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BOSTON MARATHON 2023

Zen Kumekawa

Bib: 17793•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 36%
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
7:53/mi
24:31
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
49:02
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:13:55
↑ 67↓ 78
20K· 12.43 mi
8:05/mi
1:39:01
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:44:19
↑ 19↓ 370.5%
25K· 15.53 mi
8:12/mi
2:04:11
↑ 66↓ 880.2%
30K· 18.64 mi
8:56/mi
2:31:57
↑ 181↓ 1480.2%
20M
9:16/mi
2:44:33
↑ 64↓ 500.2%
21M
10:15/mi
2:54:48
↑ 106↓ 241.6%
35K· 21.75 mi
8:37/mi
3:01:15
↑ 17↓ 861.7%
23M
9:08/mi
3:12:41
↑ 23↓ 630.6%
24M
9:19/mi
3:22:00
↓ 821.3%
40K· 24.85 mi
9:20/mi
3:29:59
↓ 200.3%
25.2M
10:23/mi
3:33:34
↑ 13↓ 160.2%
Finish· 26.22 mi
9:23/mi
3:43:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:19
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:58:49
Pace9:04 /mi
📊Positive Split: 13.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5324:317:5324:31
7:53
-
10K
6.21 mi11:39:2449:027:5324:31
7:53
0:00
15K
9.32 mi12:04:171:13:557:5624:53
8:01
+0:08
20K
12.43 mi12:29:231:39:017:5825:06
8:05
+0:04
Half
13.11 mi12:34:411:44:197:575:18
7:46
-0:19
25K
15.53 mi12:54:332:04:118:0019:52
8:12
+0:26
30K
18.64 mi13:22:192:31:578:0927:46
8:56
+0:44
20M
20.00 mi13:34:552:44:338:1412:36
9:16
+0:20
21M
21.00 mi13:45:102:54:488:1910:15
10:15
+0:59
35K
21.75 mi13:51:373:01:158:206:27
8:37
-1:38
23M
23.00 mi14:03:033:12:418:2311:26
9:08
+0:31
24M
24.00 mi14:12:223:22:008:259:19
9:19
+0:11
40K
24.85 mi14:20:213:29:598:277:59
9:20
+0:01
25.2M
25.20 mi14:23:563:33:348:283:35
10:23
+1:03
Finish
26.22 mi14:33:303:43:088:319:34
9:23
-1:00

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

7:46 /mi

Average Pace

8:31 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:11

56% of race

Time at Steady Pace

1:15:33

34% of race

Time at Slower Pace

23:24

10% of race

Average Pace: 8:31 /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 mi11:14:5324:317:5324:31
7:53
#13152
10K
6.21 mi11:39:2449:027:5324:31
7:53
#13514
15K
9.32 mi12:04:171:13:557:5624:53
8:01
#13819
20K
12.43 mi12:29:231:39:017:5825:06
8:05
#13841
Half
13.11 mi12:34:411:44:197:575:18
7:46
#13765
25K
15.53 mi12:54:332:04:118:0019:52
8:12
#13821
30K
18.64 mi13:22:192:31:578:0927:46
8:56
#14458
20M
20.00 mi13:34:552:44:338:1412:36
9:16
#14756
21M
21.00 mi13:45:102:54:488:1910:15
10:15
#15050
35K
21.75 mi13:51:373:01:158:206:27
8:37
#15073
23M
23.00 mi14:03:033:12:418:2311:26
9:08
#15138
24M
24.00 mi14:12:223:22:008:259:19
9:19
#15331
40K
24.85 mi14:20:213:29:598:277:59
9:20
#15454
25.2M
25.20 mi14:23:563:33:348:283:35
10:23
#15520
Finish
26.22 mi14:33:303:43:088:319:34
9:23
#15707
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi131529610961014452(Top 54%)10088(Top 66%)10088(Top 909%)
10K6.21 mi3.10 mi13514-3629751-1419751-14113902(Top 52%)9905(Top 65%)9905(Top 892%)
15K9.32 mi3.11 mi13819-3059848-979848-9714452(Top 54%)10088(Top 66%)10088(Top 909%)
20K12.43 mi3.11 mi13841-229838+109838+1014084(Top 53%)9916(Top 65%)9916(Top 893%)
Half13.11 mi0.68 mi13765+769809+299809+2912434(Top 47%)9270(Top 61%)9270(Top 835%)
25K15.53 mi2.42 mi13821-569802+79802+714174(Top 53%)9837(Top 65%)9837(Top 886%)
30K18.64 mi3.11 mi14458-63710015-21310015-21316845(Top 63%)10846(Top 71%)10846(Top 977%)
20M20.00 mi1.36 mi14756-29810127-11210127-11217872(Top 67%)11171(Top 74%)11171(Top 1006%)
21M21.00 mi1.00 mi15050-29410201-7410201-7418858(Top 71%)11573(Top 76%)11573(Top 1043%)
35K21.75 mi0.75 mi15073-2310192+910192+915945(Top 60%)10268(Top 68%)10268(Top 925%)
23M23.00 mi1.25 mi15138-6510197-510197-516679(Top 63%)10531(Top 69%)10531(Top 949%)
24M24.00 mi1.00 mi15331-19310252-5510252-5518502(Top 69%)11308(Top 75%)11308(Top 1019%)
40K24.85 mi0.85 mi15454-12310270-1810270-1817658(Top 66%)10862(Top 72%)10862(Top 979%)
25.2M25.20 mi0.35 mi15520-6610294-2410294-2418708(Top 70%)11336(Top 75%)11336(Top 1021%)
Finish26.22 mi1.02 mi15707-18710371-7710371-7719697(Top 74%)11838(Top 78%)11838(Top 1066%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14452

Males

10088

M60-64

10088

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13902

Males

9905

M60-64

9905

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14452

Males

10088

M60-64

10088

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

14084

Males

9916

M60-64

9916

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12434

Males

9270

M60-64

9270

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

14174

Males

9837

M60-64

9837

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16845

Males

10846

M60-64

10846

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17872

Males

11171

M60-64

11171

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18858

Males

11573

M60-64

11573

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

15945

Males

10268

M60-64

10268

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16679

Males

10531

M60-64

10531

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18502

Males

11308

M60-64

11308

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17658

Males

10862

M60-64

10862

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18708

Males

11336

M60-64

11336

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19697

Males

11838

M60-64

11838

Passing Analysis

Category:
Athletes Passed
918
Passed By
3473
Net Change
-2555
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13152
5K → 10K157519-362#13152#13514
10K → 15K93398-305#13514#13819
15K → 20K170192-22#13819#13841
20K → Half826+76#13841#13765
Half → 25K114170-56#13765#13821
25K → 30K48685-637#13821#14458
30K → 20M27325-298#14458#14756
20M → 21M30324-294#14756#15050
21M → 35K4063-23#15050#15073
35K → 23M60125-65#15073#15138
23M → 24M28221-193#15138#15331
24M → 40K28151-123#15331#15454
40K → 25.2M1884-66#15454#15520
25.2M → Finish23210-187#15520#15707
TOTALS9183473-2555
📊

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