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BOSTON MARATHON 2025

Nadiara Pereira

Bib: 19364•F

0:00
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

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
8:41/mi
27:00
↑ 97↓ 3451.5%
10K· 6.21 mi
8:45/mi
54:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:54/mi
1:21:49
↑ 67↓ 78
20K· 12.43 mi
9:04/mi
1:50:00
↑ 106↓ 860.1%
Half· 13.11 mi
8:59/mi
1:56:08
↑ 19↓ 370.5%
25K· 15.53 mi
9:14/mi
2:18:31
↑ 66↓ 880.2%
30K· 18.64 mi
9:56/mi
2:49:24
↑ 181↓ 1480.2%
20M
9:59/mi
3:02:58
↑ 64↓ 500.2%
21M
10:45/mi
3:13:43
↑ 106↓ 241.6%
35K· 21.75 mi
9:43/mi
3:20:59
↑ 17↓ 861.7%
23M
9:34/mi
3:32:58
↑ 23↓ 630.6%
24M
10:07/mi
3:43:05
↓ 821.3%
40K· 24.85 mi
10:46/mi
3:52:17
↓ 200.3%
25.2M
15:08/mi
3:57:30
↑ 13↓ 160.2%
Finish· 26.22 mi
11:35/mi
4:09:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:08
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time2:13:10
Pace10:10 /mi
📊Positive Split: 14.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3827:008:4127:00
8:41
-
10K
6.21 mi11:46:4854:108:4327:10
8:45
+0:04
15K
9.32 mi12:14:271:21:498:4727:39
8:54
+0:09
20K
12.43 mi12:42:381:50:008:5128:11
9:04
+0:10
Half
13.11 mi12:48:461:56:088:526:08
8:59
-0:05
25K
15.53 mi13:11:092:18:318:5522:23
9:14
+0:15
30K
18.64 mi13:42:022:49:249:0530:53
9:56
+0:42
20M
20.00 mi13:55:363:02:589:0913:34
9:59
+0:03
21M
21.00 mi14:06:213:13:439:1310:45
10:45
+0:46
35K
21.75 mi14:13:373:20:599:147:16
9:43
-1:02
23M
23.00 mi14:25:363:32:589:1611:59
9:34
-0:09
24M
24.00 mi14:35:433:43:059:1810:07
10:07
+0:33
40K
24.85 mi14:44:553:52:179:219:12
10:46
+0:39
25.2M
25.20 mi14:50:083:57:309:255:13
15:08
+4:22
Finish
26.22 mi15:01:564:09:189:3111:48
11:35
-3:33

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

8:41 /mi

Average Pace

9:31 /mi

Slowest Pace

15:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:49

33% of race

Time at Steady Pace

2:10:31

52% of race

Time at Slower Pace

36:58

15% of race

Average Pace: 9:30 /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 mi11:19:3827:008:4127:00
8:41
#20977
10K
6.21 mi11:46:4854:108:4327:10
8:45
#20994
15K
9.32 mi12:14:271:21:498:4727:39
8:54
#21141
20K
12.43 mi12:42:381:50:008:5128:11
9:04
#21187
Half
13.11 mi12:48:461:56:088:526:08
8:59
#21222
25K
15.53 mi13:11:092:18:318:5522:23
9:14
#21186
30K
18.64 mi13:42:022:49:249:0530:53
9:56
#21282
20M
20.00 mi13:55:363:02:589:0913:34
9:59
#21239
21M
21.00 mi14:06:213:13:439:1310:45
10:45
#21232
35K
21.75 mi14:13:373:20:599:147:16
9:43
#21210
23M
23.00 mi14:25:363:32:589:1611:59
9:34
#21063
24M
24.00 mi14:35:433:43:059:1810:07
10:07
#21100
40K
24.85 mi14:44:553:52:179:219:12
10:46
#21183
25.2M
25.20 mi14:50:083:57:309:255:13
15:08
#21377
Finish
26.22 mi15:01:564:09:189:3111:48
11:35
#21645
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi209778072807221579(Top 76%)8321(Top 68%)8321(Top 152%)
10K6.21 mi3.10 mi20994-178051+218051+2121133(Top 74%)8102(Top 66%)8102(Top 148%)
15K9.32 mi3.11 mi21141-1478114-638114-6321579(Top 76%)8321(Top 68%)8321(Top 152%)
20K12.43 mi3.11 mi21187-468136-228136-2221334(Top 75%)8223(Top 67%)8223(Top 150%)
Half13.11 mi0.68 mi21222-358155-198155-1921823(Top 77%)8495(Top 69%)8495(Top 155%)
25K15.53 mi2.42 mi21186+368147+88147+820920(Top 74%)8051(Top 66%)8051(Top 147%)
30K18.64 mi3.11 mi21282-968240-938240-9321424(Top 75%)8466(Top 69%)8466(Top 155%)
20M20.00 mi1.36 mi21239+438243-38243-320901(Top 74%)8307(Top 68%)8307(Top 152%)
21M21.00 mi1.00 mi21232+78247-48247-420730(Top 73%)8305(Top 68%)8305(Top 152%)
35K21.75 mi0.75 mi21210+228250-38250-321064(Top 74%)8539(Top 70%)8539(Top 156%)
23M23.00 mi1.25 mi21063+1478196+548196+5418996(Top 67%)7519(Top 61%)7519(Top 137%)
24M24.00 mi1.00 mi21100-378248-528248-5221701(Top 76%)8966(Top 73%)8966(Top 164%)
40K24.85 mi0.85 mi21183-838303-558303-5522597(Top 80%)9498(Top 78%)9498(Top 174%)
25.2M25.20 mi0.35 mi21377-1948417-1148417-11427234(Top 96%)11764(Top 96%)11764(Top 215%)
Finish26.22 mi1.02 mi21645-2688587-1708587-17026270(Top 92%)11285(Top 92%)11285(Top 206%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21579

Females

8321

F18-39

8321

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

21133

Females

8102

F18-39

8102

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21579

Females

8321

F18-39

8321

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

21334

Females

8223

F18-39

8223

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21823

Females

8495

F18-39

8495

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

20920

Females

8051

F18-39

8051

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

21424

Females

8466

F18-39

8466

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

20901

Females

8307

F18-39

8307

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20730

Females

8305

F18-39

8305

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

21064

Females

8539

F18-39

8539

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

18996

Females

7519

F18-39

7519

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21701

Females

8966

F18-39

8966

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22597

Females

9498

F18-39

9498

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27234

Females

11764

F18-39

11764

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

26270

Females

11285

F18-39

11285

Passing Analysis

Category:
Athletes Passed
1477
Passed By
2145
Net Change
-668
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20977
5K → 10K266283-17#20977#20994
10K → 15K142289-147#20994#21141
15K → 20K180226-46#21141#21187
20K → Half2055-35#21187#21222
Half → 25K162126+36#21222#21186
25K → 30K171267-96#21186#21282
30K → 20M11673+43#21282#21239
20M → 21M9083+7#21239#21232
21M → 35K6543+22#21232#21210
35K → 23M17225+147#21210#21063
23M → 24M5188-37#21063#21100
24M → 40K28111-83#21100#21183
40K → 25.2M3197-194#21183#21377
25.2M → Finish11279-268#21377#21645
TOTALS14772145-668
📊

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