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BOSTON MARATHON 2025

Zen Kumekawa

Bib: 18658•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:20
Rank: #17762
Start → 5K
25:20 | 8:09/mi
10K· 6.21 mi
50:42
Rank: #17682 (+80)
5K → 10K
25:22 | 8:10/mi
15K· 9.32 mi
1:16:51
Rank: #18065 (-383)
10K → 15K
26:09 | 8:25/mi
20K· 12.43 mi
1:44:31
Rank: #18719 (-654)
15K → 20K
27:40 | 8:54/mi
Half· 13.11 mi
1:50:22
Rank: #18758 (-39)
20K → Half
5:51 | 8:34/mi
25K· 15.53 mi
2:11:40
Rank: #18764 (-6)
Half → 25K
21:18 | 8:47/mi
30K· 18.64 mi
2:40:50
Rank: #18904 (-140)
25K → 30K
29:10 | 9:23/mi
20M
2:53:36
Rank: #18902 (+2)
30K → 20M
12:46 | 9:24/mi
21M
3:04:35
Rank: #19118 (-216)
20M → 21M
10:59 | 10:59/mi
35K· 21.75 mi
3:11:12
Rank: #19059 (+59)
21M → 35K
6:37 | 8:51/mi
23M
3:23:08
Rank: #19056 (+3)
35K → 23M
11:56 | 9:32/mi
24M
3:32:25
Rank: #19048 (+8)
23M → 24M
9:17 | 9:17/mi
40K· 24.85 mi
3:40:15
Rank: #18944 (+104)
24M → 40K
7:50 | 9:10/mi
25.2M
3:43:54
Rank: #18952 (-8)
40K → 25.2M
3:39 | 10:35/mi
Finish· 26.22 mi
3:53:17
Rank: #18989 (-37)
25.2M → Finish
9:23 | 9:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:22
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:02:55
Pace9:23 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0625:208:0925:20
8:09
-
10K
6.21 mi11:41:2850:428:1025:22
8:10
+0:01
15K
9.32 mi12:07:371:16:518:1526:09
8:25
+0:15
20K
12.43 mi12:35:171:44:318:2527:40
8:54
+0:29
Half
13.11 mi12:41:081:50:228:255:51
8:34
-0:20
25K
15.53 mi13:02:262:11:408:2921:18
8:47
+0:13
30K
18.64 mi13:31:362:40:508:3829:10
9:23
+0:36
20M
20.00 mi13:44:222:53:368:4112:46
9:24
+0:01
21M
21.00 mi13:55:213:04:358:4710:59
10:59
+1:35
35K
21.75 mi14:01:583:11:128:476:37
8:51
-2:08
23M
23.00 mi14:13:543:23:088:5011:56
9:32
+0:41
24M
24.00 mi14:23:113:32:258:519:17
9:17
-0:15
40K
24.85 mi14:31:013:40:158:527:50
9:10
-0:07
25.2M
25.20 mi14:34:403:43:548:533:39
10:35
+1:25
Finish
26.22 mi14:44:033:53:178:549:23
9:12
-1:23

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

8:09 /mi

Average Pace

8:54 /mi

Slowest Pace

10:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:42

35% of race

Time at Steady Pace

2:15:57

58% of race

Time at Slower Pace

14:38

6% of race

Average Pace: 8:54 /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 mi11:16:0625:208:0925:20
8:09
#17762
10K
6.21 mi11:41:2850:428:1025:22
8:10
#17682
15K
9.32 mi12:07:371:16:518:1526:09
8:25
#18065
20K
12.43 mi12:35:171:44:318:2527:40
8:54
#18719
Half
13.11 mi12:41:081:50:228:255:51
8:34
#18758
25K
15.53 mi13:02:262:11:408:2921:18
8:47
#18764
30K
18.64 mi13:31:362:40:508:3829:10
9:23
#18904
20M
20.00 mi13:44:222:53:368:4112:46
9:24
#18902
21M
21.00 mi13:55:213:04:358:4710:59
10:59
#19118
35K
21.75 mi14:01:583:11:128:476:37
8:51
#19059
23M
23.00 mi14:13:543:23:088:5011:56
9:32
#19056
24M
24.00 mi14:23:113:32:258:519:17
9:17
#19048
40K
24.85 mi14:31:013:40:158:527:50
9:10
#18944
25.2M
25.20 mi14:34:403:43:548:533:39
10:35
#18952
Finish
26.22 mi14:44:033:53:178:549:23
9:12
#18989
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17762115141151418801(Top 66%)11963(Top 74%)11963(Top 950%)
10K6.21 mi3.10 mi17682+8011490+2411490+2417650(Top 62%)11513(Top 71%)11513(Top 914%)
15K9.32 mi3.11 mi18065-38311643-15311643-15318801(Top 66%)11963(Top 74%)11963(Top 950%)
20K12.43 mi3.11 mi18719-65411921-27811921-27820489(Top 72%)12666(Top 79%)12666(Top 1006%)
Half13.11 mi0.68 mi18758-3911941-2011941-2019636(Top 69%)12310(Top 76%)12310(Top 978%)
25K15.53 mi2.42 mi18764-611929+1211929+1218835(Top 66%)11890(Top 74%)11890(Top 944%)
30K18.64 mi3.11 mi18904-14011959-3011959-3019481(Top 69%)12048(Top 75%)12048(Top 957%)
20M20.00 mi1.36 mi18902+211930+2911930+2918714(Top 66%)11552(Top 72%)11552(Top 918%)
21M21.00 mi1.00 mi19118-21612002-7212002-7221329(Top 75%)12658(Top 79%)12658(Top 1005%)
35K21.75 mi0.75 mi19059+5911952+5011952+5017468(Top 61%)10818(Top 67%)10818(Top 859%)
23M23.00 mi1.25 mi19056+311923+2911923+2918826(Top 66%)11368(Top 71%)11368(Top 903%)
24M24.00 mi1.00 mi19048+811901+2211901+2218729(Top 66%)11285(Top 70%)11285(Top 896%)
40K24.85 mi0.85 mi18944+10411821+8011821+8017168(Top 60%)10458(Top 65%)10458(Top 831%)
25.2M25.20 mi0.35 mi18952-811815+611815+619278(Top 68%)11437(Top 71%)11437(Top 908%)
Finish26.22 mi1.02 mi18989-3711813+211813+219969(Top 70%)11790(Top 73%)11790(Top 936%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18801

Males

11963

M60-64

11963

5K→10K

3.1 - 6.2 mi

Top 62%
×5stories
+79ft-138ft

Overall

17650

Males

11513

M60-64

11513

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18801

Males

11963

M60-64

11963

15K→20K

9.3 - 12.4 mi

Top 72%
×5stories
+106ft-86ft

Overall

20489

Males

12666

M60-64

12666

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

19636

Males

12310

M60-64

12310

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

18835

Males

11890

M60-64

11890

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19481

Males

12048

M60-64

12048

30K→20M

18.6 - 20.0 mi

Top 66%
×5stories
+64ft-50ft

Overall

18714

Males

11552

M60-64

11552

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21329

Males

12658

M60-64

12658

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17468

Males

10818

M60-64

10818

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

18826

Males

11368

M60-64

11368

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18729

Males

11285

M60-64

11285

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17168

Males

10458

M60-64

10458

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19278

Males

11437

M60-64

11437

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19969

Males

11790

M60-64

11790

Passing Analysis

Category:
Athletes Passed
1451
Passed By
2678
Net Change
-1227
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17762
5K → 10K324244+80#17762#17682
10K → 15K87470-383#17682#18065
15K → 20K67721-654#18065#18719
20K → Half2867-39#18719#18758
Half → 25K161167-6#18758#18764
25K → 30K196336-140#18764#18904
30K → 20M111109+2#18904#18902
20M → 21M42258-216#18902#19118
21M → 35K8425+59#19118#19059
35K → 23M9491+3#19059#19056
23M → 24M6860+8#19056#19048
24M → 40K12117+104#19048#18944
40K → 25.2M2735-8#18944#18952
25.2M → Finish4178-37#18952#18989
TOTALS14512678-1227
📊

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