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BOSTON MARATHON 2025

Natalia Bonilla

Bib: 19447•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 38%
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
24:50
Rank: #16536
Start → 5K
8:00/mi
24:50 split
10K· 6.21 mi
49:11
Rank: #15835 (+701)
5K → 10K
7:50/mi
24:21 split
15K· 9.32 mi
1:13:46
Rank: #15628 (+207)
10K → 15K
7:55/mi
24:35 split
20K· 12.43 mi
1:38:30
Rank: #15339 (+289)
15K → 20K
7:58/mi
24:44 split
Half· 13.11 mi
1:43:49
Rank: #15271 (+68)
20K → Half
7:48/mi
5:19 split
25K· 15.53 mi
2:03:30
Rank: #15161 (+110)
Half → 25K
8:07/mi
19:41 split
30K· 18.64 mi
2:30:28
Rank: #15292 (-131)
25K → 30K
8:41/mi
26:58 split
20M
2:42:54
Rank: #15458 (-166)
30K → 20M
9:09/mi
12:26 split
21M
2:52:07
Rank: #15363 (+95)
20M → 21M
9:13/mi
9:13 split
35K· 21.75 mi
2:58:18
Rank: #15291 (+72)
21M → 35K
8:16/mi
6:11 split
23M
3:08:46
Rank: #15083 (+208)
35K → 23M
8:22/mi
10:28 split
24M
3:16:52
Rank: #14910 (+173)
23M → 24M
8:06/mi
8:06 split
40K· 24.85 mi
3:23:54
Rank: #14766 (+144)
24M → 40K
8:14/mi
7:02 split
25.2M
3:26:52
Rank: #14659 (+107)
40K → 25.2M
8:36/mi
2:58 split
Finish· 26.22 mi
3:34:59
Rank: #14566 (+93)
25.2M → Finish
7:58/mi
8:07 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:49
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:51:10
Pace8:29 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:5324:508:0024:50
8:00
-
10K
6.21 mi11:41:1449:117:5524:21
7:50
-0:10
15K
9.32 mi12:05:491:13:467:5524:35
7:55
+0:05
20K
12.43 mi12:30:331:38:307:5624:44
7:58
+0:03
Half
13.11 mi12:35:521:43:497:555:19
7:48
-0:10
25K
15.53 mi12:55:332:03:307:5719:41
8:07
+0:19
30K
18.64 mi13:22:312:30:288:0426:58
8:41
+0:34
20M
20.00 mi13:34:572:42:548:0912:26
9:09
+0:28
21M
21.00 mi13:44:102:52:078:129:13
9:13
+0:04
35K
21.75 mi13:50:212:58:188:126:11
8:16
-0:57
23M
23.00 mi14:00:493:08:468:1210:28
8:22
+0:06
24M
24.00 mi14:08:553:16:528:128:06
8:06
-0:16
40K
24.85 mi14:15:573:23:548:127:02
8:14
+0:08
25.2M
25.20 mi14:18:553:26:528:132:58
8:36
+0:22
Finish
26.22 mi14:27:023:34:598:128:07
7:58
-0:38

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

7:48 /mi

Average Pace

8:12 /mi

Slowest Pace

9:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:24

76% of race

Time at Steady Pace

42:22

20% of race

Time at Slower Pace

9:13

4% of race

Average Pace: 8:12 /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 mi11:16:5324:508:0024:50
8:00
#16536
10K
6.21 mi11:41:1449:117:5524:21
7:50
#15835
15K
9.32 mi12:05:491:13:467:5524:35
7:55
#15628
20K
12.43 mi12:30:331:38:307:5624:44
7:58
#15339
Half
13.11 mi12:35:521:43:497:555:19
7:48
#15271
25K
15.53 mi12:55:332:03:307:5719:41
8:07
#15161
30K
18.64 mi13:22:312:30:288:0426:58
8:41
#15292
20M
20.00 mi13:34:572:42:548:0912:26
9:09
#15458
21M
21.00 mi13:44:102:52:078:129:13
9:13
#15363
35K
21.75 mi13:50:212:58:188:126:11
8:16
#15291
23M
23.00 mi14:00:493:08:468:1210:28
8:22
#15083
24M
24.00 mi14:08:553:16:528:128:06
8:06
#14910
40K
24.85 mi14:15:573:23:548:127:02
8:14
#14766
25.2M
25.20 mi14:18:553:26:528:132:58
8:36
#14659
Finish
26.22 mi14:27:023:34:598:128:07
7:58
#14566
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi165365472547215351(Top 54%)4781(Top 39%)4781(Top 87%)
10K6.21 mi3.10 mi15835+7015040+4325040+43215173(Top 53%)4648(Top 38%)4648(Top 85%)
15K9.32 mi3.11 mi15628+2074916+1244916+12415351(Top 54%)4781(Top 39%)4781(Top 87%)
20K12.43 mi3.11 mi15339+2894773+1434773+14314631(Top 52%)4442(Top 36%)4442(Top 81%)
Half13.11 mi0.68 mi15271+684736+374736+3714284(Top 50%)4235(Top 35%)4235(Top 77%)
25K15.53 mi2.42 mi15161+1104700+364700+3614772(Top 52%)4628(Top 38%)4628(Top 85%)
30K18.64 mi3.11 mi15292-1314816-1164816-11615876(Top 56%)5384(Top 44%)5384(Top 98%)
20M20.00 mi1.36 mi15458-1664951-1354951-13517531(Top 62%)6428(Top 53%)6428(Top 118%)
21M21.00 mi1.00 mi15363+954928+234928+2314729(Top 52%)5016(Top 41%)5016(Top 92%)
35K21.75 mi0.75 mi15291+724902+264902+2614074(Top 50%)4710(Top 39%)4710(Top 86%)
23M23.00 mi1.25 mi15083+2084818+844818+8412452(Top 44%)3982(Top 33%)3982(Top 73%)
24M24.00 mi1.00 mi14910+1734753+654753+6511946(Top 42%)3785(Top 31%)3785(Top 69%)
40K24.85 mi0.85 mi14766+1444701+524701+5211761(Top 41%)3796(Top 31%)3796(Top 69%)
25.2M25.20 mi0.35 mi14659+1074647+544647+549559(Top 34%)2836(Top 23%)2836(Top 52%)
Finish26.22 mi1.02 mi14566+934636+114636+1112687(Top 45%)4280(Top 35%)4280(Top 78%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15351

Females

4781

F18-39

4781

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

15173

Females

4648

F18-39

4648

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15351

Females

4781

F18-39

4781

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14631

Females

4442

F18-39

4442

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14284

Females

4235

F18-39

4235

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14772

Females

4628

F18-39

4628

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15876

Females

5384

F18-39

5384

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17531

Females

6428

F18-39

6428

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14729

Females

5016

F18-39

5016

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14074

Females

4710

F18-39

4710

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12452

Females

3982

F18-39

3982

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

11946

Females

3785

F18-39

3785

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11761

Females

3796

F18-39

3796

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9559

Females

2836

F18-39

2836

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12687

Females

4280

F18-39

4280

Passing Analysis

Category:
Athletes Passed
3069
Passed By
1099
Net Change
+1970
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16536
5K → 10K78685+701#16536#15835
10K → 15K312105+207#15835#15628
15K → 20K35465+289#15628#15339
20K → Half779+68#15339#15271
Half → 25K221111+110#15271#15161
25K → 30K199330-131#15161#15292
30K → 20M81247-166#15292#15458
20M → 21M14449+95#15458#15363
21M → 35K10028+72#15363#15291
35K → 23M22214+208#15291#15083
23M → 24M18815+173#15083#14910
24M → 40K1539+144#14910#14766
40K → 25.2M1103+107#14766#14659
25.2M → Finish12229+93#14659#14566
TOTALS30691099+1970
📊

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