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BOSTON MARATHON 2023

Jason Kotz

Bib: 6657•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 27%
Masters (Masters Men)
#0 / 9891
Top 14%
Division (M45-49)
#0 / 2252
Top 17%
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
6:56/mi
21:32
↑ 97↓ 3451.5%
10K· 6.21 mi
6:49/mi
42:43
↑ 79↓ 1380.4%
15K· 9.32 mi
6:47/mi
1:03:48
↑ 67↓ 78
20K· 12.43 mi
6:53/mi
1:25:10
↑ 106↓ 860.1%
Half· 13.11 mi
6:49/mi
1:29:49
↑ 19↓ 370.5%
25K· 15.53 mi
6:54/mi
1:46:33
↑ 66↓ 880.2%
30K· 18.64 mi
7:06/mi
2:08:35
↑ 181↓ 1480.2%
20M
7:00/mi
2:18:06
↑ 64↓ 500.2%
21M
7:21/mi
2:25:27
↑ 106↓ 241.6%
35K· 21.75 mi
6:45/mi
2:30:30
↑ 17↓ 861.7%
23M
7:03/mi
2:39:20
↑ 23↓ 630.6%
24M
6:50/mi
2:46:10
↓ 821.3%
40K· 24.85 mi
6:53/mi
2:52:03
↓ 200.3%
25.2M
7:21/mi
2:54:35
↑ 13↓ 160.2%
Finish· 26.22 mi
6:26/mi
3:01:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:49
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:31:19
Pace6:58 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:0621:326:5621:32
6:56
-
10K
6.21 mi10:46:1742:436:5221:11
6:49
-0:07
15K
9.32 mi11:07:221:03:486:5121:05
6:47
-0:02
20K
12.43 mi11:28:441:25:106:5121:22
6:53
+0:06
Half
13.11 mi11:33:231:29:496:514:39
6:49
-0:04
25K
15.53 mi11:50:071:46:336:5216:44
6:54
+0:05
30K
18.64 mi12:12:092:08:356:5422:02
7:06
+0:12
20M
20.00 mi12:21:402:18:066:549:31
7:00
-0:06
21M
21.00 mi12:29:012:25:276:567:21
7:21
+0:21
35K
21.75 mi12:34:042:30:306:555:03
6:45
-0:36
23M
23.00 mi12:42:542:39:206:568:50
7:03
+0:18
24M
24.00 mi12:49:442:46:106:556:50
6:50
-0:13
40K
24.85 mi12:55:372:52:036:555:53
6:53
+0:03
25.2M
25.20 mi12:58:092:54:356:562:32
7:21
+0:28
Finish
26.22 mi13:04:423:01:086:556:33
6:26
-0:55

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

6:26 /mi

Average Pace

6:55 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:13

82% of race

Time at Steady Pace

31:55

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:54 /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 mi10:25:0621:326:5621:32
6:56
#5785
10K
6.21 mi10:46:1742:436:5221:11
6:49
#5611
15K
9.32 mi11:07:221:03:486:5121:05
6:47
#5417
20K
12.43 mi11:28:441:25:106:5121:22
6:53
#5351
Half
13.11 mi11:33:231:29:496:514:39
6:49
#5350
25K
15.53 mi11:50:071:46:336:5216:44
6:54
#5269
30K
18.64 mi12:12:092:08:356:5422:02
7:06
#5160
20M
20.00 mi12:21:402:18:066:549:31
7:00
#5020
21M
21.00 mi12:29:012:25:276:567:21
7:21
#4925
35K
21.75 mi12:34:042:30:306:555:03
6:45
#4863
23M
23.00 mi12:42:542:39:206:568:50
7:03
#4762
24M
24.00 mi12:49:442:46:106:556:50
6:50
#4694
40K
24.85 mi12:55:372:52:036:555:53
6:53
#4614
25.2M
25.20 mi12:58:092:54:356:562:32
7:21
#4579
Finish
26.22 mi13:04:423:01:086:556:33
6:26
#4448
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5785530953094971(Top 19%)4615(Top 30%)4615(Top 205%)
10K6.21 mi3.10 mi5611+1745167+1425167+1425458(Top 21%)5028(Top 33%)5028(Top 223%)
15K9.32 mi3.11 mi5417+1945004+1635004+1634971(Top 19%)4615(Top 30%)4615(Top 205%)
20K12.43 mi3.11 mi5351+664953+514953+515158(Top 19%)4768(Top 31%)4768(Top 212%)
Half13.11 mi0.68 mi5350+14951+24951+25332(Top 20%)4915(Top 32%)4915(Top 218%)
25K15.53 mi2.42 mi5269+814880+714880+714959(Top 19%)4588(Top 30%)4588(Top 204%)
30K18.64 mi3.11 mi5160+1094776+1044776+1044870(Top 18%)4482(Top 30%)4482(Top 199%)
20M20.00 mi1.36 mi5020+1404653+1234653+1234064(Top 15%)3764(Top 25%)3764(Top 167%)
21M21.00 mi1.00 mi4925+954568+854568+853888(Top 15%)3596(Top 24%)3596(Top 160%)
35K21.75 mi0.75 mi4863+624515+534515+533879(Top 15%)3573(Top 24%)3573(Top 159%)
23M23.00 mi1.25 mi4762+1014423+924423+924061(Top 15%)3737(Top 25%)3737(Top 166%)
24M24.00 mi1.00 mi4694+684362+614362+613839(Top 14%)3511(Top 23%)3511(Top 156%)
40K24.85 mi0.85 mi4614+804289+734289+733240(Top 12%)2970(Top 20%)2970(Top 132%)
25.2M25.20 mi0.35 mi4579+354257+324257+323197(Top 12%)2920(Top 19%)2920(Top 130%)
Finish26.22 mi1.02 mi4448+1314143+1144143+1142162(Top 8%)2007(Top 13%)2007(Top 89%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21story building
+97ft-345ft

Overall

4971

Males

4615

M45-49

4615

5K→10K

3.1 - 6.2 mi

Top 21%
×5story building
+79ft-138ft

Overall

5458

Males

5028

M45-49

5028

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+67ft-78ft

Overall

4971

Males

4615

M45-49

4615

15K→20K

9.3 - 12.4 mi

Top 19%
×5story building
+106ft-86ft

Overall

5158

Males

4768

M45-49

4768

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5332

Males

4915

M45-49

4915

Half→25K

13.1 - 15.5 mi

Top 19%
×4story building
+66ft-88ft

Overall

4959

Males

4588

M45-49

4588

25K→30K

15.5 - 18.6 mi

Top 18%
×9story building
+181ft-148ft

Overall

4870

Males

4482

M45-49

4482

30K→20M

18.6 - 20.0 mi

Top 15%
×5story building
+64ft-50ft

Overall

4064

Males

3764

M45-49

3764

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

3888

Males

3596

M45-49

3596

21M→35K

21.0 - 21.8 mi

Top 15%
×7story building
+17ft-86ft

Overall

3879

Males

3573

M45-49

3573

35K→23M

21.8 - 23.0 mi

Top 15%
×5story building
+23ft-63ft

Overall

4061

Males

3737

M45-49

3737

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3839

Males

3511

M45-49

3511

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3240

Males

2970

M45-49

2970

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3197

Males

2920

M45-49

2920

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2story building
+22ft-21ft

Overall

2162

Males

2007

M45-49

2007

Passing Analysis

Category:
Athletes Passed
1818
Passed By
481
Net Change
+1337
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5785
5K → 10K302128+174#5785#5611
10K → 15K23339+194#5611#5417
15K → 20K13872+66#5417#5351
20K → Half2019+1#5351#5350
Half → 25K13453+81#5350#5269
25K → 30K18475+109#5269#5160
30K → 20M15212+140#5160#5020
20M → 21M11621+95#5020#4925
21M → 35K7210+62#4925#4863
35K → 23M12221+101#4863#4762
23M → 24M8416+68#4762#4694
24M → 40K9111+80#4694#4614
40K → 25.2M383+35#4614#4579
25.2M → Finish1321+131#4579#4448
TOTALS1818481+1337
📊

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