around to a sea of runners along the cliffs/ocean), just dont waist time if your trying to hit a good time. Dont carry hydration-they have plenty of aid stations-check out the site if they have gels(cant remember) Just have a great time-super fun one which went by really quickly. Actually my profile picture is..cont..