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BOSTON MARATHON 2024

Justine Cohen

Bib: 21777•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 33%
Gender (Female)
#0 / 10924
Top 18%
Masters (Masters Women)
#0 / 6263
Top 8%
Division (F50-54)
#0 / 1187
Top 3%
Race Day Weather
55°/45°F
scattered 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
7:42/mi
23:54
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
48:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:48/mi
1:12:17
↑ 67↓ 78
20K· 12.43 mi
7:50/mi
1:36:38
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:41:52
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
2:00:49
↑ 66↓ 880.2%
30K· 18.64 mi
7:59/mi
2:25:37
↑ 181↓ 1480.2%
20M
8:01/mi
2:36:31
↑ 64↓ 500.2%
21M
8:21/mi
2:44:52
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:50:23
↑ 17↓ 861.7%
23M
8:03/mi
3:00:28
↑ 23↓ 630.6%
24M
7:57/mi
3:08:25
↓ 821.3%
40K· 24.85 mi
8:07/mi
3:15:21
↓ 200.3%
25.2M
8:59/mi
3:18:27
↑ 13↓ 160.2%
Finish· 26.22 mi
7:35/mi
3:26:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:52
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time1:44:19
Pace7:57 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5023:547:4223:54
7:42
-
10K
6.21 mi11:44:5848:027:4424:08
7:46
+0:04
15K
9.32 mi12:09:131:12:177:4524:15
7:48
+0:02
20K
12.43 mi12:33:341:36:387:4724:21
7:50
+0:02
Half
13.11 mi12:38:481:41:527:465:14
7:40
-0:10
25K
15.53 mi12:57:452:00:497:4718:57
7:49
+0:09
30K
18.64 mi13:22:332:25:377:4924:48
7:59
+0:10
20M
20.00 mi13:33:272:36:317:5010:54
8:01
+0:02
21M
21.00 mi13:41:482:44:527:518:21
8:21
+0:20
35K
21.75 mi13:47:192:50:237:505:31
7:22
-0:59
23M
23.00 mi13:57:243:00:287:5110:05
8:03
+0:41
24M
24.00 mi14:05:213:08:257:517:57
7:57
-0:06
40K
24.85 mi14:12:173:15:217:526:56
8:07
+0:10
25.2M
25.20 mi14:15:233:18:277:533:06
8:59
+0:52
Finish
26.22 mi14:23:073:26:117:527:44
7:35
-1:24

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

7:22 /mi

Average Pace

7:52 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

13:15

6% of race

Time at Steady Pace

2:33:34

74% of race

Time at Slower Pace

39:22

19% of race

Average Pace: 7:52 /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 mi11:20:5023:547:4223:54
7:42
#12262
10K
6.21 mi11:44:5848:027:4424:08
7:46
#12336
15K
9.32 mi12:09:131:12:177:4524:15
7:48
#12179
20K
12.43 mi12:33:341:36:387:4724:21
7:50
#11724
Half
13.11 mi12:38:481:41:527:465:14
7:40
#11641
25K
15.53 mi12:57:452:00:497:4718:57
7:49
#11133
30K
18.64 mi13:22:332:25:377:4924:48
7:59
#10324
20M
20.00 mi13:33:272:36:317:5010:54
8:01
#9964
21M
21.00 mi13:41:482:44:527:518:21
8:21
#9589
35K
21.75 mi13:47:192:50:237:505:31
7:22
#9318
23M
23.00 mi13:57:243:00:287:5110:05
8:03
#9007
24M
24.00 mi14:05:213:08:257:517:57
7:57
#8860
40K
24.85 mi14:12:173:15:217:526:56
8:07
#8697
25.2M
25.20 mi14:15:233:18:277:533:06
8:59
#8621
Finish
26.22 mi14:23:073:26:117:527:44
7:35
#8452
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi122623281328111963(Top 47%)3221(Top 29%)3221(Top 271%)
10K6.21 mi3.10 mi12336-743359-783359-7812391(Top 48%)3401(Top 31%)3401(Top 287%)
15K9.32 mi3.11 mi12179+1573294+653294+6511963(Top 47%)3221(Top 29%)3221(Top 271%)
20K12.43 mi3.11 mi11724+4553067+2273067+22710688(Top 42%)2659(Top 24%)2659(Top 224%)
Half13.11 mi0.68 mi11641+833022+453022+4510398(Top 41%)2488(Top 23%)2488(Top 210%)
25K15.53 mi2.42 mi11133+5082796+2262796+2269033(Top 35%)2019(Top 18%)2019(Top 170%)
30K18.64 mi3.11 mi10324+8092493+3032493+3037773(Top 30%)1681(Top 15%)1681(Top 142%)
20M20.00 mi1.36 mi9964+3602354+1392354+1396922(Top 27%)1521(Top 14%)1521(Top 128%)
21M21.00 mi1.00 mi9589+3752218+1362218+1365568(Top 22%)1113(Top 10%)1113(Top 94%)
35K21.75 mi0.75 mi9318+2712133+852133+854537(Top 18%)712(Top 7%)712(Top 60%)
23M23.00 mi1.25 mi9007+3112040+932040+936053(Top 24%)1479(Top 14%)1479(Top 125%)
24M24.00 mi1.00 mi8860+1472007+332007+336383(Top 25%)1706(Top 16%)1706(Top 144%)
40K24.85 mi0.85 mi8697+1631982+251982+256341(Top 25%)1807(Top 17%)1807(Top 152%)
25.2M25.20 mi0.35 mi8621+761980+21980+26567(Top 26%)1967(Top 18%)1967(Top 166%)
Finish26.22 mi1.02 mi8452+1691936+441936+446131(Top 24%)1717(Top 16%)1717(Top 145%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

11963

Females

3221

F50-54

3221

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12391

Females

3401

F50-54

3401

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

11963

Females

3221

F50-54

3221

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

10688

Females

2659

F50-54

2659

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

10398

Females

2488

F50-54

2488

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9033

Females

2019

F50-54

2019

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

7773

Females

1681

F50-54

1681

30K→20M

18.6 - 20.0 mi

Top 27%
×5story building
+64ft-50ft

Overall

6922

Females

1521

F50-54

1521

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

5568

Females

1113

F50-54

1113

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

4537

Females

712

F50-54

712

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6053

Females

1479

F50-54

1479

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6383

Females

1706

F50-54

1706

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6341

Females

1807

F50-54

1807

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6567

Females

1967

F50-54

1967

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6131

Females

1717

F50-54

1717

Passing Analysis

Category:
Athletes Passed
4430
Passed By
620
Net Change
+3810
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12262
5K → 10K256330-74#12262#12336
10K → 15K301144+157#12336#12179
15K → 20K49035+455#12179#11724
20K → Half885+83#11724#11641
Half → 25K51911+508#11641#11133
25K → 30K8189+809#11133#10324
30K → 20M3699+360#10324#9964
20M → 21M3794+375#9964#9589
21M → 35K2710+271#9589#9318
35K → 23M32615+311#9318#9007
23M → 24M16013+147#9007#8860
24M → 40K18421+163#8860#8697
40K → 25.2M8711+76#8697#8621
25.2M → Finish18213+169#8621#8452
TOTALS4430620+3810
📊

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