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BOSTON MARATHON 2023

John Leachman

Bib: 3058•M

IN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 29%
Gender (Male)
#0 / 15176
Top 43%
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: #9013
Start → 5K
23:04 | 7:25/mi
10K· 6.21 mi
46:07
Rank: #9344 (-331)
5K → 10K
23:03 | 7:25/mi
15K· 9.32 mi
1:09:18
Rank: #9471 (-127)
10K → 15K
23:11 | 7:28/mi
20K· 12.43 mi
1:32:43
Rank: #9489 (-18)
15K → 20K
23:25 | 7:32/mi
Half· 13.11 mi
1:37:48
Rank: #9509 (-20)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:55:59
Rank: #9359 (+150)
Half → 25K
18:11 | 7:30/mi
30K· 18.64 mi
2:19:24
Rank: #8986 (+373)
25K → 30K
23:25 | 7:32/mi
20M
2:29:33
Rank: #8772 (+214)
30K → 20M
10:09 | 7:28/mi
21M
2:37:17
Rank: #8565 (+207)
20M → 21M
7:44 | 7:44/mi
35K· 21.75 mi
2:42:47
Rank: #8520 (+45)
21M → 35K
5:30 | 7:21/mi
23M
2:52:06
Rank: #8331 (+189)
35K → 23M
9:19 | 7:26/mi
24M
2:59:11
Rank: #8129 (+202)
23M → 24M
7:05 | 7:05/mi
40K· 24.85 mi
3:05:17
Rank: #7950 (+179)
24M → 40K
6:06 | 7:08/mi
25.2M
3:07:50
Rank: #7869 (+81)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
3:14:44
Rank: #7657 (+212)
25.2M → Finish
6:54 | 6:46/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:37:48
Pace7:28 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:36:56
Pace7:24 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:0723:047:2523:04
7:25
-
10K
6.21 mi10:50:1046:077:2523:03
7:25
0:00
15K
9.32 mi11:13:211:09:187:2623:11
7:28
+0:03
20K
12.43 mi11:36:461:32:437:2823:25
7:32
+0:04
Half
13.11 mi11:41:511:37:487:285:05
7:27
-0:05
25K
15.53 mi12:00:021:55:597:2818:11
7:30
+0:03
30K
18.64 mi12:23:272:19:247:2923:25
7:32
+0:02
20M
20.00 mi12:33:362:29:337:2910:09
7:28
-0:04
21M
21.00 mi12:41:202:37:177:297:44
7:44
+0:16
35K
21.75 mi12:46:502:42:477:295:30
7:21
-0:23
23M
23.00 mi12:56:092:52:067:299:19
7:26
+0:05
24M
24.00 mi13:03:142:59:117:287:05
7:05
-0:21
40K
24.85 mi13:09:203:05:177:276:06
7:08
+0:03
25.2M
25.20 mi13:11:533:07:507:272:33
7:24
+0:16
Finish
26.22 mi13:18:473:14:447:266:54
6:46
-0:38

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

6:46 /mi

Average Pace

7:26 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:34

43% of race

Time at Steady Pace

1:51:10

57% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:26 /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 mi10:27:0723:047:2523:04
7:25
#9013
10K
6.21 mi10:50:1046:077:2523:03
7:25
#9344
15K
9.32 mi11:13:211:09:187:2623:11
7:28
#9471
20K
12.43 mi11:36:461:32:437:2823:25
7:32
#9489
Half
13.11 mi11:41:511:37:487:285:05
7:27
#9509
25K
15.53 mi12:00:021:55:597:2818:11
7:30
#9359
30K
18.64 mi12:23:272:19:247:2923:25
7:32
#8986
20M
20.00 mi12:33:362:29:337:2910:09
7:28
#8772
21M
21.00 mi12:41:202:37:177:297:44
7:44
#8565
35K
21.75 mi12:46:502:42:477:295:30
7:21
#8520
23M
23.00 mi12:56:092:52:067:299:19
7:26
#8331
24M
24.00 mi13:03:142:59:117:287:05
7:05
#8129
40K
24.85 mi13:09:203:05:177:276:06
7:08
#7950
25.2M
25.20 mi13:11:533:07:507:272:33
7:24
#7869
Finish
26.22 mi13:18:473:14:447:266:54
6:46
#7657
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9013760076009858(Top 37%)8060(Top 53%)8060(Top 153%)
10K6.21 mi3.10 mi9344-3317785-1857785-1859778(Top 37%)8040(Top 53%)8040(Top 152%)
15K9.32 mi3.11 mi9471-1277852-677852-679858(Top 37%)8060(Top 53%)8060(Top 153%)
20K12.43 mi3.11 mi9489-187851+17851+19594(Top 36%)7847(Top 52%)7847(Top 148%)
Half13.11 mi0.68 mi9509-207863-127863-129729(Top 37%)7922(Top 52%)7922(Top 150%)
25K15.53 mi2.42 mi9359+1507759+1047759+1048768(Top 33%)7293(Top 48%)7293(Top 138%)
30K18.64 mi3.11 mi8986+3737494+2657494+2657466(Top 28%)6364(Top 42%)6364(Top 120%)
20M20.00 mi1.36 mi8772+2147346+1487346+1486593(Top 25%)5712(Top 38%)5712(Top 108%)
21M21.00 mi1.00 mi8565+2077193+1537193+1535814(Top 22%)5066(Top 33%)5066(Top 96%)
35K21.75 mi0.75 mi8520+457150+437150+437461(Top 28%)6165(Top 41%)6165(Top 117%)
23M23.00 mi1.25 mi8331+1897017+1337017+1336108(Top 23%)5260(Top 35%)5260(Top 100%)
24M24.00 mi1.00 mi8129+2026865+1526865+1525124(Top 19%)4524(Top 30%)4524(Top 86%)
40K24.85 mi0.85 mi7950+1796738+1276738+1274558(Top 17%)4040(Top 27%)4040(Top 76%)
25.2M25.20 mi0.35 mi7869+816681+576681+573447(Top 13%)3130(Top 21%)3130(Top 59%)
Finish26.22 mi1.02 mi7657+2126519+1626519+1623934(Top 15%)3490(Top 23%)3490(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21stories
+97ft-345ft

Overall

9858

Males

8060

M18-39

8060

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

9778

Males

8040

M18-39

8040

10K→15K

6.2 - 9.3 mi

Top 37%
×3stories
+67ft-78ft

Overall

9858

Males

8060

M18-39

8060

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9594

Males

7847

M18-39

7847

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9729

Males

7922

M18-39

7922

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

8768

Males

7293

M18-39

7293

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7466

Males

6364

M18-39

6364

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6593

Males

5712

M18-39

5712

20M→21M

20.0 - 21.0 mi

Top 22%
×8stories
+106ft-24ft

Overall

5814

Males

5066

M18-39

5066

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7461

Males

6165

M18-39

6165

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6108

Males

5260

M18-39

5260

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5124

Males

4524

M18-39

4524

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4558

Males

4040

M18-39

4040

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3447

Males

3130

M18-39

3130

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

3934

Males

3490

M18-39

3490

Passing Analysis

Category:
Athletes Passed
2365*
Passed By
1009
Net Change
+1356
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9013
5K → 10K143474-331#9013#9344
10K → 15K112239-127#9344#9471
15K → 20K134152-18#9471#9489
20K → Half1838-20#9489#9509
Half → 25K19444+150#9509#9359
25K → 30K397*24+373#9359#8986
30K → 20M2184+214#8986#8772
20M → 21M2114+207#8772#8565
21M → 35K6217+45#8565#8520
35K → 23M1978+189#8520#8331
23M → 24M2031+202#8331#8129
24M → 40K1812+179#8129#7950
40K → 25.2M832+81#7950#7869
25.2M → Finish2120+212#7869#7657
TOTALS2365*1009+1356

* 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