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BOSTON MARATHON 2023

Tom Johnson

Bib: 11723•M

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 29%
Masters (Masters Men)
#0 / 9891
Top 15%
Division (M50-54)
#0 / 2052
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:01/mi
21:47
↑ 97↓ 3451.5%
10K· 6.21 mi
6:39/mi
42:28
↑ 79↓ 1380.4%
15K· 9.32 mi
6:42/mi
1:03:16
↑ 67↓ 78
20K· 12.43 mi
6:50/mi
1:24:30
↑ 106↓ 860.1%
Half· 13.11 mi
6:49/mi
1:29:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:47:43
↑ 66↓ 880.2%
30K· 18.64 mi
7:05/mi
2:09:43
↑ 181↓ 1480.2%
20M
7:08/mi
2:19:25
↑ 64↓ 500.2%
21M
7:33/mi
2:26:58
↑ 106↓ 241.6%
35K· 21.75 mi
6:37/mi
2:31:55
↑ 17↓ 861.7%
23M
6:49/mi
2:40:27
↑ 23↓ 630.6%
24M
6:49/mi
2:47:16
↓ 821.3%
40K· 24.85 mi
6:55/mi
2:53:11
↓ 200.3%
25.2M
7:32/mi
2:55:47
↑ 13↓ 160.2%
Finish· 26.22 mi
6:43/mi
3:02:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:09
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:33:29
Pace7:08 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4721:477:0121:47
7:01
-
10K
6.21 mi11:09:2842:286:5020:41
6:39
-0:22
15K
9.32 mi11:30:161:03:166:4720:48
6:42
+0:03
20K
12.43 mi11:51:301:24:306:4821:14
6:50
+0:08
Half
13.11 mi11:56:091:29:096:484:39
6:49
-0:01
25K
15.53 mi12:14:431:47:436:5618:34
7:39
+0:50
30K
18.64 mi12:36:432:09:436:5822:00
7:05
-0:34
20M
20.00 mi12:46:252:19:256:589:42
7:08
+0:03
21M
21.00 mi12:53:582:26:587:007:33
7:33
+0:25
35K
21.75 mi12:58:552:31:556:594:57
6:37
-0:56
23M
23.00 mi13:07:272:40:276:598:32
6:49
+0:12
24M
24.00 mi13:14:162:47:166:586:49
6:49
0:00
40K
24.85 mi13:20:112:53:116:585:55
6:55
+0:06
25.2M
25.20 mi13:22:472:55:476:592:36
7:32
+0:37
Finish
26.22 mi13:29:383:02:386:586:51
6:43
-0:49

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

6:37 /mi

Average Pace

6:58 /mi

Slowest Pace

7:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:55

84% of race

Time at Steady Pace

28:43

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:58 /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 mi10:48:4721:477:0121:47
7:01
#6304
10K
6.21 mi11:09:2842:286:5020:41
6:39
#5253
15K
9.32 mi11:30:161:03:166:4720:48
6:42
#4881
20K
12.43 mi11:51:301:24:306:4821:14
6:50
#4842
Half
13.11 mi11:56:091:29:096:484:39
6:49
#4867
25K
15.53 mi12:14:431:47:436:5618:34
7:39
#5791
30K
18.64 mi12:36:432:09:436:5822:00
7:05
#5574
20M
20.00 mi12:46:252:19:256:589:42
7:08
#5484
21M
21.00 mi12:53:582:26:587:007:33
7:33
#5403
35K
21.75 mi12:58:552:31:556:594:57
6:37
#5291
23M
23.00 mi13:07:272:40:276:598:32
6:49
#5086
24M
24.00 mi13:14:162:47:166:586:49
6:49
#4981
40K
24.85 mi13:20:112:53:116:585:55
6:55
#4886
25.2M
25.20 mi13:22:472:55:476:592:36
7:32
#4851
Finish
26.22 mi13:29:383:02:386:586:51
6:43
#4748
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi6304574057404088(Top 15%)3837(Top 25%)3837(Top 187%)
10K6.21 mi3.10 mi5253+10514859+8814859+8813953(Top 15%)3723(Top 25%)3723(Top 181%)
15K9.32 mi3.11 mi4881+3724540+3194540+3194088(Top 15%)3837(Top 25%)3837(Top 187%)
20K12.43 mi3.11 mi4842+394509+314509+314766(Top 18%)4428(Top 29%)4428(Top 216%)
Half13.11 mi0.68 mi4867-254532-234532-235346(Top 20%)4929(Top 32%)4929(Top 240%)
25K15.53 mi2.42 mi5791-9245313-7815313-7819937(Top 37%)7940(Top 52%)7940(Top 387%)
30K18.64 mi3.11 mi5574+2175123+1905123+1904821(Top 18%)4443(Top 29%)4443(Top 217%)
20M20.00 mi1.36 mi5484+905044+795044+794793(Top 18%)4373(Top 29%)4373(Top 213%)
21M21.00 mi1.00 mi5403+814968+764968+764820(Top 18%)4347(Top 29%)4347(Top 212%)
35K21.75 mi0.75 mi5291+1124867+1014867+1013138(Top 12%)2940(Top 19%)2940(Top 143%)
23M23.00 mi1.25 mi5086+2054678+1894678+1892764(Top 10%)2590(Top 17%)2590(Top 126%)
24M24.00 mi1.00 mi4981+1054588+904588+903757(Top 14%)3443(Top 23%)3443(Top 168%)
40K24.85 mi0.85 mi4886+954508+804508+803444(Top 13%)3145(Top 21%)3145(Top 153%)
25.2M25.20 mi0.35 mi4851+354476+324476+324072(Top 15%)3614(Top 24%)3614(Top 176%)
Finish26.22 mi1.02 mi4748+1034385+914385+913638(Top 14%)3252(Top 21%)3252(Top 158%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21story building
+97ft-345ft

Overall

4088

Males

3837

M50-54

3837

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

3953

Males

3723

M50-54

3723

10K→15K

6.2 - 9.3 mi

Top 15%
×3story building
+67ft-78ft

Overall

4088

Males

3837

M50-54

3837

15K→20K

9.3 - 12.4 mi

Top 18%
×5story building
+106ft-86ft

Overall

4766

Males

4428

M50-54

4428

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5346

Males

4929

M50-54

4929

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

9937

Males

7940

M50-54

7940

25K→30K

15.5 - 18.6 mi

Top 18%
×9story building
+181ft-148ft

Overall

4821

Males

4443

M50-54

4443

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

4793

Males

4373

M50-54

4373

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

4820

Males

4347

M50-54

4347

21M→35K

21.0 - 21.8 mi

Top 12%
×7story building
+17ft-86ft

Overall

3138

Males

2940

M50-54

2940

35K→23M

21.8 - 23.0 mi

Top 10%
×5story building
+23ft-63ft

Overall

2764

Males

2590

M50-54

2590

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3757

Males

3443

M50-54

3443

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3444

Males

3145

M50-54

3145

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4072

Males

3614

M50-54

3614

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2story building
+22ft-21ft

Overall

3638

Males

3252

M50-54

3252

Passing Analysis

Category:
Athletes Passed
2740
Passed By
1184
Net Change
+1556
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6304
5K → 10K106211+1051#6304#5253
10K → 15K38614+372#5253#4881
15K → 20K12384+39#4881#4842
20K → Half2045-25#4842#4867
Half → 25K7931-924#4867#5791
25K → 30K24225+217#5791#5574
30K → 20M10616+90#5574#5484
20M → 21M10625+81#5484#5403
21M → 35K1142+112#5403#5291
35K → 23M2083+205#5291#5086
23M → 24M1127+105#5086#4981
24M → 40K1049+95#4981#4886
40K → 25.2M372+35#4886#4851
25.2M → Finish11310+103#4851#4748
TOTALS27401184+1556
📊

Passing Visuals

Category:
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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