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BOSTON MARATHON 2025

Nathalie Dumais

Bib: 24614•F

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Top 36%
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
8:21/mi
25:56
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
52:21
↑ 79↓ 1380.4%
15K· 9.32 mi
8:40/mi
1:19:17
↑ 67↓ 78
20K· 12.43 mi
8:50/mi
1:46:43
↑ 106↓ 860.1%
Half· 13.11 mi
8:40/mi
1:52:38
↑ 19↓ 370.5%
25K· 15.53 mi
9:02/mi
2:14:32
↑ 66↓ 880.2%
30K· 18.64 mi
9:16/mi
2:43:20
↑ 181↓ 1480.2%
20M
9:07/mi
2:55:43
↑ 64↓ 500.2%
21M
10:00/mi
3:05:43
↑ 106↓ 241.6%
35K· 21.75 mi
9:51/mi
3:13:05
↑ 17↓ 861.7%
23M
9:25/mi
3:24:53
↑ 23↓ 630.6%
24M
9:37/mi
3:34:30
↓ 821.3%
40K· 24.85 mi
9:30/mi
3:42:37
↓ 200.3%
25.2M
10:41/mi
3:46:18
↑ 13↓ 160.2%
Finish· 26.22 mi
8:49/mi
3:55:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:38
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:02:39
Pace9:21 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:4325:568:2125:56
8:21
-
10K
6.21 mi11:52:0852:218:2526:25
8:30
+0:09
15K
9.32 mi12:19:041:19:178:3026:56
8:40
+0:10
20K
12.43 mi12:46:301:46:438:3527:26
8:50
+0:10
Half
13.11 mi12:52:251:52:388:355:55
8:40
-0:10
25K
15.53 mi13:14:192:14:328:4021:54
9:02
+0:22
30K
18.64 mi13:43:072:43:208:4628:48
9:16
+0:14
20M
20.00 mi13:55:302:55:438:4712:23
9:07
-0:09
21M
21.00 mi14:05:303:05:438:5110:00
10:00
+0:53
35K
21.75 mi14:12:523:13:058:537:22
9:51
-0:09
23M
23.00 mi14:24:403:24:538:5411:48
9:25
-0:26
24M
24.00 mi14:34:173:34:308:569:37
9:37
+0:12
40K
24.85 mi14:42:243:42:378:578:07
9:30
-0:07
25.2M
25.20 mi14:46:053:46:188:593:41
10:41
+1:11
Finish
26.22 mi14:55:043:55:178:598:59
8:49
-1:52

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

8:21 /mi

Average Pace

8:59 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:12

36% of race

Time at Steady Pace

1:51:18

47% of race

Time at Slower Pace

38:47

16% of race

Average Pace: 8:58 /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 mi11:25:4325:568:2125:56
8:21
#19010
10K
6.21 mi11:52:0852:218:2526:25
8:30
#19397
15K
9.32 mi12:19:041:19:178:3026:56
8:40
#19704
20K
12.43 mi12:46:301:46:438:3527:26
8:50
#19809
Half
13.11 mi12:52:251:52:388:355:55
8:40
#19827
25K
15.53 mi13:14:192:14:328:4021:54
9:02
#19840
30K
18.64 mi13:43:072:43:208:4628:48
9:16
#19664
20M
20.00 mi13:55:302:55:438:4712:23
9:07
#19487
21M
21.00 mi14:05:303:05:438:5110:00
10:00
#19402
35K
21.75 mi14:12:523:13:058:537:22
9:51
#19524
23M
23.00 mi14:24:403:24:538:5411:48
9:25
#19455
24M
24.00 mi14:34:173:34:308:569:37
9:37
#19499
40K
24.85 mi14:42:243:42:378:578:07
9:30
#19456
25.2M
25.20 mi14:46:053:46:188:593:41
10:41
#19454
Finish
26.22 mi14:55:043:55:178:598:59
8:49
#19397
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi190106916691620301(Top 71%)7596(Top 62%)7596(Top 764%)
10K6.21 mi3.10 mi19397-3877119-2037119-20319823(Top 70%)7372(Top 60%)7372(Top 742%)
15K9.32 mi3.11 mi19704-3077295-1767295-17620301(Top 71%)7596(Top 62%)7596(Top 764%)
20K12.43 mi3.11 mi19809-1057368-737368-7320108(Top 71%)7539(Top 62%)7539(Top 758%)
Half13.11 mi0.68 mi19827-187379-117379-1120234(Top 71%)7607(Top 62%)7607(Top 765%)
25K15.53 mi2.42 mi19840-137393-147393-1420057(Top 71%)7562(Top 62%)7562(Top 761%)
30K18.64 mi3.11 mi19664+1767332+617332+6118981(Top 67%)7108(Top 58%)7108(Top 715%)
20M20.00 mi1.36 mi19487+1777258+747258+7417400(Top 61%)6373(Top 52%)6373(Top 641%)
21M21.00 mi1.00 mi19402+857236+227236+2218312(Top 64%)6959(Top 57%)6959(Top 700%)
35K21.75 mi0.75 mi19524-1227318-827318-8221469(Top 76%)8753(Top 72%)8753(Top 881%)
23M23.00 mi1.25 mi19455+697314+47314+418362(Top 65%)7169(Top 59%)7169(Top 721%)
24M24.00 mi1.00 mi19499-447362-487362-4820070(Top 71%)8119(Top 66%)8119(Top 817%)
40K24.85 mi0.85 mi19456+437354+87354+818702(Top 66%)7478(Top 61%)7478(Top 752%)
25.2M25.20 mi0.35 mi19454+27360-67360-619687(Top 69%)7998(Top 65%)7998(Top 805%)
Finish26.22 mi1.02 mi19397+577349+117349+1118156(Top 64%)7165(Top 59%)7165(Top 721%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20301

Females

7596

F55-59

7596

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19823

Females

7372

F55-59

7372

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20301

Females

7596

F55-59

7596

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

20108

Females

7539

F55-59

7539

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20234

Females

7607

F55-59

7607

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20057

Females

7562

F55-59

7562

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

18981

Females

7108

F55-59

7108

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

17400

Females

6373

F55-59

6373

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18312

Females

6959

F55-59

6959

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21469

Females

8753

F55-59

8753

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

18362

Females

7169

F55-59

7169

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20070

Females

8119

F55-59

8119

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18702

Females

7478

F55-59

7478

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19687

Females

7998

F55-59

7998

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18156

Females

7165

F55-59

7165

Passing Analysis

Category:
Athletes Passed
1613
Passed By
2000
Net Change
-387
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19010
5K → 10K114501-387#19010#19397
10K → 15K106413-307#19397#19704
15K → 20K168273-105#19704#19809
20K → Half2442-18#19809#19827
Half → 25K156169-13#19827#19840
25K → 30K310134+176#19840#19664
30K → 20M20124+177#19664#19487
20M → 21M13550+85#19487#19402
21M → 35K23145-122#19402#19524
35K → 23M12556+69#19524#19455
23M → 24M5397-44#19455#19499
24M → 40K8239+43#19499#19456
40K → 25.2M2826+2#19456#19454
25.2M → Finish8831+57#19454#19397
TOTALS16132000-387
📊

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