National Capital 20 Miler and Janet Braunstein 5 Miler
National Capital 20 Miler and Janet Braunstein 5 Miler logo

National Capital 20 Miler and Janet Braunstein 5 Miler

Potomac, Maryland, United States
Oct 03, 2026
Running

About this race

The National Capital 20 Miler is Washington, DC’s premier fall marathon tune-up race. Taking place on the C&O Towpath, the race offers runners a flat, fast out-and-back course with water and nutrition support at regular intervals. Runners may choose the 20 Miler or 5 Miler option. All runners receive race swag. 

Members of DC Road Runners receive $15 off the price of the 20 Miler and $5 off the price of the 5 Miler. Make sure you are logged into the same RunSignUp account that you used for your membership to receive the discount.  

Janet Braunstein 5 Miler Awards

  • Overall Male and Female: 1st Place: $15, 2nd Place: $10, 3rd Place: $5

National Capital 20 Miler Awards

  • Overall Male and Female: 1st Place: $150, 2nd Place: $75, 3rd Place: $50
  • Masters, Overall Male and Overall Female: $50 each
  • We will have age group awards three deep. (19 and under, 20–29, 30–39, 40–49, 50–59, 60–69, and 70 and over)

Join fellow runners on October 3, 2026 for the National Capital 20 Miler and Janet Braunstein 5 Miler. It's a fantastic 32.2K, 8K featuring a flat and fast course in Potomac.

Pick your distance

Running

National Capital 20 Miler

Oct 03, 2026 32.2K 7:00 AM
$65.00
Open

Janet Braunstein 5 Miler

Oct 03, 2026 8K 7:20 AM
$35.00
Open

Weather Overview

These values represent the 1-year monthly averages for October in Potomac.

Temp (°C)
Minimum temperature (monthly average) 6.6° / Maximum temperature (monthly average) 18.2°
Feels Like (°C)
Minimum feels like (with wind chill; monthly average) 1.8° / Maximum feels like (with wind chill; monthly average) 18.2°
Wind (km/h)
Average wind speed (monthly average)
33.9
Precipitation (mm)
Average precipitation (monthly average)
5.2mm

About Potomac

National Capital 20 Miler and Janet Braunstein 5 Miler takes place in Potomac, Maryland, United States. The local timezone is America/New_York.

Reviews

Done this event?

If you've participated in this event, share your experience with other runners

Find upcoming events by distance:

Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.

Nearby Events