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BOSTON MARATHON 2025

Katarzyna Nowakowska

Bib: 18509•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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:53/mi
24:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:58/mi
49:15
↑ 79↓ 1380.4%
15K· 9.32 mi
8:52/mi
1:16:49
↑ 67↓ 78
20K· 12.43 mi
9:26/mi
1:46:06
↑ 106↓ 860.1%
Half· 13.11 mi
8:24/mi
1:51:50
↑ 19↓ 370.5%
25K· 15.53 mi
9:17/mi
2:14:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:40/mi
2:44:23
↑ 181↓ 1480.2%
20M
10:01/mi
2:58:00
↑ 64↓ 500.2%
21M
10:35/mi
3:08:35
↑ 106↓ 241.6%
35K· 21.75 mi
8:47/mi
3:15:09
↑ 17↓ 861.7%
23M
9:06/mi
3:26:33
↑ 23↓ 630.6%
24M
9:04/mi
3:35:37
↓ 821.3%
40K· 24.85 mi
9:31/mi
3:43:45
↓ 200.3%
25.2M
10:21/mi
3:47:19
↑ 13↓ 160.2%
Finish· 26.22 mi
8:05/mi
3:55:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:50
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time2:03:43
Pace9:26 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4624:297:5324:29
7:53
-
10K
6.21 mi11:40:3249:157:5624:46
7:58
+0:05
15K
9.32 mi12:08:061:16:498:1427:34
8:52
+0:54
20K
12.43 mi12:37:231:46:068:3229:17
9:26
+0:34
Half
13.11 mi12:43:071:51:508:325:44
8:24
-1:02
25K
15.53 mi13:05:382:14:218:3922:31
9:17
+0:53
30K
18.64 mi13:35:402:44:238:4930:02
9:40
+0:23
20M
20.00 mi13:49:172:58:008:5413:37
10:01
+0:21
21M
21.00 mi13:59:523:08:358:5910:35
10:35
+0:34
35K
21.75 mi14:06:263:15:098:586:34
8:47
-1:48
23M
23.00 mi14:17:503:26:338:5911:24
9:06
+0:19
24M
24.00 mi14:26:543:35:378:599:04
9:04
-0:02
40K
24.85 mi14:35:023:43:459:008:08
9:31
+0:27
25.2M
25.20 mi14:38:363:47:199:013:34
10:21
+0:50
Finish
26.22 mi14:46:503:55:338:598:14
8:05
-2:16

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

7:53 /mi

Average Pace

8:59 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:03:13

27% of race

Time at Steady Pace

1:46:24

45% of race

Time at Slower Pace

1:05:56

28% of race

Average Pace: 8:59 /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 mi11:15:4624:297:5324:29
7:53
#15528
10K
6.21 mi11:40:3249:157:5624:46
7:58
#15923
15K
9.32 mi12:08:061:16:498:1427:34
8:52
#18050
20K
12.43 mi12:37:231:46:068:3229:17
9:26
#19520
Half
13.11 mi12:43:071:51:508:325:44
8:24
#19465
25K
15.53 mi13:05:382:14:218:3922:31
9:17
#19772
30K
18.64 mi13:35:402:44:238:4930:02
9:40
#19976
20M
20.00 mi13:49:172:58:008:5413:37
10:01
#20084
21M
21.00 mi13:59:523:08:358:5910:35
10:35
#20086
35K
21.75 mi14:06:263:15:098:586:34
8:47
#19983
23M
23.00 mi14:17:503:26:338:5911:24
9:06
#19821
24M
24.00 mi14:26:543:35:378:599:04
9:04
#19719
40K
24.85 mi14:35:023:43:459:008:08
9:31
#19700
25.2M
25.20 mi14:38:363:47:199:013:34
10:21
#19672
Finish
26.22 mi14:46:503:55:338:598:14
8:05
#19457
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi155284850485021415(Top 75%)8223(Top 67%)8223(Top 479%)
10K6.21 mi3.10 mi15923-3955092-2425092-24216270(Top 57%)5295(Top 43%)5295(Top 308%)
15K9.32 mi3.11 mi18050-21276365-12736365-127321415(Top 75%)8223(Top 67%)8223(Top 479%)
20K12.43 mi3.11 mi19520-14707198-8337198-83322657(Top 80%)8953(Top 73%)8953(Top 521%)
Half13.11 mi0.68 mi19465+557171+277171+2718665(Top 66%)6724(Top 55%)6724(Top 391%)
25K15.53 mi2.42 mi19772-3077354-1837354-18321127(Top 74%)8161(Top 67%)8161(Top 475%)
30K18.64 mi3.11 mi19976-2047511-1577511-15720595(Top 73%)7988(Top 65%)7988(Top 465%)
20M20.00 mi1.36 mi20084-1087595-847595-8421011(Top 74%)8360(Top 68%)8360(Top 487%)
21M21.00 mi1.00 mi20086-27627-327627-3220271(Top 71%)8054(Top 66%)8054(Top 469%)
35K21.75 mi0.75 mi19983+1037580+477580+4717182(Top 60%)6461(Top 53%)6461(Top 376%)
23M23.00 mi1.25 mi19821+1627521+597521+5916877(Top 59%)6384(Top 52%)6384(Top 372%)
24M24.00 mi1.00 mi19719+1027490+317490+3117730(Top 62%)6896(Top 56%)6896(Top 401%)
40K24.85 mi0.85 mi19700+197494-47494-418783(Top 66%)7521(Top 62%)7521(Top 438%)
25.2M25.20 mi0.35 mi19672+287489+57489+518489(Top 65%)7378(Top 60%)7378(Top 429%)
Finish26.22 mi1.02 mi19457+2157385+1047385+10413504(Top 48%)4712(Top 39%)4712(Top 274%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21415

Females

8223

F40-44

8223

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16270

Females

5295

F40-44

5295

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21415

Females

8223

F40-44

8223

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

22657

Females

8953

F40-44

8953

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18665

Females

6724

F40-44

6724

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

21127

Females

8161

F40-44

8161

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20595

Females

7988

F40-44

7988

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

21011

Females

8360

F40-44

8360

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

20271

Females

8054

F40-44

8054

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

17182

Females

6461

F40-44

6461

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16877

Females

6384

F40-44

6384

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17730

Females

6896

F40-44

6896

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18783

Females

7521

F40-44

7521

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18489

Females

7378

F40-44

7378

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

13504

Females

4712

F40-44

4712

Passing Analysis

Category:
Athletes Passed
1415
Passed By
5344
Net Change
-3929
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15528
5K → 10K174569-395#15528#15923
10K → 15K132140-2127#15923#18050
15K → 20K171487-1470#18050#19520
20K → Half6611+55#19520#19465
Half → 25K76383-307#19465#19772
25K → 30K163367-204#19772#19976
30K → 20M74182-108#19976#20084
20M → 21M9799-2#20084#20086
21M → 35K1129+103#20086#19983
35K → 23M17513+162#19983#19821
23M → 24M12422+102#19821#19719
24M → 40K6849+19#19719#19700
40K → 25.2M4012+28#19700#19672
25.2M → Finish2161+215#19672#19457
TOTALS14155344-3929
📊

Passing Visuals

Category:
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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