Athlete

Sierra DeGroff

Runner

Sierra DeGroff is a Las Vegas-based ultrarunner. Her own racing résumé lists 2023 USATF 100-mile and 24-hour national titles, alongside a women’s course record at the 2026 Denali 135.

2023 titles: USATF 100-mile and 24-hour championListed on the athlete’s own résumé.Source

10 TUM reports · Published coverage below

Publication history

Coverage over time

10 editorial issues

Distinct issues per publication month. Each issue counts once.

Jul 2024Peak 2Nov 2026

Sponsor mentions, repeated links and polls are excluded. Credits within editorial items may count. Read the supporting timeline ↓

In The Ultra Minute

Newest first

July 27, 2026Published in TUM

DeGroff reflects on her June Denali 135 win

Sierra DeGroff reflected on choosing a race for enjoyment. Her June Denali 135 finish was 28:57:56, fourth overall and a reported women’s course best, separate from the July reflection.

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July 6, 2026Published in TUM

Mount to Coast releases Billy Yang’s Badwater film

Mount to Coast released the 35-minute Billy Yang film The Line - Badwater 135: From Hell To Heaven, following Kaylee Frederick, Sierra DeGroff and Meg Eckert. Film coverage does not establish a new race result, sponsorship or image reuse rights.

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July 11, 2025Published in TUM

Badwater’s 2025 women’s podium and double

TUM reported 43:42:21 and completion of the Western States–Badwater double at Badwater 2025.

Event date: 2025 · TUM publication: July 11, 2025

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June 6, 2025Published in TUM

Mountain Outpost’s Western States interviews

Discussed plans for Western States and Badwater, which TUM described as a week apart.

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May 2, 2025Published in TUM

DeGroff wins Waramaug’s women’s 100K

Sierra DeGroff won the women’s 2025 Lake Waramaug 100K in a reported 8 hours 18 minutes, second overall, while planning a Western States–Badwater double.

Event date: 2025 · TUM publication: May 2, 2025

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April 9, 2025Published in TUM

DeGroff wins and paces Mortimer

DeGroff won the 40K and then paced Mortimer for 60 miles.

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March 13, 2025Published in TUM

DeGroff on Miles and Manuscripts

Sierra DeGroff appeared on Miles and Manuscripts to discuss 100-mile racing, Badwater 135 training and her community runs. TUM recalled her earlier outright Across the Years 100K win.

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February 21, 2025Published in TUM

Springer wins the women’s USATF 100-mile title

Finished second woman in the 2025 USATF 100-mile championship in 17:41:22.

Event date: 2025 · TUM publication: February 21, 2025

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January 31, 2025Published in TUM

Jackpot 100-mile record ambitions and field

Pannu targeted the American 100-mile record at February 14,2025 Jackpot, recalling his 11:58:01 debut a year earlier. Dakota Jones also announced an attempt; Nathan Brown, Devon Yanko and Sierra DeGroff were listed in the field. Bitter’s 11:19:13 and Sorokin’s 10:51:39 were benchmarks, not results from this planned race.

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January 2, 2025Published in TUM

DeGroff’s inaugural Mount to Coast 100K win

TUM reported Sierra DeGroff winning the inaugural Mount to Coast 100K at Across the Years in 9:06:19. Her 2024 season achievements and lottery place for 2025 WesternStates are context, not results from one event or proof of a later start. The crossing-year event date is not guessed from January2 publication.

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Connections

June women’s winner and course best: 28:57:56; fourth overall

Denali 135

Sierra DeGroff reflected on choosing a race for enjoyment. Her June Denali 135 finish was 28:57:56, fourth overall and a reported women’s course best, separate from the July reflection.

Source

Named subject in Yang’s film

Billy Yang

Source

TUM reported 40K winner

Dam Good Run 40K

Sierra DeGroff won Dam Good Run 40K, then paced Peter Mortimer for 60 miles during his Arizona Monster 300 win.

Source

Paced Mortimer for 60 miles at Arizona Monster

Peter Mortimer

Sierra DeGroff won Dam Good Run 40K, then paced Peter Mortimer for 60 miles during his Arizona Monster 300 win.

Source

Sources & notes

Coverage details

2025 Waramaug 100K report: Women’s win · 8:18; second overallSourceHH:MMprecision and overall/gender positions remain distinct.Source
2025 USATF road 100-mile: Women’s second · 17:41:22Separate from the 100K and other Jackpot formats.Source

Facts above link directly to their sources. Published TUM dates and public-source check dates describe different things.

Public background sources checked October 20, 2026. The selection contains 127 published issues.

Sierra DeGroff Undated public page; inspected October 20, 2026 · Checked Oct 20, 2026

Interface icons: Lucide · ISC license.

Public background & sources Checked October 20, 2026

Career context from one original public source. TUM’s dated reporting appears below.

This is a limited career snapshot, checked October 20, 2026. Source publication dates and event dates are shown separately.

Links preserved from TUM coverage

Published TUM issueThe Ultra Minute · 2026-07-27
Published article, 2026-07-27T15:40:23Z. Archived published text is pinned to canonical main 5d25d2ce1fc4.
Public source linked by TUMinstagram.com · linked in 2026-07-27
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMstatistik.d-u-v.org · linked in 2026-07-27
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMstatistik.d-u-v.org · linked in 2026-07-27
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2026-07-06
Published article, 2026-07-06T19:10:51Z. Archived published text is pinned to canonical main 1405f79c9a29.
Public source linked by TUMyoutu.be · linked in 2026-07-06
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2025-07-11
Published article, 2025-07-11T19:43:19.605Z. Public original captured at 2026-10-28T00:38:38.573Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Published TUM issueThe Ultra Minute · 2025-06-06
Published article, 2025-06-06T23:11:57.931Z. Public original captured at 2026-10-28T02:39:04.263Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMyoutu.be · linked in 2025-06-06
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMyoutu.be · linked in 2025-06-06
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMyoutu.be · linked in 2025-06-06
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMyoutu.be · linked in 2025-06-06
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMyoutu.be · linked in 2025-06-06
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2025-05-02
Published article, 2025-05-02T15:19:48.171Z. Public original captured at 2026-10-28T02:39:04.329Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMinstagram.com · linked in 2025-05-02
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2025-04-09
Published article, 2025-04-09T14:49:53.810Z. Public original captured at 2026-10-28T23:18:25.986Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMinstagram.com · linked in 2025-04-09
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMinstagram.com · linked in 2025-04-09
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2025-03-13
Published article, 2025-03-13T20:18:10.166Z. Public original captured at 2026-10-30T03:34:14.134Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMultraminute.substack.com · linked in 2025-03-13
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMpodcasts.apple.com · linked in 2025-03-13
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMopen.spotify.com · linked in 2025-03-13
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2025-02-21
Published article, 2025-02-21T01:34:56.246Z. Public original captured at 2026-10-30T03:34:14.166Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Published TUM issueThe Ultra Minute · 2025-01-31
Published article, 2025-01-31T19:01:14.462Z. Public original captured at 2026-10-30T05:55:43.631Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMinstagram.com · linked in 2025-01-31
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMinstagram.com · linked in 2025-01-31
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2025-01-02
Published article, 2025-01-02T23:04:55.958Z. Public original captured at 2026-10-30T08:39:44.975Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMinstagram.com · linked in 2025-01-02
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMinstagram.com · linked in 2025-01-02
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.

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