Did a search and found this. Looks like your best bet is full-body workouts w/lighter weights and higher reps.
I think a routine of squats, seated leg curl for hams, calf raises,
dumbell bench press,
dumbell shoulder press, one-arm dumbell rows or lat pulldowns, bicep curls, tricep pushdowns and hyperextensions would be a good circuit. 2 sets of each would be 18 total sets, leaving time for abs, too.
* Avoid weight training legwork on days before races, speedwork sessions, or long runs.
* Make sure that your muscles get adequate rest between sessions by lifting every other day or a minimum of three days per week. Don't forget to get enough sleep.
* Emphasize lighter weights and more repetitions (12-18 reps) as opposed to lifting the maximum weight you can handle a few times.
* Plan your routine so that you begin with the legs first, upper body second, and mid-section last. On a similar note, focus on the exercising the large muscle groups first followed by the smaller groups. For example, when working the upper body, start with the chest and lats and conclude with the biceps and triceps.
You can find more at this site:
www.marathontraining.com/marathon/m_wt.html
But it's worth it 
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