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BOSTON MARATHON 2023

Michael Kaiser

Bib: 13927•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
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
7:55/mi
24:36
↑ 97↓ 3451.5%
10K· 6.21 mi
8:11/mi
50:00
↑ 79↓ 1380.4%
15K· 9.32 mi
8:19/mi
1:15:50
↑ 67↓ 78
20K· 12.43 mi
8:32/mi
1:42:22
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:48:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:47/mi
2:09:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:11/mi
2:37:54
↑ 181↓ 1480.2%
20M
9:35/mi
2:50:55
↑ 64↓ 500.2%
21M
10:56/mi
3:01:51
↑ 106↓ 241.6%
35K· 21.75 mi
9:43/mi
3:09:07
↑ 17↓ 861.7%
23M
9:57/mi
3:21:35
↑ 23↓ 630.6%
24M
9:23/mi
3:30:58
↓ 821.3%
40K· 24.85 mi
9:45/mi
3:39:18
↓ 200.3%
25.2M
10:06/mi
3:42:47
↑ 13↓ 160.2%
Finish· 26.22 mi
9:10/mi
3:52:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:04
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time2:04:03
Pace9:28 /mi
📊Positive Split: 14.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1024:367:5524:36
7:55
-
10K
6.21 mi11:18:3450:008:0325:24
8:11
+0:16
15K
9.32 mi11:44:241:15:508:0825:50
8:19
+0:08
20K
12.43 mi12:10:561:42:228:1426:32
8:32
+0:13
Half
13.11 mi12:16:381:48:048:155:42
8:21
-0:11
25K
15.53 mi12:37:552:09:218:2021:17
8:47
+0:26
30K
18.64 mi13:06:282:37:548:2828:33
9:11
+0:24
20M
20.00 mi13:19:292:50:558:3313:01
9:35
+0:24
21M
21.00 mi13:30:253:01:518:4010:56
10:56
+1:21
35K
21.75 mi13:37:413:09:078:427:16
9:43
-1:13
23M
23.00 mi13:50:093:21:358:4612:28
9:57
+0:14
24M
24.00 mi13:59:323:30:588:479:23
9:23
-0:34
40K
24.85 mi14:07:523:39:188:498:20
9:45
+0:22
25.2M
25.20 mi14:11:213:42:478:503:29
10:06
+0:21
Finish
26.22 mi14:20:413:52:078:529:20
9:10
-0:56

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

7:55 /mi

Average Pace

8:52 /mi

Slowest Pace

10:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:04

47% of race

Time at Steady Pace

1:21:34

35% of race

Time at Slower Pace

42:29

18% of race

Average Pace: 8:51 /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 mi10:53:1024:367:5524:36
7:55
#13394
10K
6.21 mi11:18:3450:008:0325:24
8:11
#14716
15K
9.32 mi11:44:241:15:508:0825:50
8:19
#15388
20K
12.43 mi12:10:561:42:228:1426:32
8:32
#15828
Half
13.11 mi12:16:381:48:048:155:42
8:21
#15875
25K
15.53 mi12:37:552:09:218:2021:17
8:47
#16233
30K
18.64 mi13:06:282:37:548:2828:33
9:11
#16595
20M
20.00 mi13:19:292:50:558:3313:01
9:35
#16807
21M
21.00 mi13:30:253:01:518:4010:56
10:56
#17149
35K
21.75 mi13:37:413:09:078:427:16
9:43
#17311
23M
23.00 mi13:50:093:21:358:4612:28
9:57
#17538
24M
24.00 mi13:59:323:30:588:479:23
9:23
#17650
40K
24.85 mi14:07:523:39:188:498:20
9:45
#17754
25.2M
25.20 mi14:11:213:42:478:503:29
10:06
#17757
Finish
26.22 mi14:20:413:52:078:529:20
9:10
#17792
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi133949714971416632(Top 62%)10924(Top 72%)10924(Top 768%)
10K6.21 mi3.10 mi14716-132210222-50810222-50816070(Top 60%)10737(Top 71%)10737(Top 755%)
15K9.32 mi3.11 mi15388-67210463-24110463-24116632(Top 62%)10924(Top 72%)10924(Top 768%)
20K12.43 mi3.11 mi15828-44010609-14610609-14617113(Top 64%)11099(Top 73%)11099(Top 781%)
Half13.11 mi0.68 mi15875-4710623-1410623-1416815(Top 63%)11016(Top 73%)11016(Top 775%)
25K15.53 mi2.42 mi16233-35810738-11510738-11517813(Top 67%)11326(Top 75%)11326(Top 796%)
30K18.64 mi3.11 mi16595-36210832-9410832-9418106(Top 68%)11374(Top 75%)11374(Top 800%)
20M20.00 mi1.36 mi16807-21210920-8810920-8819135(Top 72%)11742(Top 77%)11742(Top 826%)
21M21.00 mi1.00 mi17149-34211051-13111051-13120661(Top 78%)12365(Top 81%)12365(Top 870%)
35K21.75 mi0.75 mi17311-16211100-4911100-4920492(Top 77%)12248(Top 81%)12248(Top 861%)
23M23.00 mi1.25 mi17538-22711172-7211172-7219846(Top 75%)11946(Top 79%)11946(Top 840%)
24M24.00 mi1.00 mi17650-11211204-3211204-3218762(Top 70%)11431(Top 75%)11431(Top 804%)
40K24.85 mi0.85 mi17754-10411247-4311247-4319167(Top 72%)11564(Top 76%)11564(Top 813%)
25.2M25.20 mi0.35 mi17757-311241+611241+617733(Top 67%)10892(Top 72%)10892(Top 766%)
Finish26.22 mi1.02 mi17792-3511247-611247-618717(Top 70%)11407(Top 75%)11407(Top 802%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16632

Males

10924

M55-59

10924

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

16070

Males

10737

M55-59

10737

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16632

Males

10924

M55-59

10924

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

17113

Males

11099

M55-59

11099

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16815

Males

11016

M55-59

11016

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17813

Males

11326

M55-59

11326

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

18106

Males

11374

M55-59

11374

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

19135

Males

11742

M55-59

11742

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

20661

Males

12365

M55-59

12365

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20492

Males

12248

M55-59

12248

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19846

Males

11946

M55-59

11946

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18762

Males

11431

M55-59

11431

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19167

Males

11564

M55-59

11564

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17733

Males

10892

M55-59

10892

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

18717

Males

11407

M55-59

11407

Passing Analysis

Category:
Athletes Passed
514
Passed By
4912
Net Change
-4398
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13394
5K → 10K221344-1322#13394#14716
10K → 15K37709-672#14716#15388
15K → 20K70510-440#15388#15828
20K → Half1966-47#15828#15875
Half → 25K62420-358#15875#16233
25K → 30K87449-362#16233#16595
30K → 20M34246-212#16595#16807
20M → 21M18360-342#16807#17149
21M → 35K17179-162#17149#17311
35K → 23M38265-227#17311#17538
23M → 24M30142-112#17538#17650
24M → 40K28132-104#17650#17754
40K → 25.2M1417-3#17754#17757
25.2M → Finish3873-35#17757#17792
TOTALS5144912-4398
📊

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