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BOSTON MARATHON 2025

Kasia Stachowiak

Bib: 31455•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:18
Rank: #21452
Start → 5K
27:18 | 8:47/mi
10K· 6.21 mi
54:32
Rank: #21326 (+126)
5K → 10K
27:14 | 8:46/mi
15K· 9.32 mi
1:21:11
Rank: #20807 (+519)
10K → 15K
26:39 | 8:35/mi
20K· 12.43 mi
1:47:39
Rank: #20209 (+598)
15K → 20K
26:28 | 8:31/mi
Half· 13.11 mi
1:53:21
Rank: #20100 (+109)
20K → Half
5:42 | 8:21/mi
25K· 15.53 mi
2:14:32
Rank: #19841 (+259)
Half → 25K
21:11 | 8:44/mi
30K· 18.64 mi
2:43:44
Rank: #19780 (+61)
25K → 30K
29:12 | 9:24/mi
20M
2:56:49
Rank: #19780
30K → 20M
13:05 | 9:38/mi
21M
3:07:11
Rank: #19767 (+13)
20M → 21M
10:22 | 10:22/mi
35K· 21.75 mi
3:14:16
Rank: #19788 (-21)
21M → 35K
7:05 | 9:28/mi
23M
3:26:27
Rank: #19796 (-8)
35K → 23M
12:11 | 9:44/mi
24M
3:36:14
Rank: #19852 (-56)
23M → 24M
9:47 | 9:47/mi
40K· 24.85 mi
3:44:32
Rank: #19836 (+16)
24M → 40K
8:18 | 9:42/mi
25.2M
3:48:04
Rank: #19819 (+17)
40K → 25.2M
3:32 | 10:15/mi
Finish· 26.22 mi
3:57:00
Rank: #19741 (+78)
25.2M → Finish
8:56 | 8:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:21
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time2:03:39
Pace9:26 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:5427:188:4727:18
8:47
-
10K
6.21 mi12:21:0854:328:4727:14
8:46
-0:01
15K
9.32 mi12:47:471:21:118:4326:39
8:35
-0:11
20K
12.43 mi13:14:151:47:398:4026:28
8:31
-0:04
Half
13.11 mi13:19:571:53:218:395:42
8:21
-0:10
25K
15.53 mi13:41:082:14:328:4021:11
8:44
+0:23
30K
18.64 mi14:10:202:43:448:4729:12
9:24
+0:40
20M
20.00 mi14:23:252:56:498:5013:05
9:38
+0:14
21M
21.00 mi14:33:473:07:118:5510:22
10:22
+0:44
35K
21.75 mi14:40:523:14:168:567:05
9:28
-0:54
23M
23.00 mi14:53:033:26:278:5912:11
9:44
+0:16
24M
24.00 mi15:02:503:36:149:019:47
9:47
+0:03
40K
24.85 mi15:11:083:44:329:028:18
9:42
-0:05
25.2M
25.20 mi15:14:403:48:049:033:32
10:15
+0:33
Finish
26.22 mi15:23:363:57:009:038:56
8:46
-1:29

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

8:21 /mi

Average Pace

9:03 /mi

Slowest Pace

10:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:28

61% of race

Time at Steady Pace

57:40

24% of race

Time at Slower Pace

35:52

15% of race

Average Pace: 9:02 /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 mi11:53:5427:188:4727:18
8:47
#21452
10K
6.21 mi12:21:0854:328:4727:14
8:46
#21326
15K
9.32 mi12:47:471:21:118:4326:39
8:35
#20807
20K
12.43 mi13:14:151:47:398:4026:28
8:31
#20209
Half
13.11 mi13:19:571:53:218:395:42
8:21
#20100
25K
15.53 mi13:41:082:14:328:4021:11
8:44
#19841
30K
18.64 mi14:10:202:43:448:4729:12
9:24
#19780
20M
20.00 mi14:23:252:56:498:5013:05
9:38
#19780
21M
21.00 mi14:33:473:07:118:5510:22
10:22
#19767
35K
21.75 mi14:40:523:14:168:567:05
9:28
#19788
23M
23.00 mi14:53:033:26:278:5912:11
9:44
#19796
24M
24.00 mi15:02:503:36:149:019:47
9:47
#19852
40K
24.85 mi15:11:083:44:329:028:18
9:42
#19836
25.2M
25.20 mi15:14:403:48:049:033:32
10:15
#19819
Finish
26.22 mi15:23:363:57:009:038:56
8:46
#19741
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi214528334833419802(Top 70%)7335(Top 60%)7335(Top 427%)
10K6.21 mi3.10 mi21326+1268232+1028232+10221233(Top 75%)8160(Top 67%)8160(Top 475%)
15K9.32 mi3.11 mi20807+5197929+3037929+30319802(Top 70%)7335(Top 60%)7335(Top 427%)
20K12.43 mi3.11 mi20209+5987597+3327597+33218381(Top 65%)6555(Top 54%)6555(Top 382%)
Half13.11 mi0.68 mi20100+1097534+637534+6318399(Top 65%)6576(Top 54%)6576(Top 383%)
25K15.53 mi2.42 mi19841+2597394+1407394+14018620(Top 66%)6769(Top 55%)6769(Top 394%)
30K18.64 mi3.11 mi19780+617396-27396-219535(Top 69%)7413(Top 61%)7413(Top 431%)
20M20.00 mi1.36 mi197807421-257421-2519712(Top 69%)7640(Top 62%)7640(Top 445%)
21M21.00 mi1.00 mi19767+137440-197440-1919606(Top 69%)7683(Top 63%)7683(Top 447%)
35K21.75 mi0.75 mi19788-217470-307470-3020240(Top 71%)8098(Top 66%)8098(Top 471%)
23M23.00 mi1.25 mi19796-87506-367506-3619563(Top 69%)7816(Top 64%)7816(Top 455%)
24M24.00 mi1.00 mi19852-567567-617567-6120683(Top 73%)8436(Top 69%)8436(Top 491%)
40K24.85 mi0.85 mi19836+167577-107577-1019518(Top 69%)7901(Top 65%)7901(Top 460%)
25.2M25.20 mi0.35 mi19819+177568+97568+918149(Top 64%)7224(Top 59%)7224(Top 420%)
Finish26.22 mi1.02 mi19741+787539+297539+2917901(Top 63%)7036(Top 58%)7036(Top 410%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

19802

Females

7335

F40-44

7335

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

21233

Females

8160

F40-44

8160

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

19802

Females

7335

F40-44

7335

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18381

Females

6555

F40-44

6555

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18399

Females

6576

F40-44

6576

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

18620

Females

6769

F40-44

6769

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19535

Females

7413

F40-44

7413

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19712

Females

7640

F40-44

7640

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

19606

Females

7683

F40-44

7683

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

20240

Females

8098

F40-44

8098

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

19563

Females

7816

F40-44

7816

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

20683

Females

8436

F40-44

8436

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19518

Females

7901

F40-44

7901

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18149

Females

7224

F40-44

7224

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

17901

Females

7036

F40-44

7036

Passing Analysis

Category:
Athletes Passed
2755
Passed By
1044
Net Change
+1711
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21452
5K → 10K351225+126#21452#21326
10K → 15K55132+519#21326#20807
15K → 20K60911+598#20807#20209
20K → Half1112+109#20209#20100
Half → 25K28829+259#20100#19841
25K → 30K255194+61#19841#19780
30K → 20M1041040#19780#19780
20M → 21M10188+13#19780#19767
21M → 35K4364-21#19767#19788
35K → 23M9199-8#19788#19796
23M → 24M56112-56#19796#19852
24M → 40K6347+16#19852#19836
40K → 25.2M3316+17#19836#19819
25.2M → Finish9921+78#19819#19741
TOTALS27551044+1711
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing