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BOSTON MARATHON 2023

Samuel Harrison

Bib: 3237•M

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Male)
#0 / 15176
Top 48%
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
23:04
Rank: #9018
Start → 5K
23:04 | 7:25/mi
10K· 6.21 mi
46:32
Rank: #9906 (-888)
5K → 10K
23:28 | 7:33/mi
15K· 9.32 mi
1:09:40
Rank: #9808 (+98)
10K → 15K
23:08 | 7:27/mi
20K· 12.43 mi
1:33:16
Rank: #9869 (-61)
15K → 20K
23:36 | 7:36/mi
Half· 13.11 mi
1:38:26
Rank: #9921 (-52)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:56:48
Rank: #9801 (+120)
Half → 25K
18:22 | 7:35/mi
30K· 18.64 mi
2:20:59
Rank: #9681 (+120)
25K → 30K
24:11 | 7:47/mi
20M
2:31:38
Rank: #9610 (+71)
30K → 20M
10:39 | 7:50/mi
21M
2:40:03
Rank: #9605 (+5)
20M → 21M
8:25 | 8:25/mi
35K· 21.75 mi
2:45:41
Rank: #9550 (+55)
21M → 35K
5:38 | 7:32/mi
23M
2:55:34
Rank: #9477 (+73)
35K → 23M
9:53 | 7:54/mi
24M
3:03:28
Rank: #9521 (-44)
23M → 24M
7:54 | 7:54/mi
40K· 24.85 mi
3:10:01
Rank: #9415 (+106)
24M → 40K
6:33 | 7:40/mi
25.2M
3:12:28
Rank: #9254 (+161)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
3:19:12
Rank: #8941 (+313)
25.2M → Finish
6:44 | 6:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:26
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:40:46
Pace7:41 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0423:047:2523:04
7:25
-
10K
6.21 mi11:12:3246:327:2923:28
7:33
+0:08
15K
9.32 mi11:35:401:09:407:2823:08
7:27
-0:06
20K
12.43 mi11:59:161:33:167:3023:36
7:36
+0:09
Half
13.11 mi12:04:261:38:267:315:10
7:34
-0:02
25K
15.53 mi12:22:481:56:487:3118:22
7:35
+0:01
30K
18.64 mi12:46:592:20:597:3424:11
7:47
+0:12
20M
20.00 mi12:57:382:31:387:3510:39
7:50
+0:03
21M
21.00 mi13:06:032:40:037:378:25
8:25
+0:35
35K
21.75 mi13:11:412:45:417:375:38
7:32
-0:53
23M
23.00 mi13:21:342:55:347:389:53
7:54
+0:22
24M
24.00 mi13:29:283:03:287:397:54
7:54
0:00
40K
24.85 mi13:36:013:10:017:396:33
7:40
-0:14
25.2M
25.20 mi13:38:283:12:287:382:27
7:06
-0:34
Finish
26.22 mi13:45:123:19:127:366:44
6:36
-0:30

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

6:36 /mi

Average Pace

7:36 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

9:11

5% of race

Time at Steady Pace

2:08:59

65% of race

Time at Slower Pace

1:01:02

31% of race

Average Pace: 7:36 /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 mi10:49:0423:047:2523:04
7:25
#9018
10K
6.21 mi11:12:3246:327:2923:28
7:33
#9906
15K
9.32 mi11:35:401:09:407:2823:08
7:27
#9808
20K
12.43 mi11:59:161:33:167:3023:36
7:36
#9869
Half
13.11 mi12:04:261:38:267:315:10
7:34
#9921
25K
15.53 mi12:22:481:56:487:3118:22
7:35
#9801
30K
18.64 mi12:46:592:20:597:3424:11
7:47
#9681
20M
20.00 mi12:57:382:31:387:3510:39
7:50
#9610
21M
21.00 mi13:06:032:40:037:378:25
8:25
#9605
35K
21.75 mi13:11:412:45:417:375:38
7:32
#9550
23M
23.00 mi13:21:342:55:347:389:53
7:54
#9477
24M
24.00 mi13:29:283:03:287:397:54
7:54
#9521
40K
24.85 mi13:36:013:10:017:396:33
7:40
#9415
25.2M
25.20 mi13:38:283:12:287:382:27
7:06
#9254
Finish
26.22 mi13:45:123:19:127:366:44
6:36
#8941
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9018760576059713(Top 36%)7983(Top 53%)7983(Top 151%)
10K6.21 mi3.10 mi9906-8888094-4898094-48910889(Top 41%)8618(Top 57%)8618(Top 163%)
15K9.32 mi3.11 mi9808+988044+508044+509713(Top 36%)7983(Top 53%)7983(Top 151%)
20K12.43 mi3.11 mi9869-618076-328076-3210051(Top 38%)8097(Top 53%)8097(Top 153%)
Half13.11 mi0.68 mi9921-528103-278103-2710725(Top 40%)8451(Top 56%)8451(Top 160%)
25K15.53 mi2.42 mi9801+1208022+818022+819341(Top 35%)7629(Top 50%)7629(Top 144%)
30K18.64 mi3.11 mi9681+1207912+1107912+1109223(Top 35%)7406(Top 49%)7406(Top 140%)
20M20.00 mi1.36 mi9610+717841+717841+719127(Top 34%)7265(Top 48%)7265(Top 137%)
21M21.00 mi1.00 mi9605+57825+167825+169932(Top 37%)7561(Top 50%)7561(Top 143%)
35K21.75 mi0.75 mi9550+557774+517774+518703(Top 33%)6920(Top 46%)6920(Top 131%)
23M23.00 mi1.25 mi9477+737709+657709+659015(Top 34%)6969(Top 46%)6969(Top 132%)
24M24.00 mi1.00 mi9521-447704+57704+510488(Top 39%)7643(Top 50%)7643(Top 145%)
40K24.85 mi0.85 mi9415+1067605+997605+997695(Top 29%)6059(Top 40%)6059(Top 115%)
25.2M25.20 mi0.35 mi9254+1617501+1047501+1042185(Top 8%)2041(Top 13%)2041(Top 39%)
Finish26.22 mi1.02 mi8941+3137315+1867315+1863041(Top 11%)2750(Top 18%)2750(Top 52%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9713

Males

7983

M18-39

7983

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10889

Males

8618

M18-39

8618

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9713

Males

7983

M18-39

7983

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10051

Males

8097

M18-39

8097

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

10725

Males

8451

M18-39

8451

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9341

Males

7629

M18-39

7629

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9223

Males

7406

M18-39

7406

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9127

Males

7265

M18-39

7265

20M→21M

20.0 - 21.0 mi

Top 37%
×8stories
+106ft-24ft

Overall

9932

Males

7561

M18-39

7561

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8703

Males

6920

M18-39

6920

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9015

Males

6969

M18-39

6969

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

10488

Males

7643

M18-39

7643

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7695

Males

6059

M18-39

6059

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2185

Males

2041

M18-39

2041

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3041

Males

2750

M18-39

2750

Passing Analysis

Category:
Athletes Passed
1872*
Passed By
1795
Net Change
+77
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9018
5K → 10K66954-888#9018#9906
10K → 15K225127+98#9906#9808
15K → 20K138*199-61#9808#9869
20K → Half1163-52#9869#9921
Half → 25K17454+120#9921#9801
25K → 30K220*100+120#9801#9681
30K → 20M11645+71#9681#9610
20M → 21M7772+5#9610#9605
21M → 35K7419+55#9605#9550
35K → 23M12148+73#9550#9477
23M → 24M5599-44#9477#9521
24M → 40K121*15+106#9521#9415
40K → 25.2M1610+161#9415#9254
25.2M → Finish3130+313#9254#8941
TOTALS1872*1795+77

* 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