Cape Cod Frozen Fatass 50K, 7 a.m. Jan. 12, Sandy Neck Beach, Barnstable, 774- 266-2017, FREE!
Frozen Pilgrim, 5 miles, 10 a.m. Jan. 27, Boys & Girls Club of Plymouth, 9 Resnik Road, Plymouth, southshorerace.com.
Martha’s Vineyard 20-Miler, 11 a.m. Feb. 16, Vineyard Haven Steamship Authority Terminal, 99 Water St., Tisbury, mv20miler.com.
Hyannis 10K, 10 a.m. Feb. 23, Resort & Conference Center at Hyannis, Scudder Avenue, hyannismarathon.com.
Hyannis Marathon, Marathon Relay, Half Marathon, 10 a.m. Feb. 24, Resort & Conference Center at Hyannis, Scudder Avenue, hyannismarathon.com.
Hyannis Double Dip Challenge, run or walk Hyannis 10K on Feb. 23, then Hyannis Half Marathon or Hyannis Marathon on Feb. 24, special finisher medal, hyannismarathon.com.
Shamrock Shuffle 5K, 11 a.m. March 9, Michael Aselton Memorial Park, Ocean and South streets, Hyannis, southshorerace.com.
Good Run for Good Works, 5K/10K, 9 a.m. March 31, Barnstable High School, 744 W. main St., Hyannis, runreg.com/good-run-for-good-works.
Seagull Six Spring Classic, 5.74 miles, 11 a.m. March 31, Woods Hole Community Hall, 68 Water St., falmouthtrackclub.org/races/seagull-six-spring-classic/.
Cape Cod Trail Race, 5K, 10K, half marathon, marathon, 50K, April 7, Frances A. Crane Wildlife Management Area, 754 Nathan Ellis Highway (Route 151), East Falmouth, capecodtrailrace.com.
Cape Cod Beer Race to the Pint, 5K and 10K, 3 p.m. April 27, Cape Cod Beer, 1336 Phinney’s Lane, Hyannis, runreg.com/cape-cod-beer-race-to-the-pint.
Ruck4HIT (Heroes in Transition) Relay Race, May 3-4 (36-hour race), Courtyard Restaurant & Pub, Bourne (ends in Mashpee), https://southshoreracemanagement.redpodium.com/ruck-4-hit-relay-race-2019.
Cinco De Mayo Kiwanis 5K, 9 a.m. May 5, A.D. Makepeace Company, 150 Tihonet Road, Wareham, southshorerace.com/cinco-de-mayo-kiwanis-5k--may-52019.html.
Liam Maguire’s Irish Pub Almost 5 Miler, 9:30 a.m. May 5, Town Hall Square, Falmouth, pcbpubrun.com.
Ragnar Cape Cod Relay, May 10-11, Hull to Smuggler’s Beach, runragnar.com/event-detail/relay/capecod#overview.
Martha’s Vineyard Marathon & Half Marathon & 2-Person Half Marathon Relay, May 18, marthasvineyardmarathon.com.
Wellfleet Sprint Triathlon, 8 a.m. June 1, Long Pond, wellfleetsprinttriathlon.org.
Harvest Triathlon, 7:30 a.m. June 8, 158 Tihonet Road, Wareham, runsignup.com/harvestreg.
Hyannis Triathlon l and ll, June 15 and Sept. 7, Craigville Beach, Craigville Beach Road, neeevents.com/hyannis-sprint-triathlon.
Falmouth Flag Day 5K, 10 a.m. June 16, 263 Grand Ave., Falmouth, falmouthflagday5k.org.
SOS Cape Cod Triathlon, June 22, Wellfleet, http://sos-capecod.com.