DateExpected
Mid October 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
USO Building Pavilion, 302 S Highland Ave, Marfa, TX 79843
Marfa, Presidio County
Countdown
October
A flat-ish century out and back on Ranch Road 2810, with barely 850 m of climbing over 100 km. Fast legs and a gun start set the tone.
Key facts
01Gun start, so be on the line and ready at 09:00
02Turnaround is near mile 31, then you ride the same road back
03A single-speed entry is offered alongside the standard one
Create a free training plan for the MARFA 100 100 km
7-day free trial, no card required
The course
The route
Marfa
Distance100km
Total climb853m
StartElevation
0 kmDrag map to rotate99.5 km
Weather
Mid-October, Marfa
27°CTypical high
13°CTypical low
0°CColdest in 20 years
17%Days with rain
Highs around 27°C and lows around 13°C, but it has dropped to 0°C. Rain on 17% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
2025 results
Who finishes, and how
#RiderTimeAvg speed
01Ana Maria Hernandez02:54:4734.3 km/h
02Seiko Dejima03:31:3728.4 km/h
03Susie Edwinson03:34:0728.0 km/h
27
Women finishers
5:05:13
Median time
19.7 km/h
Median speed
Women · 2025 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
OrganiserMarfa 100 organizing team; BikeSignup lists City of Marfa as the race contact. Local coverage names Zeke Raney and Elizabeth Farrell as organizers.
Websitemarfa100.com
Instagram@marfa100k
Running since2010
Training
Training for the MARFA 100 100 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a MARFA 100 100 km plan targets
Typical sessions
100 km with 853 m of climbing
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Group rides for drafting and bunch-riding skills
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your MARFA 100 100 km plan.
7-day free trial, no card required.
More events in October in United States
Above the Clouds UltraExpected Early October 2027 · Salt Lake City→Angeles Crest 100 Mile Endurance RunSat, 2 Oct 2027 · Altadena→Bear Brook ClassicExpected Early October 2027 · Allenstown→DC PeaksExpected Early October 2027 · Salt Lake City→Grafton Gran FondoExpected Early October 2027 · Grafton→Lead Ore GravelExpected Early October 2027 · Galena→
