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BOSTON MARATHON 2025

Nicole Ostrowski

Bib: 26814•F

FL

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0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:49
Rank: #26889
Start → 5K
10:34/mi
32:49 split
10K· 6.21 mi
1:07:07
Rank: #27027 (-138)
5K → 10K
11:02/mi
34:18 split
15K· 9.32 mi
1:42:22
Rank: #27051 (-24)
10K → 15K
11:21/mi
35:15 split
20K· 12.43 mi
2:19:22
Rank: #27052 (-1)
15K → 20K
11:55/mi
37:00 split
Half· 13.11 mi
2:27:45
Rank: #27099 (-47)
20K → Half
12:17/mi
8:23 split
25K· 15.53 mi
2:57:28
Rank: #27036 (+63)
Half → 25K
12:15/mi
29:43 split
30K· 18.64 mi
3:36:51
Rank: #26940 (+96)
25K → 30K
12:41/mi
39:23 split
20M
3:54:02
Rank: #26900 (+40)
30K → 20M
12:39/mi
17:11 split
21M
4:08:18
Rank: #26891 (+9)
20M → 21M
14:16/mi
14:16 split
35K· 21.75 mi
4:17:43
Rank: #26890 (+1)
21M → 35K
12:35/mi
9:25 split
23M
4:34:23
Rank: #26907 (-17)
35K → 23M
13:19/mi
16:40 split
24M
4:46:51
Rank: #26869 (+38)
23M → 24M
12:28/mi
12:28 split
40K· 24.85 mi
4:57:25
Rank: #26828 (+41)
24M → 40K
12:22/mi
10:34 split
25.2M
5:02:18
Rank: #26819 (+9)
40K → 25.2M
14:10/mi
4:53 split
Finish· 26.22 mi
5:14:54
Rank: #26841 (-22)
25.2M → Finish
12:22/mi
12:36 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:27:45
Pace11:16 /mi
2nd Half
Distance13.11 mi
Time2:47:09
Pace12:45 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:5132:4910:3432:49
10:34
-
10K
6.21 mi12:23:091:07:0710:4834:18
11:02
+0:28
15K
9.32 mi12:58:241:42:2210:5935:15
11:21
+0:19
20K
12.43 mi13:35:242:19:2211:1337:00
11:55
+0:34
Half
13.11 mi13:43:472:27:4511:168:23
12:17
+0:22
25K
15.53 mi14:13:302:57:2811:2529:43
12:15
-0:02
30K
18.64 mi14:52:533:36:5111:3839:23
12:41
+0:26
20M
20.00 mi15:10:043:54:0211:4217:11
12:39
-0:02
21M
21.00 mi15:24:204:08:1811:4914:16
14:16
+1:37
35K
21.75 mi15:33:454:17:4311:519:25
12:35
-1:41
23M
23.00 mi15:50:254:34:2311:5616:40
13:19
+0:44
24M
24.00 mi16:02:534:46:5111:5712:28
12:28
-0:51
40K
24.85 mi16:13:274:57:2511:5810:34
12:22
-0:06
25.2M
25.20 mi16:18:205:02:1812:004:53
14:10
+1:48
Finish
26.22 mi16:30:565:14:5412:0112:36
12:22
-1:48

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

10:34 /mi

Average Pace

12:01 /mi

Slowest Pace

14:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:22

33% of race

Time at Steady Pace

2:56:43

56% of race

Time at Slower Pace

35:49

11% of race

Average Pace: 12:01 /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 mi11:48:5132:4910:3432:49
10:34
#26889
10K
6.21 mi12:23:091:07:0710:4834:18
11:02
#27027
15K
9.32 mi12:58:241:42:2210:5935:15
11:21
#27051
20K
12.43 mi13:35:242:19:2211:1337:00
11:55
#27052
Half
13.11 mi13:43:472:27:4511:168:23
12:17
#27099
25K
15.53 mi14:13:302:57:2811:2529:43
12:15
#27036
30K
18.64 mi14:52:533:36:5111:3839:23
12:41
#26940
20M
20.00 mi15:10:043:54:0211:4217:11
12:39
#26900
21M
21.00 mi15:24:204:08:1811:4914:16
14:16
#26891
35K
21.75 mi15:33:454:17:4311:519:25
12:35
#26890
23M
23.00 mi15:50:254:34:2311:5616:40
13:19
#26907
24M
24.00 mi16:02:534:46:5111:5712:28
12:28
#26869
40K
24.85 mi16:13:274:57:2511:5810:34
12:22
#26828
25.2M
25.20 mi16:18:205:02:1812:004:53
14:10
#26819
Finish
26.22 mi16:30:565:14:5412:0112:36
12:22
#26841
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26889112591125927077(Top 95%)11421(Top 93%)11421(Top 209%)
10K6.21 mi3.10 mi27027-13811360-10111360-10127117(Top 95%)11429(Top 93%)11429(Top 209%)
15K9.32 mi3.11 mi27051-2411389-2911389-2927077(Top 95%)11421(Top 93%)11421(Top 209%)
20K12.43 mi3.11 mi27052-111397-811397-827040(Top 95%)11413(Top 93%)11413(Top 209%)
Half13.11 mi0.68 mi27099-4711426-2911426-2927639(Top 97%)11790(Top 96%)11790(Top 216%)
25K15.53 mi2.42 mi27036+6311402+2411402+2426688(Top 94%)11243(Top 92%)11243(Top 206%)
30K18.64 mi3.11 mi26940+9611359+4311359+4326347(Top 93%)11148(Top 91%)11148(Top 204%)
20M20.00 mi1.36 mi26900+4011348+1111348+1126071(Top 92%)11051(Top 90%)11051(Top 202%)
21M21.00 mi1.00 mi26891+911350-211350-226490(Top 93%)11308(Top 92%)11308(Top 207%)
35K21.75 mi0.75 mi26890+111349+111349+126547(Top 93%)11361(Top 93%)11361(Top 208%)
23M23.00 mi1.25 mi26907-1711364-1511364-1526722(Top 94%)11465(Top 94%)11465(Top 210%)
24M24.00 mi1.00 mi26869+3811363+111363+126267(Top 92%)11254(Top 92%)11254(Top 206%)
40K24.85 mi0.85 mi26828+4111349+1411349+1425444(Top 90%)10892(Top 89%)10892(Top 199%)
25.2M25.20 mi0.35 mi26819+911347+211347+226431(Top 93%)11397(Top 93%)11397(Top 208%)
Finish26.22 mi1.02 mi26841-2211359-1211359-1227176(Top 96%)11703(Top 96%)11703(Top 214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

27077

Females

11421

F18-39

11421

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

27117

Females

11429

F18-39

11429

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

27077

Females

11421

F18-39

11421

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

27040

Females

11413

F18-39

11413

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

27639

Females

11790

F18-39

11790

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

26688

Females

11243

F18-39

11243

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

26347

Females

11148

F18-39

11148

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

26071

Females

11051

F18-39

11051

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

26490

Females

11308

F18-39

11308

21M→35K

21.0 - 21.8 mi

Top 93%
×7story building
+17ft-86ft

Overall

26547

Females

11361

F18-39

11361

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

26722

Females

11465

F18-39

11465

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

26267

Females

11254

F18-39

11254

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25444

Females

10892

F18-39

10892

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26431

Females

11397

F18-39

11397

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

27176

Females

11703

F18-39

11703

Passing Analysis

Category:
Athletes Passed
800
Passed By
752
Net Change
+48
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26889
5K → 10K108246-138#26889#27027
10K → 15K100124-24#27027#27051
15K → 20K100101-1#27051#27052
20K → Half653-47#27052#27099
Half → 25K10239+63#27099#27036
25K → 30K12933+96#27036#26940
30K → 20M5515+40#26940#26900
20M → 21M3324+9#26900#26891
21M → 35K2120+1#26891#26890
35K → 23M2340-17#26890#26907
23M → 24M5416+38#26907#26869
24M → 40K443+41#26869#26828
40K → 25.2M145+9#26828#26819
25.2M → Finish1133-22#26819#26841
TOTALS800752+48
📊

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