From the Organizer
Come out for summer fun at the Pleasant Valley Pool. Enjoy a refreshing pool swim and run with our Swim/5K Aquathlon or skip the water and stay dry with a 5K fun run! In the afternoon, we'll once again be holding our dog swim, when the pool will be only for a dogs only swim time!
Proceeds directly support the Pleasant Valley Pool in Chantilly! We've also partnered up with two great non-profit charity partners which you can also donate to. The local Western Fairfax Christian Ministries Food Pantry, which was formed in 1987 by members of 12 Chantilly and Centreville churches, WFCM provides food and financial support to reduce hunger and the risk of homelessness among residents of western Fairfax County. Our second charity partner is the Major Lucas Legacy Foundation. The Major Lucas Gruenther Legacy Foundation was founded in 2015 to bestow scholarships to Americans for the advancement of educational goals and self development thereby strengthening and benefiting the community at large through individual enhancement.
Aquathlon Swim/5K includes:
- An awesome event shirt
- A refreshing swim in the Pleasant Valley Pool (125m snake swim) followed by a scenic 5K fun run through the Cub Run neighborhood and bike trails
- Post event water and recovery snacks
- Online result submission (you submit your own finish time, we will be performing best effort timing as well)
5K Entry includes:
- An awesome event shirt
- A scenic 5K fun run through the Cub Run neighborhood and bike trails
- Post run/walk recovery snacks
- Online result submission (you submit your own finish time, we will be performing best effort timing as well)
5K Virtual Entry includes:
- An awesome event shirt mailed to you
- Run on your own turf
- Online result submission (you submit your own finish time)
Dog swim includes:
- An optional shirt
- Entry to the annual afternoon dog swim at the pool
- Pictures at the event
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
81°
Typical Low
60°
Chance of Rain
28%
Based on US Climate Normals data from Washington Dc Dulles Ap, 3 mi from the venue.
Host City
About Chantilly, VA
City Elevation
362 ft
Nearest Airport
IAD
Washington Dulles International Airport · 5 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Pleasant Valley 5K Run/Walk, Aquathlon Challenge, and Dog Swim, put it on the calendar, and turn “someday” into a start date.
81
Days to train
- Race
- Pleasant Valley 5K Run/Walk, Aquathlon Challenge, and Dog Swim
- Date
- September 12, 2026
- Location
- 4347 Cub Run Road, Chantilly, VA
Coming Up
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From Endurance Grid
About These Sports
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
SwimRun
A continuous race alternating open-water swimming and running across a series of segments.
Frequently Asked Questions (FAQs)
- What is the Pleasant Valley 5K Run/Walk, Aquathlon Challenge, and Dog Swim?
- Pleasant Valley 5K Run/Walk, Aquathlon Challenge, and Dog Swim is a running race held in Chantilly, Virginia on September 12, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the Pleasant Valley 5K Run/Walk, Aquathlon Challenge, and Dog Swim?
- Saturday, September 12, 2026 in Chantilly, Virginia at 4347 Cub Run Road. Check the event page for exact start times and wave schedules.
- How do I register for the Pleasant Valley 5K Run/Walk, Aquathlon Challenge, and Dog Swim?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
Pleasant Valley 5K Run/Walk, Aquathlon Challenge, and Dog Swim
Sep 12, 2026