The state of Lousiana only appears to have one single Marathon in January.

Louisiana Marathon , 23,2M, 13,1M ,6M, 5K, January 12th-14th Baton Rouge.

Therefore what will follow is a list of all the Marathons held during April in any US state.

April 1st

1. Dust Bowl Marathon Series Day 5,
2. Hoppy Easter
3. I Ran Flagship Marathons Brunei

April 4th

• Super Awesome Missouri Edition

April 7th

1. Amarillo Marathon
2. American River 50 Mile Endurance Run
3. Andrew Jackson Marathon
4. Charlottesville Marathon
5. Circular Logic Marathon
6. Eisenhover Marathon
7. I Ran Flagship Marathons Bulgaria
8. Irving Marathon
9. Rockin K Trail Marathons
10. Squak Mountain Trail Run
11. Trailbreaker Marathon
12. Yukima River Canyon Marathon

April 8th

1. B&A Trail Marathon
2. Cape Cod Trail Race
3. Coffee Milk Marathon
4. GO! St Louis Marathon
5. ORRRC Marathon & Half Marathon
6. Runners Marathon of Reston
7. Super Awesome Illinois Edition
8. Trap Pond 50K

April 13th

• Mountain Man Memorial March

April 14th

1. All Out Beat the Heat
2. Davy Crockett Bear Chase
3. Deception Pass Marathon
4. Desert RATS Trail Running Festival Trail Marathon & 50K
5. Garden Spot Village Marathon
6. Hogeye Marathon
7. Lake Lowell Marathon
8. Martian Invasion of Races
9. Newport Rhode Races
10. NJ Ultra Festival
11. Spring Eagle Trail Run

April 15th

1. Athens Marathon
2. BHM 26,2
3. Grizzly Peak Trail Run
4. I Ran Flagship Marathons Burkina Faso
5. ORRC Vernonia Marathon
6. Riverboat Marathon Series Day 1
7. Western Maryland Rail Trail Marathon

April 16th

1. Boston Marathon
2. Riverboat Marathon Series Day 2

April 18th

• Riverboat Marathon Series Day 3

April 19th

• Riverboat Marathon Series Day 4

April 20th

• Riverboat Marathon Series Day 5

April 21st

1. Blue Ridge Marathon
2. Brian Mickelsen Marathon
3. Cedro Peak
4. Flint Hills 50 & Marathon
5. Free State Trail Run
6. Garmin Marathon in the Land of Oz
7. I Ran Flagship Marathons Burundi
8. Riverboat Marathon Series Day 6
9. Salt Lake City Marathon
10. Sping BQ.2 Marathon
11. Wenatchee Marathon

April 22nd

1. Bend Marathon
2. Coastal Delaware Running Festival
3. Gettysburg Festival of Races
4. Gettysburg North South Marathon
5. Glass City Marathon
6. Ocean Drive Marathon
7. Whidbey Island Marathon

April 26th

• I Ran Marathons Battle of Flowers Paintbrush

April 27th

• I Ran Flagship Marathons Battle of Flowers Indian Blanket

April 28th

1. Brainerd Jaycees Run for the Lakes Marathon
2. Buffalo National River Trail Runs
3. Frisco Railroad Run
4. Golden Driller Marathon
5. Hurt the Dirt at Luton Park
6. I Ran Marathons Battle of Flowers Winecup
7. Illinois Marathon
8. Kentucky Derby Festival Marathon
9. North Face Endurance Challenge Washington D.C
10. Palmetto Expedition
11. REVEL Mt Charleston Marathon
12. River Rat Marathon
13. Rock n’ Roll Marathon
14. SBY Marathon
15. Western Pacific Marathon

April 29th

1. Backside Trail Marathon
2. Big Sur Intrnational Marathon
3. Bloom to Brew Marathon
4. Delaware Marathon  Running Festival
5. Eugene Marathon
6. I Ran Flagship Marathons Cabo Verde
7. I Ran Marathons Battle of Flowers Antelope Horns
8. New Jersey Marathon
9. Oklahoma City Memorial Marathon
10. Oshkosh Marathon
11. Pro Football Hall of Fame Marathon
12. RENO 5000 Race#1 Downtown River Run
13. RUN CRANDIC
14. San Louis Obispo Marathon
15. Tacoma City Marathon
16. Trail Marathon

April 30

• I Ran Marathons Battle of Flowers Bluebonnet