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BOSTON MARATHON 2023

John Callen

Bib: 3942•M

CO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 28%
Gender (Male)
#0 / 15176
Top 42%
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
22:28
Rank: #7683
Start → 5K
22:28 | 7:14/mi
10K· 6.21 mi
44:51
Rank: #7873 (-190)
5K → 10K
22:23 | 7:12/mi
15K· 9.32 mi
1:07:04
Rank: #7718 (+155)
10K → 15K
22:13 | 7:09/mi
20K· 12.43 mi
1:29:46
Rank: #7717 (+1)
15K → 20K
22:42 | 7:18/mi
Half· 13.11 mi
1:34:47
Rank: #7762 (-45)
20K → Half
5:01 | 7:21/mi
25K· 15.53 mi
1:52:48
Rank: #7790 (-28)
Half → 25K
18:01 | 7:26/mi
30K· 18.64 mi
2:17:03
Rank: #8030 (-240)
25K → 30K
24:15 | 7:48/mi
20M
2:27:14
Rank: #7878 (+152)
30K → 20M
10:11 | 7:30/mi
21M
2:35:14
Rank: #7801 (+77)
20M → 21M
8:00 | 8:00/mi
35K· 21.75 mi
2:40:49
Rank: #7807 (-6)
21M → 35K
5:35 | 7:28/mi
23M
2:50:21
Rank: #7735 (+72)
35K → 23M
9:32 | 7:37/mi
24M
2:57:41
Rank: #7641 (+94)
23M → 24M
7:20 | 7:20/mi
40K· 24.85 mi
3:03:58
Rank: #7553 (+88)
24M → 40K
6:17 | 7:21/mi
25.2M
3:06:40
Rank: #7516 (+37)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
3:13:41
Rank: #7349 (+167)
25.2M → Finish
7:01 | 6:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:47
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:38:54
Pace7:33 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:3622:287:1422:28
7:14
-
10K
6.21 mi10:46:5944:517:1322:23
7:12
-0:02
15K
9.32 mi11:09:121:07:047:1222:13
7:09
-0:03
20K
12.43 mi11:31:541:29:467:1322:42
7:18
+0:09
Half
13.11 mi11:36:551:34:477:145:01
7:21
+0:03
25K
15.53 mi11:54:561:52:487:1618:01
7:26
+0:05
30K
18.64 mi12:19:112:17:037:2124:15
7:48
+0:22
20M
20.00 mi12:29:222:27:147:2210:11
7:30
-0:18
21M
21.00 mi12:37:222:35:147:248:00
8:00
+0:30
35K
21.75 mi12:42:572:40:497:245:35
7:28
-0:32
23M
23.00 mi12:52:292:50:217:249:32
7:37
+0:09
24M
24.00 mi12:59:492:57:417:247:20
7:20
-0:17
40K
24.85 mi13:06:063:03:587:246:17
7:21
+0:01
25.2M
25.20 mi13:08:483:06:407:242:42
7:50
+0:29
Finish
26.22 mi13:15:493:13:417:247:01
6:53
-0:57

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

6:53 /mi

Average Pace

7:24 /mi

Slowest Pace

8:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:12

77% of race

Time at Steady Pace

44:29

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:23 /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 mi10:24:3622:287:1422:28
7:14
#7683
10K
6.21 mi10:46:5944:517:1322:23
7:12
#7873
15K
9.32 mi11:09:121:07:047:1222:13
7:09
#7718
20K
12.43 mi11:31:541:29:467:1322:42
7:18
#7717
Half
13.11 mi11:36:551:34:477:145:01
7:21
#7762
25K
15.53 mi11:54:561:52:487:1618:01
7:26
#7790
30K
18.64 mi12:19:112:17:037:2124:15
7:48
#8030
20M
20.00 mi12:29:222:27:147:2210:11
7:30
#7878
21M
21.00 mi12:37:222:35:147:248:00
8:00
#7801
35K
21.75 mi12:42:572:40:497:245:35
7:28
#7807
23M
23.00 mi12:52:292:50:217:249:32
7:37
#7735
24M
24.00 mi12:59:492:57:417:247:20
7:20
#7641
40K
24.85 mi13:06:063:03:587:246:17
7:21
#7553
25.2M
25.20 mi13:08:483:06:407:242:42
7:50
#7516
Finish
26.22 mi13:15:493:13:417:247:01
6:53
#7349
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi7683676767677471(Top 28%)6578(Top 43%)6578(Top 124%)
10K6.21 mi3.10 mi7873-1906891-1246891-1248118(Top 30%)7025(Top 46%)7025(Top 133%)
15K9.32 mi3.11 mi7718+1556772+1196772+1197471(Top 28%)6578(Top 43%)6578(Top 124%)
20K12.43 mi3.11 mi7717+16758+146758+147821(Top 29%)6767(Top 45%)6767(Top 128%)
Half13.11 mi0.68 mi7762-456777-196777-198928(Top 34%)7444(Top 49%)7444(Top 141%)
25K15.53 mi2.42 mi7790-286779-26779-28228(Top 31%)6951(Top 46%)6951(Top 132%)
30K18.64 mi3.11 mi8030-2406893-1146893-1149387(Top 35%)7489(Top 49%)7489(Top 142%)
20M20.00 mi1.36 mi7878+1526778+1156778+1156739(Top 25%)5799(Top 38%)5799(Top 110%)
21M21.00 mi1.00 mi7801+776719+596719+597327(Top 28%)6072(Top 40%)6072(Top 115%)
35K21.75 mi0.75 mi7807-66715+46715+48204(Top 31%)6605(Top 44%)6605(Top 125%)
23M23.00 mi1.25 mi7735+726640+756640+757162(Top 27%)5922(Top 39%)5922(Top 112%)
24M24.00 mi1.00 mi7641+946561+796561+796594(Top 25%)5484(Top 36%)5484(Top 104%)
40K24.85 mi0.85 mi7553+886479+826479+825752(Top 22%)4868(Top 32%)4868(Top 92%)
25.2M25.20 mi0.35 mi7516+376446+336446+335548(Top 21%)4647(Top 31%)4647(Top 88%)
Finish26.22 mi1.02 mi7349+1676317+1296317+1294563(Top 17%)3971(Top 26%)3971(Top 75%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

7471

Males

6578

M18-39

6578

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8118

Males

7025

M18-39

7025

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

7471

Males

6578

M18-39

6578

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

7821

Males

6767

M18-39

6767

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

8928

Males

7444

M18-39

7444

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8228

Males

6951

M18-39

6951

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9387

Males

7489

M18-39

7489

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6739

Males

5799

M18-39

5799

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7327

Males

6072

M18-39

6072

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8204

Males

6605

M18-39

6605

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7162

Males

5922

M18-39

5922

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6594

Males

5484

M18-39

5484

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5752

Males

4868

M18-39

4868

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5548

Males

4647

M18-39

4647

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4563

Males

3971

M18-39

3971

Passing Analysis

Category:
Athletes Passed
1500
Passed By
1166
Net Change
+334
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7683
5K → 10K145335-190#7683#7873
10K → 15K22065+155#7873#7718
15K → 20K114113+1#7718#7717
20K → Half1762-45#7717#7762
Half → 25K82110-28#7762#7790
25K → 30K58298-240#7790#8030
30K → 20M16412+152#8030#7878
20M → 21M11235+77#7878#7801
21M → 35K3642-6#7801#7807
35K → 23M11442+72#7807#7735
23M → 24M11319+94#7735#7641
24M → 40K10416+88#7641#7553
40K → 25.2M436+37#7553#7516
25.2M → Finish17811+167#7516#7349
TOTALS15001166+334
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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