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BOSTON MARATHON 2023

Colin Jacob

Bib: 29535•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
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
27:43
Rank: #20072
Start → 5K
27:43 | 8:55/mi
10K· 6.21 mi
52:18
Rank: #17315 (+2757)
5K → 10K
24:35 | 7:55/mi
15K· 9.32 mi
1:16:34
Rank: #15933 (+1382)
10K → 15K
24:16 | 7:49/mi
20K· 12.43 mi
1:40:49
Rank: #14958 (+975)
15K → 20K
24:15 | 7:48/mi
Half· 13.11 mi
1:46:02
Rank: #14797 (+161)
20K → Half
5:13 | 7:39/mi
25K· 15.53 mi
2:04:58
Rank: #14236 (+561)
Half → 25K
18:56 | 7:49/mi
30K· 18.64 mi
2:29:38
Rank: #13489 (+747)
25K → 30K
24:40 | 7:56/mi
20M
2:40:46
Rank: #13328 (+161)
30K → 20M
11:08 | 8:12/mi
21M
2:49:21
Rank: #13157 (+171)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:55:17
Rank: #13086 (+71)
21M → 35K
5:56 | 7:56/mi
23M
3:05:21
Rank: #12897 (+189)
35K → 23M
10:04 | 8:02/mi
24M
3:13:01
Rank: #12701 (+196)
23M → 24M
7:40 | 7:40/mi
40K· 24.85 mi
3:19:39
Rank: #12539 (+162)
24M → 40K
6:38 | 7:45/mi
25.2M
3:22:32
Rank: #12473 (+66)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:29:58
Rank: #12251 (+222)
25.2M → Finish
7:26 | 7:18/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:46:02
Pace8:05 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:43:56
Pace7:56 /mi
📊Negative Split: 2.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:2127:438:5527:43
8:55
-
10K
6.21 mi12:11:5652:188:2524:35
7:55
-1:00
15K
9.32 mi12:36:121:16:348:1324:16
7:49
-0:06
20K
12.43 mi13:00:271:40:498:0724:15
7:48
-0:01
Half
13.11 mi13:05:401:46:028:055:13
7:39
-0:09
25K
15.53 mi13:24:362:04:588:0318:56
7:49
+0:10
30K
18.64 mi13:49:162:29:388:0224:40
7:56
+0:07
20M
20.00 mi14:00:242:40:468:0211:08
8:12
+0:16
21M
21.00 mi14:08:592:49:218:048:35
8:35
+0:23
35K
21.75 mi14:14:552:55:178:045:56
7:56
-0:39
23M
23.00 mi14:24:593:05:218:0410:04
8:02
+0:06
24M
24.00 mi14:32:393:13:018:037:40
7:40
-0:22
40K
24.85 mi14:39:173:19:398:026:38
7:45
+0:05
25.2M
25.20 mi14:42:103:22:328:022:53
8:22
+0:37
Finish
26.22 mi14:49:363:29:588:017:26
7:18
-1:04

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

7:18 /mi

Average Pace

8:01 /mi

Slowest Pace

8:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

20:19

10% of race

Time at Steady Pace

2:19:20

66% of race

Time at Slower Pace

50:19

24% of race

Average Pace: 8:00 /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 mi11:47:2127:438:5527:43
8:55
#20072
10K
6.21 mi12:11:5652:188:2524:35
7:55
#17315
15K
9.32 mi12:36:121:16:348:1324:16
7:49
#15933
20K
12.43 mi13:00:271:40:498:0724:15
7:48
#14958
Half
13.11 mi13:05:401:46:028:055:13
7:39
#14797
25K
15.53 mi13:24:362:04:588:0318:56
7:49
#14236
30K
18.64 mi13:49:162:29:388:0224:40
7:56
#13489
20M
20.00 mi14:00:242:40:468:0211:08
8:12
#13328
21M
21.00 mi14:08:592:49:218:048:35
8:35
#13157
35K
21.75 mi14:14:552:55:178:045:56
7:56
#13086
23M
23.00 mi14:24:593:05:218:0410:04
8:02
#12897
24M
24.00 mi14:32:393:13:018:037:40
7:40
#12701
40K
24.85 mi14:39:173:19:398:026:38
7:45
#12539
25.2M
25.20 mi14:42:103:22:328:022:53
8:22
#12473
Finish
26.22 mi14:49:363:29:588:017:26
7:18
#12251
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20072121881218812805(Top 48%)9437(Top 62%)9437(Top 179%)
10K6.21 mi3.10 mi17315+275711171+101711171+101714069(Top 53%)9960(Top 66%)9960(Top 188%)
15K9.32 mi3.11 mi15933+138210673+49810673+49812805(Top 48%)9437(Top 62%)9437(Top 179%)
20K12.43 mi3.11 mi14958+97510280+39310280+39311779(Top 44%)8926(Top 59%)8926(Top 169%)
Half13.11 mi0.68 mi14797+16110223+5710223+5711368(Top 43%)8801(Top 58%)8801(Top 167%)
25K15.53 mi2.42 mi14236+5619966+2579966+25711154(Top 42%)8578(Top 57%)8578(Top 162%)
30K18.64 mi3.11 mi13489+7479638+3289638+32810441(Top 39%)8068(Top 53%)8068(Top 153%)
20M20.00 mi1.36 mi13328+1619560+789560+7811638(Top 44%)8543(Top 56%)8543(Top 162%)
21M21.00 mi1.00 mi13157+1719471+899471+8910960(Top 41%)8105(Top 53%)8105(Top 153%)
35K21.75 mi0.75 mi13086+719425+469425+4611603(Top 44%)8395(Top 55%)8395(Top 159%)
23M23.00 mi1.25 mi12897+1899307+1189307+11810040(Top 38%)7509(Top 49%)7509(Top 142%)
24M24.00 mi1.00 mi12701+1969211+969211+968856(Top 33%)6825(Top 45%)6825(Top 129%)
40K24.85 mi0.85 mi12539+1629124+879124+878393(Top 32%)6499(Top 43%)6499(Top 123%)
25.2M25.20 mi0.35 mi12473+669085+399085+398672(Top 33%)6573(Top 43%)6573(Top 124%)
Finish26.22 mi1.02 mi12251+2228969+1168969+1167099(Top 27%)5638(Top 37%)5638(Top 107%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12805

Males

9437

M18-39

9437

5K→10K

3.1 - 6.2 mi

Top 53%
×5stories
+79ft-138ft

Overall

14069

Males

9960

M18-39

9960

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12805

Males

9437

M18-39

9437

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11779

Males

8926

M18-39

8926

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11368

Males

8801

M18-39

8801

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

11154

Males

8578

M18-39

8578

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10441

Males

8068

M18-39

8068

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11638

Males

8543

M18-39

8543

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10960

Males

8105

M18-39

8105

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

11603

Males

8395

M18-39

8395

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

10040

Males

7509

M18-39

7509

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

8856

Males

6825

M18-39

6825

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8393

Males

6499

M18-39

6499

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8672

Males

6573

M18-39

6573

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7099

Males

5638

M18-39

5638

Passing Analysis

Category:
Athletes Passed
7926
Passed By
105
Net Change
+7821
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20072
5K → 10K27614+2757#20072#17315
10K → 15K13897+1382#17315#15933
15K → 20K9761+975#15933#14958
20K → Half1621+161#14958#14797
Half → 25K5621+561#14797#14236
25K → 30K7481+747#14236#13489
30K → 20M17817+161#13489#13328
20M → 21M18817+171#13328#13157
21M → 35K9221+71#13157#13086
35K → 23M20112+189#13086#12897
23M → 24M1993+196#12897#12701
24M → 40K1686+162#12701#12539
40K → 25.2M726+66#12539#12473
25.2M → Finish2308+222#12473#12251
TOTALS7926105+7821
📊

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