10k: Spain, Breitbach, Heymann
Spain wins this easily. Breitbach has run some good times but not at the level of Spain and doesn't have the experience either. Heymann is the only guy who at his best has run at the level of Spain, but he hasn't looked that impressive in outdoors and never has run particularly well at Nationals.
Steeple: Lang, Pecora, McCarthy
This race is going to be really interesting, with the 3rd, 4th and 8th place finishers from last year returning, plus three other guys that have run 9:01 or faster. There's a lot of speed in this race too, as Pecora and McCarthy have run 3:50, Davies has run 3:53, and Josh Guarino has a 3:52 and 1:53 to his name. In the steeple that speed doesn't always make a difference though, and I think Lang seems to really have the steeple nailed, and ran 9:00 for 4th last year at nationals, so I think he'll be able to hold of the speedier guys.
1500: Guarino, Schoch, Turlip
Nobody has been able to touch Guarino in the 1500/mile in the last two years, and I don't see any reason for this to change. Turlip's 3:45 is impressive, but unless someone takes the race out in 60/61s (which I suppose Turlip could do) I don't think he has the speed to beat everyone else in the race. Schoch has been running really well recently with a 1:50 last week, though Drew Clark also has run 1:50 and hasn't lost a race in a while, so he could be up there as well. I also have to say I think its a bit ridiculous Jackson Brainerd qualified for the second year in a row based on an altitude-converted time.
800: Scheetz, Guarino, Waterman
Guarino vs. Scheetz will be a pretty intense battle as they are two of the best runners in all of division 3 right now, but I think Scheetz just has too much speed (47 in the open 400) to lose unless he screws up tactically. I think Guarino will win the 15 easily enough that it won't take too much out of him, but enough for him to really make the hard move from a ways out that it would take to beat Scheetz. Waterman almost held beat Scheetz indoors when Scheetz was doubling back after the 4, so he's a good pick for third.
5000: Butzler, Spain, Salukombo
This is going to be an interesting race given that 5 of the top 7 entries are from guys who will be running it fresh, whereas usually most people are coming back from an earlier event for the 52. Butzler was the only guy who was close to being in Spain's league for the indoor 5k and I think it will be similar outdoors, but given that Butzler will be fresh and has a nasty kick (not to mention his epic leg speed), I think he'll get the win. Salukombo has looked real good this season and could be up there as well, though he hasn't done that well at nationals in the past (was last in the indoor mile final) so its hard to say. Could see Berube or really any of the other guys who ran an auto up there as well making things interesting, but I'm guessing people will be watching Spain and Butzler to see what they do.