USARunningTrail (provisional)21K · 21.1 km / 13.1 mi

Mount Diablo trail run — 21K

Location to be confirmed · USA

No future date listed

About Mount Diablo trail run — 21K

Mount Diablo trail run — 21K is a running event in United States. Recorded disciplines include 21K. The listed surface is trail (provisional). No future date is currently listed on ATHRECS. The ATHRECS archive includes editions from 2017. This describes the editions recorded here, not the event's founding date or complete history.

21K results · Sat, 3 Jun 2017

Recorded performances from Mount Diablo trail run — 21K in United States. This is a partial results archive; it does not represent the full field.

Paddy O Leary · 1:57:00 · Results: UTMB Index public profile (18 September 2026)

View recorded results

Athlete profiles

Explore some of the athletes with recorded results at Mount Diablo trail run — 21K.

Paddy O Leary

Dates, starts & entry

Times are local to the race. Select the entry route for your distance.

The next date has not been announced here. Check the race website for updates.

Location & race day

Listed venue / area

Location to be confirmedUSA

Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.

About the race

Historical course record. Trail classification is provisional, based on inclusion in the UTMB Index; course surface has not been independently verified. Actual course distances are retained separately from UTMB Index categories.