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Race Dates

2018: Saturday, October 20, 2018
2017: Saturday, October 21, 2017

Course Information

Profile: Mostly Flat
Type: Loop
Surface: Road/Pavement
Certified?: Yes

Race Day Weather

Mean Temp.: 56°F (13°C)
Average High: 66°F (18°C)
Average Low: 46° F (7°C)

Historical Weather

PR Score & Course Score

PR Score: 99.11
Course Score: 99.61

Race Size

2017: 177 Finishers
2016: 251 Finishers
2015: 218 Finishers

BQ Percentages

2018: N/A
2017: 14.7%
2016: 11.2%

Miscellaneous Information

Pace Groups?: No

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Course Description

The very flat loop Monster Mash Marathon course starts and finishes at the Dover International Speedway. The race will start inside on the Monster Mile track and finish outside of the track in front of the giant statue "Miles the Monster." The course runs outside the Monster Mile Stadium on the rural roads of Dover, DE.

Marathon Rankings

The Monster Mash Marathon was the 281st largest marathon in the U.S. last year and was the 236th largest in 2016.

Last year 14.7% of finishers qualified for the Boston Marathon and 11.2% of runners qualified for Boston in 2016.

This gives the Monster Mash Marathon the 110th highest percentage of Boston Marathon qualifiers in the U.S. last year and the 165th highest percentage in 2016.

Its Course Score of 99.61 ranks it as the 77th fastest marathon course in the U.S. and the 1st fastest course in Delaware.

The typical race time temperature and humidity levels are slightly above the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Monster Mash Marathon a PR Score of 99.11. This PR Score ranks it as the 125th fastest marathon in the U.S. and the 2nd fastest in Delaware.

Learn more about PR Scores and Course Scores on the FAQ page.

Elevation Chart

Max Elevation: 40 feet (12m)
Min Elevation: 3 feet (0m)


Recent Monster Mash Marathon Reviews

5 Stars from 2 Reviews
View all Reviews

review of 2016 Monster Mash Marathon.   

5 / 5 Stars


Great course and race organization.

There was not much offered for post race refreshments.

Race Tips

Flat course that is conducive to steady pace strategy.

Logistical Tips (Hotels, Restaurants, Parking, Discounts, etc.)

review of 2016 Monster Mash Marathon.   

5 / 5 Stars


Good shirt, good medal, flat course. Post-race amenities were definitely lacking, but there were plenty of water stations on the course.

Race Tips

Bring your own gels, they only provided them at two stations.

Logistical Tips (Hotels, Restaurants, Parking, Discounts, etc.)

Take advantage of the shower at the YMCA afterwards, it was very nice.

Finish Time Equivalent

If you ran the Monster Mash Marathon in 4:17:00, what would your time in the Boston Marathon be?

See how your race times would compare on other marathon courses using the Marathon Time Converter Tool.