Boston buildup races: any big ones?

A couple I've run:

Boston Prep in Derry NH, 16 miles, late January:

http://www.gdtc.org/bostonprep/

Upton 15k, early April:

http://www.tri-valleyfrontrunners.com/Tune-Up/Tune-Up-announcement.htm

Jan 26, Derry NH: Boston Derry Prep (“Moderately Challenging”)

http://www.gdtc.org/bostonprep/

Feb 9, Lynn MA: Great Stew Chase 15k

http://www.stewchase.com/stewchaseroadrace/

March 2, Clinton MA: Stu’s 30k

https://racewire.com/register.php?id=3507

March 16, North Andover MA: Run to the Beach 30k

http://runthecircle.org/wordpress/?page_id=304

April 5, Upton MA: Boston Tune-Up 15k

http://www.tri-valleyfrontrunners.com/Tune-Up/Tune-Up-announcement.htm

Mar 30, Portsmouth NH: Eastern States 20 Miler

http://www.easternstates20mile.com/

There is a longish Tough Mudder in Baton Rouge in February.

In ME

Feb 6, 10-miler near Portland, Cape Elizabeth ME:

http://www.mainetrackclub.com/midwinterclassic.html

Mar 16, York Harbor Half:

http://www.running4free.com/RaceDetails.aspx?raceid=258

In CT, there is the Boston Buildup Series:

10K - 1st weekend Jan, Norwalk

15K - 3rd weekend Jan, Ridgefield

20K - 2nd weekend Feb, Fairfield

25K - 1st weekend Mar, Norwalk

http://www.clubct.org/Buildup/BBSked.html

In NH,

Feb 23, Half at the Hamptons:

http://www.locorunning.com/hamptonhalf/index.html

Mar 1, Mt. Sunapee, up/down race (4 miles):

http://www.newinterwild.com/index.php?doc=27_13

Mar 22, Winter Chiller 6 mi, Peterborough:

Contact: Monadnock Regional Milers 603-525-3502

ginger3502@myfairpoint.net

In RI:

Mar 22, Burlingame 5/10 mile trail race (among others):

https://sites.google.com/site/4thseasonraces/

Mar 29, Run the Resevoir 15k, North Scituate:

http://www.racesonline.com/index.cfm?fuseaction=public.race_detail&race_id=11596

fordhalfmarathon.com/

fuseaction=public.race_detail&race_id=11596

In MA:

Jan 5, Bourne (Cape Cod), 4.9 miler:

http://www.capecodroadrunners.com/

Feb 2, Cambridge, 5 miler:

http://runagainstcancer.org/supersunday/details/

Feb 15, Martha's Vineyard half:

http://www.mvbgclub.org/mv20miler/

Feb 16, Foxboro, Old Fashioned 10-miler

http://www.wampanoagroadrunners.org/oftm.html

Feb 23, Hyannis half:

http://www.hyannismarathon.com/hm.php

Feb 23, Amherst 10 miler:

http://sugarloafmac.org/calendar/cal_event.php?id=2576

Mar 1, Salem Black Cat 10 or 20 miler:

https://racewire.com/register.php?id=3548

Mar 16, New Bedford Half:

http://newbedfordhalfmarathon.com/

Miss any?