Boston Marathon logo
BOSTON MARATHON 2025

Natalie Staheli

Bib: 14197•F

UT

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:51
Rank: #18843
Start → 5K
25:51 | 8:19/mi
10K· 6.21 mi
52:44
Rank: #19761 (-918)
5K → 10K
26:53 | 8:39/mi
15K· 9.32 mi
1:22:39
Rank: #21638 (-1877)
10K → 15K
29:55 | 9:38/mi
20K· 12.43 mi
1:51:53
Rank: #21952 (-314)
15K → 20K
29:14 | 9:25/mi
Half· 13.11 mi
1:57:54
Rank: #21886 (+66)
20K → Half
6:01 | 8:49/mi
25K· 15.53 mi
2:20:40
Rank: #21816 (+70)
Half → 25K
22:46 | 9:23/mi
30K· 18.64 mi
2:51:30
Rank: #21758 (+58)
25K → 30K
30:50 | 9:55/mi
20M
3:05:56
Rank: #21858 (-100)
30K → 20M
14:26 | 10:37/mi
21M
3:15:40
Rank: #21598 (+260)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
3:22:07
Rank: #21436 (+162)
21M → 35K
6:27 | 8:37/mi
23M
3:33:25
Rank: #21136 (+300)
35K → 23M
11:18 | 9:02/mi
24M
3:42:08
Rank: #20953 (+183)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:50:02
Rank: #20842 (+111)
24M → 40K
7:54 | 9:14/mi
25.2M
3:53:19
Rank: #20754 (+88)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
4:01:48
Rank: #20610 (+144)
25.2M → Finish
8:29 | 8:19/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:54
Pace9:00 /mi
2nd Half
Distance13.11 mi
Time2:03:54
Pace9:27 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3725:518:1925:51
8:19
-
10K
6.21 mi11:47:3052:448:2926:53
8:39
+0:20
15K
9.32 mi12:17:251:22:398:5229:55
9:38
+0:59
20K
12.43 mi12:46:391:51:539:0029:14
9:25
-0:13
Half
13.11 mi12:52:401:57:549:006:01
8:49
-0:36
25K
15.53 mi13:15:262:20:409:0322:46
9:23
+0:34
30K
18.64 mi13:46:162:51:309:1230:50
9:55
+0:32
20M
20.00 mi14:00:423:05:569:1814:26
10:37
+0:42
21M
21.00 mi14:10:263:15:409:199:44
9:44
-0:53
35K
21.75 mi14:16:533:22:079:186:27
8:37
-1:07
23M
23.00 mi14:28:113:33:259:1711:18
9:02
+0:25
24M
24.00 mi14:36:543:42:089:158:43
8:43
-0:19
40K
24.85 mi14:44:483:50:029:157:54
9:14
+0:31
25.2M
25.20 mi14:48:053:53:199:163:17
9:31
+0:17
Finish
26.22 mi14:56:344:01:489:148:29
8:19
-1:12

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:19 /mi

Average Pace

9:14 /mi

Slowest Pace

10:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:24

34% of race

Time at Steady Pace

1:14:29

31% of race

Time at Slower Pace

1:24:55

35% of race

Average Pace: 9:13 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:20:3725:518:1925:51
8:19
#18843
10K
6.21 mi11:47:3052:448:2926:53
8:39
#19761
15K
9.32 mi12:17:251:22:398:5229:55
9:38
#21638
20K
12.43 mi12:46:391:51:539:0029:14
9:25
#21952
Half
13.11 mi12:52:401:57:549:006:01
8:49
#21886
25K
15.53 mi13:15:262:20:409:0322:46
9:23
#21816
30K
18.64 mi13:46:162:51:309:1230:50
9:55
#21758
20M
20.00 mi14:00:423:05:569:1814:26
10:37
#21858
21M
21.00 mi14:10:263:15:409:199:44
9:44
#21598
35K
21.75 mi14:16:533:22:079:186:27
8:37
#21436
23M
23.00 mi14:28:113:33:259:1711:18
9:02
#21136
24M
24.00 mi14:36:543:42:089:158:43
8:43
#20953
40K
24.85 mi14:44:483:50:029:157:54
9:14
#20842
25.2M
25.20 mi14:48:053:53:199:163:17
9:31
#20754
Finish
26.22 mi14:56:344:01:489:148:29
8:19
#20610
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi188436822682224100(Top 85%)9724(Top 80%)9724(Top 746%)
10K6.21 mi3.10 mi19761-9187331-5097331-50920627(Top 73%)7816(Top 64%)7816(Top 600%)
15K9.32 mi3.11 mi21638-18778391-10608391-106024100(Top 85%)9724(Top 80%)9724(Top 746%)
20K12.43 mi3.11 mi21952-3148577-1868577-18622605(Top 80%)8920(Top 73%)8920(Top 685%)
Half13.11 mi0.68 mi21886+668540+378540+3721027(Top 74%)8060(Top 66%)8060(Top 619%)
25K15.53 mi2.42 mi21816+708508+328508+3221512(Top 76%)8365(Top 68%)8365(Top 642%)
30K18.64 mi3.11 mi21758+588484+248484+2421379(Top 75%)8441(Top 69%)8441(Top 648%)
20M20.00 mi1.36 mi21858-1008556-728556-7222746(Top 80%)9280(Top 76%)9280(Top 712%)
21M21.00 mi1.00 mi21598+2608444+1128444+11217219(Top 61%)6391(Top 52%)6391(Top 490%)
35K21.75 mi0.75 mi21436+1628369+758369+7516259(Top 57%)5944(Top 49%)5944(Top 456%)
23M23.00 mi1.25 mi21136+3008235+1348235+13416442(Top 58%)6147(Top 50%)6147(Top 472%)
24M24.00 mi1.00 mi20953+1838152+838152+8315892(Top 56%)5882(Top 48%)5882(Top 451%)
40K24.85 mi0.85 mi20842+1118112+408112+4017588(Top 62%)6921(Top 57%)6921(Top 531%)
25.2M25.20 mi0.35 mi20754+888076+368076+3614813(Top 52%)5483(Top 45%)5483(Top 421%)
Finish26.22 mi1.02 mi20610+1448004+728004+7215134(Top 53%)5571(Top 46%)5571(Top 428%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

24100

Females

9724

F50-54

9724

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

20627

Females

7816

F50-54

7816

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

24100

Females

9724

F50-54

9724

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

22605

Females

8920

F50-54

8920

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

21027

Females

8060

F50-54

8060

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

21512

Females

8365

F50-54

8365

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

21379

Females

8441

F50-54

8441

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

22746

Females

9280

F50-54

9280

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17219

Females

6391

F50-54

6391

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

16259

Females

5944

F50-54

5944

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16442

Females

6147

F50-54

6147

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15892

Females

5882

F50-54

5882

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17588

Females

6921

F50-54

6921

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14813

Females

5483

F50-54

5483

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

15134

Females

5571

F50-54

5571

Passing Analysis

Category:
Athletes Passed
1999
Passed By
3766
Net Change
-1767
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18843
5K → 10K58976-918#18843#19761
10K → 15K171894-1877#19761#21638
15K → 20K109423-314#21638#21952
20K → Half737+66#21952#21886
Half → 25K179109+70#21886#21816
25K → 30K224166+58#21816#21758
30K → 20M64164-100#21758#21858
20M → 21M2655+260#21858#21598
21M → 35K1620+162#21598#21436
35K → 23M3033+300#21436#21136
23M → 24M1874+183#21136#20953
24M → 40K12312+111#20953#20842
40K → 25.2M902+88#20842#20754
25.2M → Finish1451+144#20754#20610
TOTALS19993766-1767
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing