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BOSTON MARATHON 2023

Daniel Cohen

Bib: 25879•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:24
Rank: #9898
Start → 5K
23:24 | 7:32/mi
10K· 6.21 mi
46:59
Rank: #10564 (-666)
5K → 10K
23:35 | 7:35/mi
15K· 9.32 mi
1:10:46
Rank: #10860 (-296)
10K → 15K
23:47 | 7:39/mi
20K· 12.43 mi
1:34:30
Rank: #10747 (+113)
15K → 20K
23:44 | 7:38/mi
Half· 13.11 mi
1:39:36
Rank: #10702 (+45)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:58:08
Rank: #10517 (+185)
Half → 25K
18:32 | 7:39/mi
30K· 18.64 mi
2:22:33
Rank: #10335 (+182)
25K → 30K
24:25 | 7:52/mi
20M
2:33:09
Rank: #10217 (+118)
30K → 20M
10:36 | 7:48/mi
21M
2:41:16
Rank: #10047 (+170)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:46:55
Rank: #9979 (+68)
21M → 35K
5:39 | 7:33/mi
23M
2:56:49
Rank: #9903 (+76)
35K → 23M
9:54 | 7:54/mi
24M
3:04:30
Rank: #9829 (+74)
23M → 24M
7:41 | 7:41/mi
40K· 24.85 mi
3:11:19
Rank: #9811 (+18)
24M → 40K
6:49 | 7:58/mi
25.2M
3:14:09
Rank: #9761 (+50)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:21:38
Rank: #9628 (+133)
25.2M → Finish
7:29 | 7:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:36
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:42:02
Pace7:47 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:39:0323:247:3223:24
7:32
-
10K
6.21 mi12:02:3846:597:3423:35
7:35
+0:03
15K
9.32 mi12:26:251:10:467:3623:47
7:39
+0:04
20K
12.43 mi12:50:091:34:307:3623:44
7:38
-0:01
Half
13.11 mi12:55:151:39:367:365:06
7:29
-0:09
25K
15.53 mi13:13:471:58:087:3618:32
7:39
+0:10
30K
18.64 mi13:38:122:22:337:3924:25
7:52
+0:13
20M
20.00 mi13:48:482:33:097:3910:36
7:48
-0:04
21M
21.00 mi13:56:552:41:167:418:07
8:07
+0:19
35K
21.75 mi14:02:342:46:557:415:39
7:33
-0:34
23M
23.00 mi14:12:282:56:497:419:54
7:54
+0:21
24M
24.00 mi14:20:093:04:307:417:41
7:41
-0:13
40K
24.85 mi14:26:583:11:197:426:49
7:58
+0:17
25.2M
25.20 mi14:29:483:14:097:422:50
8:13
+0:15
Finish
26.22 mi14:37:173:21:387:427:29
7:21
-0:52

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

7:21 /mi

Average Pace

7:42 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:41

95% of race

Time at Steady Pace

10:57

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:41 /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 mi11:39:0323:247:3223:24
7:32
#9898
10K
6.21 mi12:02:3846:597:3423:35
7:35
#10564
15K
9.32 mi12:26:251:10:467:3623:47
7:39
#10860
20K
12.43 mi12:50:091:34:307:3623:44
7:38
#10747
Half
13.11 mi12:55:151:39:367:365:06
7:29
#10702
25K
15.53 mi13:13:471:58:087:3618:32
7:39
#10517
30K
18.64 mi13:38:122:22:337:3924:25
7:52
#10335
20M
20.00 mi13:48:482:33:097:3910:36
7:48
#10217
21M
21.00 mi13:56:552:41:167:418:07
8:07
#10047
35K
21.75 mi14:02:342:46:557:415:39
7:33
#9979
23M
23.00 mi14:12:282:56:497:419:54
7:54
#9903
24M
24.00 mi14:20:093:04:307:417:41
7:41
#9829
40K
24.85 mi14:26:583:11:197:426:49
7:58
#9811
25.2M
25.20 mi14:29:483:14:097:422:50
8:13
#9761
Finish
26.22 mi14:37:173:21:387:427:29
7:21
#9628
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi98988077807711447(Top 43%)8830(Top 58%)8830(Top 167%)
10K6.21 mi3.10 mi10564-6668448-3718448-37111223(Top 42%)8761(Top 58%)8761(Top 166%)
15K9.32 mi3.11 mi10860-2968583-1358583-13511447(Top 43%)8830(Top 58%)8830(Top 167%)
20K12.43 mi3.11 mi10747+1138516+678516+6710394(Top 39%)8283(Top 55%)8283(Top 157%)
Half13.11 mi0.68 mi10702+458500+168500+169972(Top 37%)8082(Top 53%)8082(Top 153%)
25K15.53 mi2.42 mi10517+1858399+1018399+1019861(Top 37%)7903(Top 52%)7903(Top 150%)
30K18.64 mi3.11 mi10335+1828251+1488251+1489807(Top 37%)7723(Top 51%)7723(Top 146%)
20M20.00 mi1.36 mi10217+1188172+798172+798847(Top 33%)7106(Top 47%)7106(Top 134%)
21M21.00 mi1.00 mi10047+1708059+1138059+1138113(Top 30%)6549(Top 43%)6549(Top 124%)
35K21.75 mi0.75 mi9979+688008+518008+518895(Top 33%)7019(Top 46%)7019(Top 133%)
23M23.00 mi1.25 mi9903+767938+707938+709112(Top 34%)7011(Top 46%)7011(Top 133%)
24M24.00 mi1.00 mi9829+747866+727866+728955(Top 34%)6869(Top 45%)6869(Top 130%)
40K24.85 mi0.85 mi9811+187824+427824+429845(Top 37%)7261(Top 48%)7261(Top 137%)
25.2M25.20 mi0.35 mi9761+507789+357789+357769(Top 29%)6045(Top 40%)6045(Top 114%)
Finish26.22 mi1.02 mi9628+1337687+1027687+1027403(Top 28%)5813(Top 38%)5813(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

11447

Males

8830

M18-39

8830

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11223

Males

8761

M18-39

8761

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

11447

Males

8830

M18-39

8830

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

10394

Males

8283

M18-39

8283

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9972

Males

8082

M18-39

8082

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9861

Males

7903

M18-39

7903

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9807

Males

7723

M18-39

7723

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8847

Males

7106

M18-39

7106

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8113

Males

6549

M18-39

6549

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8895

Males

7019

M18-39

7019

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9112

Males

7011

M18-39

7011

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

8955

Males

6869

M18-39

6869

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9845

Males

7261

M18-39

7261

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7769

Males

6045

M18-39

6045

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7403

Males

5813

M18-39

5813

Passing Analysis

Category:
Athletes Passed
1830*
Passed By
1559
Net Change
+270
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9898
5K → 10K86751-666#9898#10564
10K → 15K98394-296#10564#10860
15K → 20K21097+113#10860#10747
20K → Half5712+45#10747#10702
Half → 25K22035+185#10702#10517
25K → 30K25674+182#10517#10335
30K → 20M142*24+118#10335#10217
20M → 21M18212+170#10217#10047
21M → 35K83*15+68#10047#9979
35K → 23M11236+76#9979#9903
23M → 24M10026+74#9903#9829
24M → 40K76*58+18#9829#9811
40K → 25.2M588+50#9811#9761
25.2M → Finish150*17+133#9761#9628
TOTALS1830*1559+270

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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