Patapsco Valley 50K
Oct 24Baltimore, MD50K, 25K
38 mi from Fall Backyard Burn Trail Run - Lake Fairfax, 1 week after Fall Backyard Burn Trail Run - Lake Fairfax, registration open
Aid stations, cutoffs and pacing in one plan, with the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planLocated in Reston, VA, this suburban park has a beautiful lake, huge open fields, pavilions, and an awesome trail network. Our course is almost entirely singletrack except for the prologue. There is about 300 feet of elevation change on the 5 mile course. While not overly technical, there are some rocks and roots to negotiate along most of the course.
Race Date: Sunday October 18, 2026
Course Length: 5.1 miles (1 lap) OR 10 miles (2 laps)
Charity partnership
During registration, you will have an opportunity to support a local non-profit Homestretch. The goal of the charity partnership is to first and foremost to raise awareness of the services Homestretch provides to families in our area. In addition, we hope to raise funds that will directly support their efforts. Please consider making a donation when you register.
Registration opens
Dec 28, 2025
Tier 1 ends
Jan 1, 2026
Tier 2 ends
Jul 18, 2026
Tier 3 ends
Sep 18, 2026
Tier 4 ends
Oct 17, 2026
Registration closes
Oct 18, 2026
Race day
Oct 18, 2026
Tier 5 ends
Oct 18, 2026
10 Mile
Tier 4, then $65 from Oct 18, 2026
$62.50
5 Mile
Tier 4, then $60 from Oct 18, 2026
$55
Registration openings and major changes, like a new date or a cancellation.
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
Oct 24Baltimore, MD50K, 25K
38 mi from Fall Backyard Burn Trail Run - Lake Fairfax, 1 week after Fall Backyard Burn Trail Run - Lake Fairfax, registration open
Nov 7Germantown, MDHalf Marathon, 10K +1
16 mi from Fall Backyard Burn Trail Run - Lake Fairfax, 3 weeks after Fall Backyard Burn Trail Run - Lake Fairfax, registration open
Oct 17Bentonville, VA24 hr, 12 hr +2
52 mi from Fall Backyard Burn Trail Run - Lake Fairfax, the same weekend as Fall Backyard Burn Trail Run - Lake Fairfax, registration open
Nov 7Montgomery Village, MD50 mi
17 mi from Fall Backyard Burn Trail Run - Lake Fairfax, 3 weeks after Fall Backyard Burn Trail Run - Lake Fairfax, registration open
Straight-line distance
Oct 9Abingdon, VA100 mi
Oct 10Lynchburg, VAHalf Marathon, 5K
Oct 10Williamsburg, VA4 mi
Oct 10Montross, VA5K
Oct 10Max Meadows, VA100 mi, 50 mi +2
Oct 17Bentonville, VA24 hr, 12 hr +2
Oct 17Bedford, VA24 hr, 12 hr +1
Oct 17Powhatan, VA8 hr
Oct 17Elberon, VA5K
Oct 18Huddleston, VA25K, 10K
Oct 24Earlysville, VABackyard Ultra
Oct 24Crozet, VA10K, 5K
Apr 3, 2027Clifton, VA50 mi
Nov 7Germantown, MDHalf Marathon, 10K +1
Nov 7Montgomery Village, MD50 mi
Mar 6, 2027Clarksburg, MD8 hr
Mar 20, 2027Lorton, VABackyard Ultra
Dec 5Triangle, VA100 mi, 100K +1
Mar 6, 2027Triangle, VA50K, 25K
Jun 12, 2027Triangle, VA50 mi, 25 mi
Oct 11Mount Airy, MD8 hr, 4 hr +1
Nov 14Upper Marlboro, MD50K, 20K
Apr 24, 2027Knoxville, MD100 mi
Jun 5, 2027Knoxville, MD4.2 mi, 1 mi
Oct 9Circleville, WV50 mi, 50K +2
Oct 10Lewisburg, PA5K
Oct 10Mifflin, PA5K, 1 mi
Oct 11Flintstone, MD50K, 25K
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Build my planAre you the race director for Fall Backyard Burn Trail Run - Lake Fairfax?
Claim this race to manage registration, volunteers, and race day.