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BOSTON MARATHON 2025

Maria Nieves

Bib: 18379•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 50%
Gender (Female)
#0 / 12228
Top 36%
Masters (Masters Women)
#0 / 6759
Top 21%
Division (F40-44)
#0 / 1718
Top 43%
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
7:45/mi
24:06
↑ 97↓ 3451.5%
10K· 6.21 mi
7:36/mi
47:43
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:11:30
↑ 67↓ 78
20K· 12.43 mi
7:45/mi
1:35:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:40:55
↑ 19↓ 370.5%
25K· 15.53 mi
7:52/mi
1:59:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:13/mi
2:25:31
↑ 181↓ 1480.2%
20M
8:21/mi
2:36:52
↑ 64↓ 500.2%
21M
10:14/mi
2:47:06
↑ 106↓ 241.6%
35K· 21.75 mi
7:42/mi
2:52:52
↑ 17↓ 861.7%
23M
8:56/mi
3:04:03
↑ 23↓ 630.6%
24M
8:25/mi
3:12:28
↓ 821.3%
40K· 24.85 mi
9:41/mi
3:20:45
↓ 200.3%
25.2M
10:44/mi
3:24:27
↑ 13↓ 160.2%
Finish· 26.22 mi
8:33/mi
3:33:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:55
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:52:15
Pace8:34 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5924:067:4524:06
7:45
-
10K
6.21 mi11:39:3647:437:4123:37
7:36
-0:09
15K
9.32 mi12:03:231:11:307:4023:47
7:39
+0:03
20K
12.43 mi12:27:281:35:357:4124:05
7:45
+0:06
Half
13.11 mi12:32:481:40:557:425:20
7:49
+0:04
25K
15.53 mi12:51:521:59:597:4319:04
7:52
+0:03
30K
18.64 mi13:17:242:25:317:4825:32
8:13
+0:21
20M
20.00 mi13:28:452:36:527:5111:21
8:21
+0:08
21M
21.00 mi13:38:592:47:067:5710:14
10:14
+1:53
35K
21.75 mi13:44:452:52:527:575:46
7:42
-2:32
23M
23.00 mi13:55:563:04:038:0011:11
8:56
+1:14
24M
24.00 mi14:04:213:12:288:018:25
8:25
-0:31
40K
24.85 mi14:12:383:20:458:058:17
9:41
+1:16
25.2M
25.20 mi14:16:203:24:278:073:42
10:44
+1:03
Finish
26.22 mi14:25:033:33:108:088:43
8:33
-2:11

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

7:36 /mi

Average Pace

8:08 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

53:10

25% of race

Time at Steady Pace

2:06:36

59% of race

Time at Slower Pace

33:24

16% of race

Average Pace: 8:08 /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 mi11:15:5924:067:4524:06
7:45
#14455
10K
6.21 mi11:39:3647:437:4123:37
7:36
#13752
15K
9.32 mi12:03:231:11:307:4023:47
7:39
#13503
20K
12.43 mi12:27:281:35:357:4124:05
7:45
#13291
Half
13.11 mi12:32:481:40:557:425:20
7:49
#13353
25K
15.53 mi12:51:521:59:597:4319:04
7:52
#13230
30K
18.64 mi13:17:242:25:317:4825:32
8:13
#13147
20M
20.00 mi13:28:452:36:527:5111:21
8:21
#13075
21M
21.00 mi13:38:592:47:067:5710:14
10:14
#13533
35K
21.75 mi13:44:452:52:527:575:46
7:42
#13399
23M
23.00 mi13:55:563:04:038:0011:11
8:56
#13535
24M
24.00 mi14:04:213:12:288:018:25
8:25
#13545
40K
24.85 mi14:12:383:20:458:058:17
9:41
#13862
25.2M
25.20 mi14:16:203:24:278:073:42
10:44
#14000
Finish
26.22 mi14:25:033:33:108:088:43
8:33
#14082
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi144554191419113111(Top 46%)3513(Top 29%)3513(Top 204%)
10K6.21 mi3.10 mi13752+7033797+3943797+39413059(Top 46%)3405(Top 28%)3405(Top 198%)
15K9.32 mi3.11 mi13503+2493690+1073690+10713111(Top 46%)3513(Top 29%)3513(Top 204%)
20K12.43 mi3.11 mi13291+2123597+933597+9312882(Top 45%)3488(Top 29%)3488(Top 203%)
Half13.11 mi0.68 mi13353-623643-463643-4614462(Top 51%)4327(Top 35%)4327(Top 252%)
25K15.53 mi2.42 mi13230+1233615+283615+2812883(Top 45%)3610(Top 30%)3610(Top 210%)
30K18.64 mi3.11 mi13147+833639-243639-2412971(Top 46%)3815(Top 31%)3815(Top 222%)
20M20.00 mi1.36 mi13075+723623+163623+1612881(Top 45%)3910(Top 32%)3910(Top 228%)
21M21.00 mi1.00 mi13533-4583908-2853908-28519138(Top 67%)7394(Top 60%)7394(Top 430%)
35K21.75 mi0.75 mi13399+1343858+503858+5010215(Top 36%)2733(Top 22%)2733(Top 159%)
23M23.00 mi1.25 mi13535-1363975-1173975-11715879(Top 56%)5817(Top 48%)5817(Top 339%)
24M24.00 mi1.00 mi13545-104001-264001-2614009(Top 49%)4828(Top 39%)4828(Top 281%)
40K24.85 mi0.85 mi13862-3174222-2214222-22119432(Top 68%)7848(Top 64%)7848(Top 457%)
25.2M25.20 mi0.35 mi14000-1384290-684290-6819826(Top 70%)8054(Top 66%)8054(Top 469%)
Finish26.22 mi1.02 mi14082-824360-704360-7016579(Top 58%)6337(Top 52%)6337(Top 369%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13111

Females

3513

F40-44

3513

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

13059

Females

3405

F40-44

3405

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13111

Females

3513

F40-44

3513

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12882

Females

3488

F40-44

3488

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

14462

Females

4327

F40-44

4327

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12883

Females

3610

F40-44

3610

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12971

Females

3815

F40-44

3815

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12881

Females

3910

F40-44

3910

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

19138

Females

7394

F40-44

7394

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

10215

Females

2733

F40-44

2733

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15879

Females

5817

F40-44

5817

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

14009

Females

4828

F40-44

4828

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19432

Females

7848

F40-44

7848

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19826

Females

8054

F40-44

8054

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

16579

Females

6337

F40-44

6337

Passing Analysis

Category:
Athletes Passed
2446
Passed By
2073
Net Change
+373
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14455
5K → 10K75855+703#14455#13752
10K → 15K33687+249#13752#13503
15K → 20K29078+212#13503#13291
20K → Half1880-62#13291#13353
Half → 25K223100+123#13353#13230
25K → 30K280197+83#13230#13147
30K → 20M14371+72#13147#13075
20M → 21M25483-458#13075#13533
21M → 35K1417+134#13533#13399
35K → 23M68204-136#13399#13535
23M → 24M8090-10#13535#13545
24M → 40K26343-317#13545#13862
40K → 25.2M11149-138#13862#14000
25.2M → Finish47129-82#14000#14082
TOTALS24462073+373
📊

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