5 Best Marathons in Delaware | 2024-2025

From Rehoboth Beach to Wilmington to Bear to Delaware City, and more.

For marathon runners seeking Boston qualifying races in Delaware, the First State offers diverse courses from scenic coastal paths to historic canal routes.

This guide examines the best marathons in Delaware, providing essential details for both experienced runners and first-time marathoners.

Looking for a different state? Select one below:

What are the Best Marathons in Delaware?

Here are the best marathons in Delaware:

Rehoboth Beach Seashore Marathon

Rehoboth Beach | Dec 7, 2024

Course Type: Mostly Flat

Elevation Gain: 261 feet (79m)

Participants: 3,000

Price: $115-$220

The Rehoboth Beach Marathon stands as one of Delaware’s most notable Boston qualifying marathons, held each December along the Atlantic coast. The USATF-certified course begins at the Rehoboth Beach Bandstand, where runners gather in temperatures typically ranging from 35-45°F – optimal conditions for marathon performance. The route showcases Delaware’s coastal beauty, beginning with a flat stretch through downtown before entering Cape Henlopen State Park at mile 3. Participants experience the historic Junction & Breakwater Trail from miles 8-13, followed by the scenic Gordon’s Pond Wildlife Area boardwalk section. The final miles return runners to the beloved Rehoboth Beach boardwalk, where spectators gather year-round. Race support includes 15 aid stations with both Gatorade and water. It consistently sells out months in advance.

Coastal Delaware Running Festival

Rehoboth Beach | Apr 13, 2025

Course Type: Mostly Flat

Elevation Gain: 272 feet (82m)

Participants: 900 limit

Price: $130-$170

Spring marathons in Delaware peak with the Coastal Delaware Running Festival, typically occurring in April when coastal Delaware marathon training conditions reach their prime. The course strategically utilizes Delaware’s beach marathon terrain, starting at Tower Road Beach and incorporating significant portions of Cape Henlopen State Park. Runners navigate through the Gordon’s Pond trail system, past historic Lewes Beach, and along the Junction & Breakwater Trail before experiencing the vibrant Rehoboth Beach boardwalk section. With a 6 hour 45 minute time limit, the event caters to both competitive runners and those seeking a scenic spring marathon experience.

Delaware Marathon

Wilmington, DE | Apr 6, 2025

Course Type: Rolling Hills

Elevation Gain: 1025 feet (312m)

Participants: 1,000 limit

Price: $120.00

The Delaware Running Festival transforms Wilmington’s urban landscape into a marathon course each May, offering runners a unique blend of city streets and park paths. Starting at Tubman-Garrett Riverfront Park, this Brandywine marathon course takes participants through downtown Wilmington’s historic districts, along the Christina Riverfront, and through the scenic Brandywine Park. The route includes challenging sections through Rockford Park and rewarding descents along the Union Street corridor. The ample Delaware race support make this event accessible to runners of various abilities.

Mainly Marathons Independence Series Day 1

Bear, DE | Jun 4, 2025

Course Type: Tarmac, some trail

Elevation Gain: 624 feet (190m)

Price: $110-$155

The Delaware portion of the multi-state marathon challenge offers a distinctive format for dedicated distance runners. This unique addition to Delaware marathon events operates on a loop course format, typically featuring 2.6-mile circuits passing centralized aid stations. The format particularly suits participants attempting the Independence series running challenge of multiple marathons across different states. Race support includes extensive aid station access, relaxed time limits, and specialized amenities for multi-day runners. The event stands out among Delaware running events for its community atmosphere and support for streak runners.

Conquer The Canal Marathon

Delaware City, DE | May 17, 2025

Course Type: Flat

Price: $133.50

The historic Chesapeake & Delaware Canal provides the backdrop for this unique canal race series Delaware event. The point-to-point marathon course follows the canal running trails from Delaware City to Chesapeake City, offering consistent water views and flat terrain ideal for maintaining steady pacing. The course includes aid stations strategically placed along the C&D Canal running routes and historical markers noting significant canal features. The 7-hour 45-minute time limit accommodates slower runners, while the historic setting provides a distinct marathon experience you won’t forget.

Essential Training Considerations for Delaware Marathons

Success in Delaware marathons requires specific preparation strategies:

• Adapt to local weather patterns through Delaware running weather exposure
• Utilize Delaware running stores for gear and local advice
• Join Delaware running clubs for group training opportunities
• Practice on similar terrain using Delaware running routes
• Review Delaware race reviews from previous participants
• Consider Delaware race volunteering to learn courses

Conclusion

Delaware’s marathon calendar offers distinct experiences for every type of runner, from Boston hopefuls to first-time marathoners. Each event provides comprehensive Delaware race support, clear course marking, and professional timing services. Advance planning is essential, particularly for popular events requiring Delaware marathon accommodation. Whether targeting a personal record or completing a first marathon, Delaware’s 2024 racing season provides multiple opportunities to achieve running goals.

Row Brown

Row Brown is the founder of Refresh Row. He is a keen marathon runner, his favorite being the London Marathon. He’s now set himself the mission of Running the Entire Length of Spain, which is scheduled for late 2024.