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BOSTON MARATHON 2025

April Cobb

Bib: 13836•F

NC

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
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
7:26/mi
23:06
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
47:13
↑ 79↓ 1380.4%
15K· 9.32 mi
7:52/mi
1:11:38
↑ 67↓ 78
20K· 12.43 mi
8:06/mi
1:36:49
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:42:05
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
2:01:40
↑ 66↓ 880.2%
30K· 18.64 mi
8:25/mi
2:27:50
↑ 181↓ 1480.2%
20M
8:44/mi
2:39:42
↑ 64↓ 500.2%
21M
9:18/mi
2:49:00
↑ 106↓ 241.6%
35K· 21.75 mi
8:52/mi
2:55:38
↑ 17↓ 861.7%
23M
9:03/mi
3:06:58
↑ 23↓ 630.6%
24M
9:12/mi
3:16:10
↓ 821.3%
40K· 24.85 mi
9:28/mi
3:24:16
↓ 200.3%
25.2M
11:27/mi
3:28:13
↑ 13↓ 160.2%
Finish· 26.22 mi
9:13/mi
3:37:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:05
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:55:32
Pace8:49 /mi
📊Positive Split: 13.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2123:067:2623:06
7:26
-
10K
6.21 mi11:16:2847:137:3624:07
7:46
+0:20
15K
9.32 mi11:40:531:11:387:4124:25
7:52
+0:06
20K
12.43 mi12:06:041:36:497:4725:11
8:06
+0:14
Half
13.11 mi12:11:201:42:057:475:16
7:43
-0:23
25K
15.53 mi12:30:552:01:407:5019:35
8:05
+0:22
30K
18.64 mi12:57:052:27:507:5626:10
8:25
+0:20
20M
20.00 mi13:08:572:39:427:5911:52
8:44
+0:19
21M
21.00 mi13:18:152:49:008:039:18
9:18
+0:34
35K
21.75 mi13:24:532:55:388:056:38
8:52
-0:26
23M
23.00 mi13:36:133:06:588:0811:20
9:03
+0:11
24M
24.00 mi13:45:253:16:108:109:12
9:12
+0:09
40K
24.85 mi13:53:313:24:168:138:06
9:28
+0:16
25.2M
25.20 mi13:57:283:28:138:163:57
11:27
+1:59
Finish
26.22 mi14:06:523:37:378:189:24
9:13
-2:14

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

7:26 /mi

Average Pace

8:18 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:40

56% of race

Time at Steady Pace

1:14:36

34% of race

Time at Slower Pace

21:21

10% of race

Average Pace: 8:18 /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 mi10:52:2123:067:2623:06
7:26
#11681
10K
6.21 mi11:16:2847:137:3624:07
7:46
#13045
15K
9.32 mi11:40:531:11:387:4124:25
7:52
#13627
20K
12.43 mi12:06:041:36:497:4725:11
8:06
#14178
Half
13.11 mi12:11:201:42:057:475:16
7:43
#14145
25K
15.53 mi12:30:552:01:407:5019:35
8:05
#14156
30K
18.64 mi12:57:052:27:507:5626:10
8:25
#14127
20M
20.00 mi13:08:572:39:427:5911:52
8:44
#14205
21M
21.00 mi13:18:152:49:008:039:18
9:18
#14261
35K
21.75 mi13:24:532:55:388:056:38
8:52
#14409
23M
23.00 mi13:36:133:06:588:0811:20
9:03
#14519
24M
24.00 mi13:45:253:16:108:109:12
9:12
#14704
40K
24.85 mi13:53:313:24:168:138:06
9:28
#14871
25.2M
25.20 mi13:57:283:28:138:163:57
11:27
#15049
Finish
26.22 mi14:06:523:37:378:189:24
9:13
#15293
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi116812627262714914(Top 53%)4541(Top 37%)4541(Top 83%)
10K6.21 mi3.10 mi13045-13643369-7423369-74214488(Top 51%)4246(Top 35%)4246(Top 78%)
15K9.32 mi3.11 mi13627-5823758-3893758-38914914(Top 53%)4541(Top 37%)4541(Top 83%)
20K12.43 mi3.11 mi14178-5514109-3514109-35115689(Top 55%)5034(Top 41%)5034(Top 92%)
Half13.11 mi0.68 mi14145+334090+194090+1913670(Top 48%)3892(Top 32%)3892(Top 71%)
25K15.53 mi2.42 mi14156-114131-414131-4114496(Top 51%)4487(Top 37%)4487(Top 82%)
30K18.64 mi3.11 mi14127+294179-484179-4814285(Top 50%)4527(Top 37%)4527(Top 83%)
20M20.00 mi1.36 mi14205-784248-694248-6915274(Top 54%)5189(Top 42%)5189(Top 95%)
21M21.00 mi1.00 mi14261-564305-574305-5715159(Top 53%)5263(Top 43%)5263(Top 96%)
35K21.75 mi0.75 mi14409-1484400-954400-9517608(Top 62%)6683(Top 55%)6683(Top 122%)
23M23.00 mi1.25 mi14519-1104496-964496-9616556(Top 58%)6197(Top 51%)6197(Top 113%)
24M24.00 mi1.00 mi14704-1854633-1374633-13718357(Top 65%)7222(Top 59%)7222(Top 132%)
40K24.85 mi0.85 mi14871-1674759-1264759-12618614(Top 66%)7430(Top 61%)7430(Top 136%)
25.2M25.20 mi0.35 mi15049-1784880-1214880-12121944(Top 77%)9116(Top 75%)9116(Top 167%)
Finish26.22 mi1.02 mi15293-2445044-1645044-16420057(Top 71%)8172(Top 67%)8172(Top 149%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14914

Females

4541

F18-39

4541

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

14488

Females

4246

F18-39

4246

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14914

Females

4541

F18-39

4541

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15689

Females

5034

F18-39

5034

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13670

Females

3892

F18-39

3892

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

14496

Females

4487

F18-39

4487

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14285

Females

4527

F18-39

4527

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15274

Females

5189

F18-39

5189

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

15159

Females

5263

F18-39

5263

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

17608

Females

6683

F18-39

6683

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

16556

Females

6197

F18-39

6197

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18357

Females

7222

F18-39

7222

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18614

Females

7430

F18-39

7430

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21944

Females

9116

F18-39

9116

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

20057

Females

8172

F18-39

8172

Passing Analysis

Category:
Athletes Passed
1053
Passed By
4665
Net Change
-3612
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11681
5K → 10K171381-1364#11681#13045
10K → 15K74656-582#13045#13627
15K → 20K90641-551#13627#14178
20K → Half4815+33#14178#14145
Half → 25K159170-11#14145#14156
25K → 30K275246+29#14156#14127
30K → 20M91169-78#14127#14205
20M → 21M107163-56#14205#14261
21M → 35K30178-148#14261#14409
35K → 23M73183-110#14409#14519
23M → 24M29214-185#14519#14704
24M → 40K32199-167#14704#14871
40K → 25.2M11189-178#14871#15049
25.2M → Finish17261-244#15049#15293
TOTALS10534665-3612
📊

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