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BOSTON MARATHON 2023

Esther Hemsani Cohen

Bib: 20321•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 22%
Masters (Masters Women)
#0 / 6539
Top 10%
Division (F40-44)
#0 / 1878
Top 20%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
8:09/mi
25:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:48/mi
49:35
↑ 79↓ 1380.4%
15K· 9.32 mi
7:45/mi
1:13:39
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:38:01
↑ 106↓ 860.1%
Half· 13.11 mi
7:58/mi
1:43:27
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
2:02:42
↑ 66↓ 880.2%
30K· 18.64 mi
8:03/mi
2:27:42
↑ 181↓ 1480.2%
20M
7:59/mi
2:38:33
↑ 64↓ 500.2%
21M
8:07/mi
2:46:40
↑ 106↓ 241.6%
35K· 21.75 mi
7:26/mi
2:52:14
↑ 17↓ 861.7%
23M
7:34/mi
3:01:43
↑ 23↓ 630.6%
24M
7:20/mi
3:09:03
↓ 821.3%
40K· 24.85 mi
7:31/mi
3:15:29
↓ 200.3%
25.2M
7:53/mi
3:18:12
↑ 13↓ 160.2%
Finish· 26.22 mi
7:05/mi
3:25:25
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:43:27
Pace7:53 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:41:58
Pace7:47 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:3025:208:0925:20
8:09
-
10K
6.21 mi11:41:4549:357:5924:15
7:48
-0:21
15K
9.32 mi12:05:491:13:397:5424:04
7:45
-0:03
20K
12.43 mi12:30:111:38:017:5324:22
7:51
+0:06
Half
13.11 mi12:35:371:43:277:535:26
7:58
+0:07
25K
15.53 mi12:54:522:02:427:5419:15
7:56
-0:02
30K
18.64 mi13:19:522:27:427:5525:00
8:03
+0:07
20M
20.00 mi13:30:432:38:337:5610:51
7:59
-0:04
21M
21.00 mi13:38:502:46:407:568:07
8:07
+0:08
35K
21.75 mi13:44:242:52:147:555:34
7:26
-0:41
23M
23.00 mi13:53:533:01:437:549:29
7:34
+0:08
24M
24.00 mi14:01:133:09:037:537:20
7:20
-0:14
40K
24.85 mi14:07:393:15:297:526:26
7:31
+0:11
25.2M
25.20 mi14:10:223:18:127:522:43
7:53
+0:22
Finish
26.22 mi14:17:353:25:257:507:13
7:05
-0:48

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

7:05 /mi

Average Pace

7:50 /mi

Slowest Pace

8:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:00:06

29% of race

Time at Steady Pace

2:25:19

71% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:50 /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 mi11:17:3025:208:0925:20
8:09
#15108
10K
6.21 mi11:41:4549:357:5924:15
7:48
#14240
15K
9.32 mi12:05:491:13:397:5424:04
7:45
#13592
20K
12.43 mi12:30:111:38:017:5324:22
7:51
#13204
Half
13.11 mi12:35:371:43:277:535:26
7:58
#13244
25K
15.53 mi12:54:522:02:427:5419:15
7:56
#13032
30K
18.64 mi13:19:522:27:427:5525:00
8:03
#12665
20M
20.00 mi13:30:432:38:337:5610:51
7:59
#12443
21M
21.00 mi13:38:502:46:407:568:07
8:07
#12148
35K
21.75 mi13:44:242:52:147:555:34
7:26
#11994
23M
23.00 mi13:53:533:01:437:549:29
7:34
#11645
24M
24.00 mi14:01:133:09:037:537:20
7:20
#11383
40K
24.85 mi14:07:393:15:297:526:26
7:31
#11158
25.2M
25.20 mi14:10:223:18:127:522:43
7:53
#11047
Finish
26.22 mi14:17:353:25:257:507:13
7:05
#10794
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi151084712471212264(Top 46%)3051(Top 27%)3051(Top 162%)
10K6.21 mi3.10 mi14240+8684189+5234189+52313171(Top 49%)3526(Top 31%)3526(Top 188%)
15K9.32 mi3.11 mi13592+6483812+3773812+37712264(Top 46%)3051(Top 27%)3051(Top 162%)
20K12.43 mi3.11 mi13204+3883608+2043608+20412102(Top 45%)3025(Top 26%)3025(Top 161%)
Half13.11 mi0.68 mi13244-403629-213629-2114070(Top 53%)4101(Top 36%)4101(Top 218%)
25K15.53 mi2.42 mi13032+2123515+1143515+11412219(Top 46%)3197(Top 28%)3197(Top 170%)
30K18.64 mi3.11 mi12665+3673352+1633352+16311273(Top 42%)2773(Top 24%)2773(Top 148%)
20M20.00 mi1.36 mi12443+2223235+1173235+11710178(Top 38%)2318(Top 20%)2318(Top 123%)
21M21.00 mi1.00 mi12148+2953094+1413094+1418151(Top 31%)1589(Top 14%)1589(Top 85%)
35K21.75 mi0.75 mi11994+1543015+793015+798166(Top 31%)1584(Top 14%)1584(Top 84%)
23M23.00 mi1.25 mi11645+3492844+1712844+1716952(Top 26%)1164(Top 10%)1164(Top 62%)
24M24.00 mi1.00 mi11383+2622726+1182726+1186670(Top 25%)1152(Top 10%)1152(Top 61%)
40K24.85 mi0.85 mi11158+2252629+972629+976901(Top 26%)1332(Top 12%)1332(Top 71%)
25.2M25.20 mi0.35 mi11047+1112590+392590+395920(Top 22%)1051(Top 9%)1051(Top 56%)
Finish26.22 mi1.02 mi10794+2532493+972493+975760(Top 22%)996(Top 9%)996(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

12264

Females

3051

F40-44

3051

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13171

Females

3526

F40-44

3526

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

12264

Females

3051

F40-44

3051

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12102

Females

3025

F40-44

3025

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14070

Females

4101

F40-44

4101

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12219

Females

3197

F40-44

3197

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11273

Females

2773

F40-44

2773

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10178

Females

2318

F40-44

2318

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8151

Females

1589

F40-44

1589

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8166

Females

1584

F40-44

1584

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6952

Females

1164

F40-44

1164

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6670

Females

1152

F40-44

1152

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6901

Females

1332

F40-44

1332

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5920

Females

1051

F40-44

1051

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

5760

Females

996

F40-44

996

Passing Analysis

Category:
Athletes Passed
4595
Passed By
281
Net Change
+4314
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15108
5K → 10K93466+868#15108#14240
10K → 15K66719+648#14240#13592
15K → 20K42537+388#13592#13204
20K → Half1757-40#13204#13244
Half → 25K26149+212#13244#13032
25K → 30K39427+367#13032#12665
30K → 20M24119+222#12665#12443
20M → 21M2994+295#12443#12148
21M → 35K1540+154#12148#11994
35K → 23M3490+349#11994#11645
23M → 24M2631+262#11645#11383
24M → 40K2261+225#11383#11158
40K → 25.2M1121+111#11158#11047
25.2M → Finish2530+253#11047#10794
TOTALS4595281+4314
📊

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