RunRace USA › New Mexico › Lost Almost Triathlon
Lost Almost Triathlon
Los Alamos, New Mexico · Sunday, September 13, 2026 · 20K, 5K
Official race page & registration ↗Lost Almost Triathlon takes place on Sunday, September 13, 2026 in Los Alamos, New Mexico. The race offers 2 distances: 20K, 5K. For anyone travelling in, Santa Fe is about 22 miles away and Albuquerque is about 58 miles away.
It is one of 31 races on the New Mexico calendar that September. The 20K is rare in New Mexico: only one race on the calendar offers it. At $50, entry sits above the $30 median for a New Mexico half marathon.
- Date
- Sunday, September 13, 2026
- Location
- Los Alamos, New Mexico
- Distances
- 20K, 5K
- Entry fee
- from $50
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Los Alamos: check in Sep 12, out Sep 14.
Common questions
When is Lost Almost Triathlon?
Lost Almost Triathlon is scheduled for Sunday, September 13, 2026.
Where is Lost Almost Triathlon held?
Lost Almost Triathlon is held in Los Alamos, New Mexico. It is about 22 miles from Santa Fe and 58 miles from Albuquerque.
What distances does Lost Almost Triathlon offer?
The listed distances are 20K, 5K.
How much does Lost Almost Triathlon cost?
Entry is listed from $50. Check the official race page for the current price, which usually rises closer to race day.
How do I register for Lost Almost Triathlon?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
More races nearby
- Sep 12Los Alamos NJROTC Extreme 5k and Fun RunLos Alamos, NM
- Sep 13Corrales Ditch RunCorrales, NM
- Sep 13NM CHIPS AND SALSA HALF MARATHON + 10K, 5K RUN OR WALK AND KIDS KAlbuquerque, NM
- Sep 123rd Annual End DWI and support Rehoboth June Camp! 5k, 10k, 1-mile Kid's run, and 1-mile walk/runChurch Rock, NM
- Sep 12Oak Flats Picnic TrailsTijeres, NM
See every race on the New Mexico calendar, New Mexico Half Marathons, New Mexico 5Ks, or use the Race Finder for maps and filters.