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BOSTON MARATHON 2025

Emily Brennan

Bib: 25999•F

MA

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
11:26/mi
35:32
↑ 97↓ 3451.5%
10K· 6.21 mi
11:21/mi
1:10:48
↑ 79↓ 1380.4%
15K· 9.32 mi
11:01/mi
1:45:01
↑ 67↓ 78
20K· 12.43 mi
10:48/mi
2:18:35
↑ 106↓ 860.1%
Half· 13.11 mi
10:13/mi
2:25:33
↑ 19↓ 370.5%
25K· 15.53 mi
10:43/mi
2:51:32
↑ 66↓ 880.2%
30K· 18.64 mi
12:10/mi
3:29:20
↑ 181↓ 1480.2%
20M
11:42/mi
3:45:14
↑ 64↓ 500.2%
21M
11:00/mi
3:56:14
↑ 106↓ 241.6%
35K· 21.75 mi
10:20/mi
4:03:58
↑ 17↓ 861.7%
23M
10:55/mi
4:17:38
↑ 23↓ 630.6%
24M
10:23/mi
4:28:01
↓ 821.3%
40K· 24.85 mi
10:50/mi
4:37:17
↓ 200.3%
25.2M
12:08/mi
4:41:28
↑ 13↓ 160.2%
Finish· 26.22 mi
9:49/mi
4:51:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:25:33
Pace11:06 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:25:55
Pace11:08 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:5235:3211:2635:32
11:26
-
10K
6.21 mi12:31:081:10:4811:2435:16
11:21
-0:05
15K
9.32 mi13:05:211:45:0111:1634:13
11:01
-0:20
20K
12.43 mi13:38:552:18:3511:0933:34
10:48
-0:13
Half
13.11 mi13:45:532:25:3311:066:58
10:13
-0:35
25K
15.53 mi14:11:522:51:3211:0325:59
10:43
+0:30
30K
18.64 mi14:49:403:29:2011:1437:48
12:10
+1:27
20M
20.00 mi15:05:343:45:1411:1615:54
11:42
-0:28
21M
21.00 mi15:16:343:56:1411:1511:00
11:00
-0:42
35K
21.75 mi15:24:184:03:5811:137:44
10:20
-0:40
23M
23.00 mi15:37:584:17:3811:1213:40
10:55
+0:35
24M
24.00 mi15:48:214:28:0111:1010:23
10:23
-0:32
40K
24.85 mi15:57:374:37:1711:099:16
10:50
+0:27
25.2M
25.20 mi16:01:484:41:2811:104:11
12:08
+1:18
Finish
26.22 mi16:11:484:51:2811:0710:00
9:49
-2:19

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

9:49 /mi

Average Pace

11:07 /mi

Slowest Pace

12:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

35:05

12% of race

Time at Steady Pace

2:07:42

44% of race

Time at Slower Pace

2:08:41

44% of race

Average Pace: 11:07 /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 mi11:55:5235:3211:2635:32
11:26
#27964
10K
6.21 mi12:31:081:10:4811:2435:16
11:21
#27724
15K
9.32 mi13:05:211:45:0111:1634:13
11:01
#27391
20K
12.43 mi13:38:552:18:3511:0933:34
10:48
#26990
Half
13.11 mi13:45:532:25:3311:066:58
10:13
#26901
25K
15.53 mi14:11:522:51:3211:0325:59
10:43
#26557
30K
18.64 mi14:49:403:29:2011:1437:48
12:10
#26431
20M
20.00 mi15:05:343:45:1411:1615:54
11:42
#26315
21M
21.00 mi15:16:343:56:1411:1511:00
11:00
#26106
35K
21.75 mi15:24:184:03:5811:137:44
10:20
#26018
23M
23.00 mi15:37:584:17:3811:1213:40
10:55
#25908
24M
24.00 mi15:48:214:28:0111:1010:23
10:23
#25804
40K
24.85 mi15:57:374:37:1711:099:16
10:50
#25724
25.2M
25.20 mi16:01:484:41:2811:104:11
12:08
#25704
Finish
26.22 mi16:11:484:51:2811:0710:00
9:49
#25615
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27964119381193826680(Top 94%)11180(Top 91%)11180(Top 204%)
10K6.21 mi3.10 mi27724+24011783+15511783+15527444(Top 97%)11630(Top 95%)11630(Top 213%)
15K9.32 mi3.11 mi27391+33311586+19711586+19726680(Top 94%)11180(Top 91%)11180(Top 204%)
20K12.43 mi3.11 mi26990+40111361+22511361+22525718(Top 91%)10652(Top 87%)10652(Top 195%)
Half13.11 mi0.68 mi26901+8911313+4811313+4825254(Top 89%)10410(Top 85%)10410(Top 190%)
25K15.53 mi2.42 mi26557+34411111+20211111+20224742(Top 87%)10152(Top 83%)10152(Top 186%)
30K18.64 mi3.11 mi26431+12611063+4811063+4825787(Top 91%)10831(Top 89%)10831(Top 198%)
20M20.00 mi1.36 mi26315+11611011+5211011+5224844(Top 87%)10390(Top 85%)10390(Top 190%)
21M21.00 mi1.00 mi26106+20910911+10010911+10021379(Top 75%)8645(Top 71%)8645(Top 158%)
35K21.75 mi0.75 mi26018+8810864+4710864+4722766(Top 80%)9429(Top 77%)9429(Top 172%)
23M23.00 mi1.25 mi25908+11010811+5310811+5323022(Top 81%)9619(Top 79%)9619(Top 176%)
24M24.00 mi1.00 mi25804+10410776+3510776+3522467(Top 79%)9380(Top 77%)9380(Top 172%)
40K24.85 mi0.85 mi25724+8010749+2710749+2722739(Top 80%)9579(Top 78%)9579(Top 175%)
25.2M25.20 mi0.35 mi25704+2010742+710742+723453(Top 83%)9899(Top 81%)9899(Top 181%)
Finish26.22 mi1.02 mi25615+8910702+4010702+4022297(Top 78%)9329(Top 76%)9329(Top 171%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

26680

Females

11180

F18-39

11180

5K→10K

3.1 - 6.2 mi

Top 97%
×5story building
+79ft-138ft

Overall

27444

Females

11630

F18-39

11630

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

26680

Females

11180

F18-39

11180

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

25718

Females

10652

F18-39

10652

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

25254

Females

10410

F18-39

10410

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

24742

Females

10152

F18-39

10152

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25787

Females

10831

F18-39

10831

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

24844

Females

10390

F18-39

10390

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21379

Females

8645

F18-39

8645

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

22766

Females

9429

F18-39

9429

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

23022

Females

9619

F18-39

9619

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22467

Females

9380

F18-39

9380

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22739

Females

9579

F18-39

9579

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23453

Females

9899

F18-39

9899

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22297

Females

9329

F18-39

9329

Passing Analysis

Category:
Athletes Passed
2420
Passed By
71
Net Change
+2349
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27964
5K → 10K2488+240#27964#27724
10K → 15K3330+333#27724#27391
15K → 20K4032+401#27391#26990
20K → Half890+89#26990#26901
Half → 25K3462+344#26901#26557
25K → 30K16842+126#26557#26431
30K → 20M1193+116#26431#26315
20M → 21M2112+209#26315#26106
21M → 35K902+88#26106#26018
35K → 23M1122+110#26018#25908
23M → 24M1062+104#25908#25804
24M → 40K811+80#25804#25724
40K → 25.2M233+20#25724#25704
25.2M → Finish912+89#25704#25615
TOTALS242071+2349
📊

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