The Firewater Ultra returns to Greenback, Tennessee on October 24th, featuring a variety of challenging distances along the East Lakeshore Trail near Tellico Reservoir. This event has been a staple in Tennessee for over a decade, with this being its twelfth consecutive year. Participants can choose from four main events: the Firewater 100K and 50K runs, as well as relay options and the newer Ruck race. The East Lakeshore Trail provides runners with scenic views of Tellico Reservoir, winding through diverse terrain that includes hills and flat stretches. The trail conditions are firm yet slightly soft underfoot, making it a runnable but challenging route for endurance athletes. On race morning, participants can expect to gather at the starting point on the southern end of the trail near Wildcat Pointe Trailhead (#10). Temperatures typically range from 12°C to 22°C with average humidity around 71%, and runners should be prepared for a chance of light rain. Firewater Ultra celebrates its rich tradition each year by honoring local conservation efforts through partnerships with The Watershed Association of the Tellico Reservoir (WATeR). Over eleven years, it has grown from being Tennessee's first trail-based ultra event to attracting hundreds of participants annually. For 2026, organizers are reintroducing soft hoodie sweatshirts for runners who register by October 16th. The Firewater Ultra offers a range of distances on its course: the grueling 100K run covering the entire East Lakeshore Trail out and back; the more moderate 50K that starts at the northern end, turning around mid-way before heading south to finish near Wildcat Pointe (#10). Additionally, there's a relay option for teams looking to share the distance equally or in halves. The newest addition is the Ruck race, which runs half of the 50K route back towards the finish line while carrying extra weight.
To register for the Firewater Ultra, visit https://ultrasignup.com/register.aspx?did=135681 where you can choose from multiple distance options starting at $80. Early bird discounts are available until September 24th. Bib pickup will take place on October 22nd and 23rd between 9am-7pm, with bib collection also possible on race morning starting at 5:30 am for those unable to attend the pre-race pick up sessions. Runners should meet at 203 East Coast Tellico Parkway in Greenback. Age requirements vary by distance but generally are open to anyone over 18 years old, with younger participants requiring parental approval and supervision on race day. All first-time runners are advised to arrive early for familiarization of the course layout. The Firewater Ultra will take place on October 24th near Tellico Reservoir in Greenback, Tennessee. This longstanding event remains significant due to its commitment to conservation efforts through WATeR partnerships and the scenic beauty along the trail system, making it a must-attend for serious runners looking to challenge themselves against stunning backdrops while supporting local environmental initiatives.
Races Offered
100K
Oct 24, 2026
straighten
Distance —
100K
terrain
Type —
Running
timer
08:00
sell
$135.00
50K - 2 Per Relay
Oct 24, 2026
straighten
Distance —
50K
terrain
Type —
Running
timer
08:30
sell
$130.00
50K Sunrise
Oct 24, 2026
straighten
Distance —
50K
terrain
Type —
Running
timer
08:30
sell
$100.00
25K Ruck
Oct 24, 2026
straighten
Distance —
25K
terrain
Type —
Running
timer
09:00
sell
$80.00
50K Sunset
Oct 24, 2026
straighten
Distance —
50K
terrain
Type —
Running
timer
14:30
sell
$100.00
Weather History
These values represent the 3-year monthly averages for October in Greenback.
thermostatTemperature
11.6° / 22.4°
wb_sunnyFeels like
10.0° / 20.9°
light_mode
Avg sunshine hours
9h 20m
water_drop
Avg rainfall
1.2 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
8.9 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (4.0)
humidity_mid
Humidity
71.3%
wb_twilight
Sunrise
07:44
nightlight
Sunset
19:00
About Greenback
Learn more about the host city, Greenback.
Greenback is a city in Loudon County, Tennessee, United States. Its population was at 1,102, according to the 2020 census. It is included in the Knoxville Metropolitan Statistical Area.
