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BOSTON MARATHON 2023

John Seals

Bib: 12810•M

IA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 39%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 43%
Division (M50-54)
#0 / 2052
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:55
Rank: #8643
Start → 5K
22:55 | 7:23/mi
10K· 6.21 mi
46:38
Rank: #10071 (-1428)
5K → 10K
23:43 | 7:38/mi
15K· 9.32 mi
1:09:59
Rank: #10135 (-64)
10K → 15K
23:21 | 7:31/mi
20K· 12.43 mi
1:33:56
Rank: #10335 (-200)
15K → 20K
23:57 | 7:43/mi
Half· 13.11 mi
1:39:07
Rank: #10376 (-41)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:57:53
Rank: #10381 (-5)
Half → 25K
18:46 | 7:44/mi
30K· 18.64 mi
2:23:09
Rank: #10601 (-220)
25K → 30K
25:16 | 8:08/mi
20M
2:34:17
Rank: #10674 (-73)
30K → 20M
11:08 | 8:12/mi
21M
2:42:52
Rank: #10654 (+20)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:48:37
Rank: #10597 (+57)
21M → 35K
5:45 | 7:41/mi
23M
2:58:56
Rank: #10633 (-36)
35K → 23M
10:19 | 8:14/mi
24M
3:06:54
Rank: #10646 (-13)
23M → 24M
7:58 | 7:58/mi
40K· 24.85 mi
3:13:49
Rank: #10607 (+39)
24M → 40K
6:55 | 8:05/mi
25.2M
3:16:45
Rank: #10574 (+33)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:24:05
Rank: #10381 (+193)
25.2M → Finish
7:20 | 7:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:07
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:44:58
Pace8:00 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4722:557:2322:55
7:23
-
10K
6.21 mi11:14:3046:387:3023:43
7:38
+0:15
15K
9.32 mi11:37:511:09:597:3123:21
7:31
-0:07
20K
12.43 mi12:01:481:33:567:3423:57
7:43
+0:12
Half
13.11 mi12:06:591:39:077:345:11
7:36
-0:07
25K
15.53 mi12:25:451:57:537:3518:46
7:44
+0:08
30K
18.64 mi12:51:012:23:097:4125:16
8:08
+0:24
20M
20.00 mi13:02:092:34:177:4311:08
8:12
+0:04
21M
21.00 mi13:10:442:42:527:458:35
8:35
+0:23
35K
21.75 mi13:16:292:48:377:455:45
7:41
-0:54
23M
23.00 mi13:26:482:58:567:4710:19
8:14
+0:33
24M
24.00 mi13:34:463:06:547:477:58
7:58
-0:16
40K
24.85 mi13:41:413:13:497:486:55
8:05
+0:07
25.2M
25.20 mi13:44:373:16:457:482:56
8:30
+0:25
Finish
26.22 mi13:51:573:24:057:477:20
7:12
-1:18

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

7:12 /mi

Average Pace

7:47 /mi

Slowest Pace

8:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:58

64% of race

Time at Steady Pace

1:01:36

30% of race

Time at Slower Pace

11:31

6% of race

Average Pace: 7:47 /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 mi10:50:4722:557:2322:55
7:23
#8643
10K
6.21 mi11:14:3046:387:3023:43
7:38
#10071
15K
9.32 mi11:37:511:09:597:3123:21
7:31
#10135
20K
12.43 mi12:01:481:33:567:3423:57
7:43
#10335
Half
13.11 mi12:06:591:39:077:345:11
7:36
#10376
25K
15.53 mi12:25:451:57:537:3518:46
7:44
#10381
30K
18.64 mi12:51:012:23:097:4125:16
8:08
#10601
20M
20.00 mi13:02:092:34:177:4311:08
8:12
#10674
21M
21.00 mi13:10:442:42:527:458:35
8:35
#10654
35K
21.75 mi13:16:292:48:377:455:45
7:41
#10597
23M
23.00 mi13:26:482:58:567:4710:19
8:14
#10633
24M
24.00 mi13:34:463:06:547:477:58
7:58
#10646
40K
24.85 mi13:41:413:13:497:486:55
8:05
#10607
25.2M
25.20 mi13:44:373:16:457:482:56
8:30
#10574
Finish
26.22 mi13:51:573:24:057:477:20
7:12
#10381
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi86437384738410296(Top 39%)8302(Top 55%)8302(Top 405%)
10K6.21 mi3.10 mi10071-14288187-8038187-80311618(Top 44%)8939(Top 59%)8939(Top 436%)
15K9.32 mi3.11 mi10135-648243-568243-5610296(Top 39%)8302(Top 55%)8302(Top 405%)
20K12.43 mi3.11 mi10335-2008328-858328-8510978(Top 41%)8568(Top 56%)8568(Top 418%)
Half13.11 mi0.68 mi10376-418345-178345-1710938(Top 41%)8577(Top 57%)8577(Top 418%)
25K15.53 mi2.42 mi10381-58333+128333+1210598(Top 40%)8298(Top 55%)8298(Top 404%)
30K18.64 mi3.11 mi10601-2208378-458378-4511866(Top 45%)8742(Top 58%)8742(Top 426%)
20M20.00 mi1.36 mi10674-738389-118389-1111629(Top 44%)8534(Top 56%)8534(Top 416%)
21M21.00 mi1.00 mi10654+208362+278362+2710947(Top 41%)8092(Top 53%)8092(Top 394%)
35K21.75 mi0.75 mi10597+578311+518311+519824(Top 37%)7537(Top 50%)7537(Top 367%)
23M23.00 mi1.25 mi10633-368299+128299+1211445(Top 43%)8192(Top 54%)8192(Top 399%)
24M24.00 mi1.00 mi10646-138283+168283+1610984(Top 41%)7888(Top 52%)7888(Top 384%)
40K24.85 mi0.85 mi10607+398223+608223+6010619(Top 40%)7660(Top 50%)7660(Top 373%)
25.2M25.20 mi0.35 mi10574+338202+218202+219514(Top 36%)7040(Top 46%)7040(Top 343%)
Finish26.22 mi1.02 mi10381+1938080+1228080+1226404(Top 24%)5212(Top 34%)5212(Top 254%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10296

Males

8302

M50-54

8302

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

11618

Males

8939

M50-54

8939

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10296

Males

8302

M50-54

8302

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

10978

Males

8568

M50-54

8568

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10938

Males

8577

M50-54

8577

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

10598

Males

8298

M50-54

8298

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

11866

Males

8742

M50-54

8742

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11629

Males

8534

M50-54

8534

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10947

Males

8092

M50-54

8092

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

9824

Males

7537

M50-54

7537

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

11445

Males

8192

M50-54

8192

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

10984

Males

7888

M50-54

7888

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10619

Males

7660

M50-54

7660

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9514

Males

7040

M50-54

7040

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6404

Males

5212

M50-54

5212

Passing Analysis

Category:
Athletes Passed
1229*
Passed By
2965
Net Change
-1738
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8643
5K → 10K221449-1428#8643#10071
10K → 15K162225-64#10071#10135
15K → 20K94*294-200#10135#10335
20K → Half1354-41#10335#10376
Half → 25K141146-5#10376#10381
25K → 30K106326-220#10381#10601
30K → 20M59*132-73#10601#10674
20M → 21M7757+20#10674#10654
21M → 35K8427+57#10654#10597
35K → 23M71107-36#10597#10633
23M → 24M6881-13#10633#10646
24M → 40K8344+39#10646#10607
40K → 25.2M4613+33#10607#10574
25.2M → Finish20310+193#10574#10381
TOTALS1229*2965-1738

* 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