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BOSTON MARATHON 2025

Toshio Kanai

Bib: 6523•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Masters (Masters Men)
#0 / 10463
Top 3%
Division (M40-44)
#0 / 2247
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:25
Rank: #4347
Start → 5K
20:25 | 6:34/mi
10K· 6.21 mi
40:37
Rank: #4020 (+327)
5K → 10K
20:12 | 6:30/mi
15K· 9.32 mi
1:00:36
Rank: #3702 (+318)
10K → 15K
19:59 | 6:26/mi
20K· 12.43 mi
1:20:46
Rank: #3497 (+205)
15K → 20K
20:10 | 6:29/mi
Half· 13.11 mi
1:25:09
Rank: #3468 (+29)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:40:44
Rank: #3280 (+188)
Half → 25K
15:35 | 6:26/mi
30K· 18.64 mi
2:00:55
Rank: #2950 (+330)
25K → 30K
20:11 | 6:30/mi
20M
2:09:50
Rank: #2816 (+134)
30K → 20M
8:55 | 6:34/mi
21M
2:16:32
Rank: #2680 (+136)
20M → 21M
6:42 | 6:42/mi
35K· 21.75 mi
2:20:57
Rank: #2531 (+149)
21M → 35K
4:25 | 5:54/mi
23M
2:28:37
Rank: #2317 (+214)
35K → 23M
7:40 | 6:07/mi
24M
2:34:41
Rank: #2184 (+133)
23M → 24M
6:04 | 6:04/mi
40K· 24.85 mi
2:40:01
Rank: #2082 (+102)
24M → 40K
5:20 | 6:14/mi
25.2M
2:42:23
Rank: #2049 (+33)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:48:43
Rank: #2020 (+29)
25.2M → Finish
6:20 | 6:13/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:25:09
Pace6:30 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:23:34
Pace6:22 /mi
📊Negative Split: 1.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:1520:256:3420:25
6:34
-
10K
6.21 mi10:46:2740:376:3220:12
6:30
-0:04
15K
9.32 mi11:06:261:00:366:3019:59
6:26
-0:04
20K
12.43 mi11:26:361:20:466:3020:10
6:29
+0:03
Half
13.11 mi11:30:591:25:096:304:23
6:25
-0:04
25K
15.53 mi11:46:341:40:446:2915:35
6:26
+0:01
30K
18.64 mi12:06:452:00:556:2920:11
6:30
+0:04
20M
20.00 mi12:15:402:09:506:298:55
6:34
+0:04
21M
21.00 mi12:22:222:16:326:306:42
6:42
+0:08
35K
21.75 mi12:26:472:20:576:294:25
5:54
-0:48
23M
23.00 mi12:34:272:28:376:287:40
6:07
+0:13
24M
24.00 mi12:40:312:34:416:276:04
6:04
-0:03
40K
24.85 mi12:45:512:40:016:265:20
6:14
+0:10
25.2M
25.20 mi12:48:132:42:236:272:22
6:52
+0:38
Finish
26.22 mi12:54:332:48:436:266:20
6:13
-0:39

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

5:54 /mi

Average Pace

6:26 /mi

Slowest Pace

6:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:56

53% of race

Time at Steady Pace

1:18:47

47% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:26 /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 mi10:26:1520:256:3420:25
6:34
#4347
10K
6.21 mi10:46:2740:376:3220:12
6:30
#4020
15K
9.32 mi11:06:261:00:366:3019:59
6:26
#3702
20K
12.43 mi11:26:361:20:466:3020:10
6:29
#3497
Half
13.11 mi11:30:591:25:096:304:23
6:25
#3468
25K
15.53 mi11:46:341:40:446:2915:35
6:26
#3280
30K
18.64 mi12:06:452:00:556:2920:11
6:30
#2950
20M
20.00 mi12:15:402:09:506:298:55
6:34
#2816
21M
21.00 mi12:22:222:16:326:306:42
6:42
#2680
35K
21.75 mi12:26:472:20:576:294:25
5:54
#2531
23M
23.00 mi12:34:272:28:376:287:40
6:07
#2317
24M
24.00 mi12:40:312:34:416:276:04
6:04
#2184
40K
24.85 mi12:45:512:40:016:265:20
6:14
#2082
25.2M
25.20 mi12:48:132:42:236:272:22
6:52
#2049
Finish
26.22 mi12:54:332:48:436:266:20
6:13
#2020
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4347408440843123(Top 11%)2972(Top 18%)2972(Top 132%)
10K6.21 mi3.10 mi4020+3273794+2903794+2903711(Top 13%)3500(Top 22%)3500(Top 156%)
15K9.32 mi3.11 mi3702+3183501+2933501+2933123(Top 11%)2972(Top 18%)2972(Top 132%)
20K12.43 mi3.11 mi3497+2053314+1873314+1873064(Top 11%)2910(Top 18%)2910(Top 130%)
Half13.11 mi0.68 mi3468+293285+293285+293133(Top 11%)2974(Top 18%)2974(Top 132%)
25K15.53 mi2.42 mi3280+1883120+1653120+1652485(Top 9%)2363(Top 15%)2363(Top 105%)
30K18.64 mi3.11 mi2950+3302810+3102810+3101957(Top 7%)1860(Top 12%)1860(Top 83%)
20M20.00 mi1.36 mi2816+1342682+1282682+1281851(Top 7%)1751(Top 11%)1751(Top 78%)
21M21.00 mi1.00 mi2680+1362552+1302552+1301203(Top 4%)1137(Top 7%)1137(Top 51%)
35K21.75 mi0.75 mi2531+1492410+1422410+142546(Top 2%)510(Top 3%)510(Top 23%)
23M23.00 mi1.25 mi2317+2142209+2012209+201537(Top 2%)507(Top 3%)507(Top 23%)
24M24.00 mi1.00 mi2184+1332077+1322077+132712(Top 3%)669(Top 4%)669(Top 30%)
40K24.85 mi0.85 mi2082+1021976+1011976+101839(Top 3%)788(Top 5%)788(Top 35%)
25.2M25.20 mi0.35 mi2049+331943+331943+331136(Top 4%)1046(Top 6%)1046(Top 47%)
Finish26.22 mi1.02 mi2020+291915+281915+281565(Top 6%)1454(Top 9%)1454(Top 65%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3123

Males

2972

M40-44

2972

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3711

Males

3500

M40-44

3500

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3123

Males

2972

M40-44

2972

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

3064

Males

2910

M40-44

2910

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3133

Males

2974

M40-44

2974

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2485

Males

2363

M40-44

2363

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1957

Males

1860

M40-44

1860

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1851

Males

1751

M40-44

1751

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1203

Males

1137

M40-44

1137

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

546

Males

510

M40-44

510

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

537

Males

507

M40-44

507

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

712

Males

669

M40-44

669

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

839

Males

788

M40-44

788

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1136

Males

1046

M40-44

1046

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1565

Males

1454

M40-44

1454

Passing Analysis

Category:
Athletes Passed
2447
Passed By
120
Net Change
+2327
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4347
5K → 10K37245+327#4347#4020
10K → 15K3279+318#4020#3702
15K → 20K22217+205#3702#3497
20K → Half334+29#3497#3468
Half → 25K1979+188#3468#3280
25K → 30K3399+330#3280#2950
30K → 20M1362+134#2950#2816
20M → 21M1382+136#2816#2680
21M → 35K1490+149#2680#2531
35K → 23M2140+214#2531#2317
23M → 24M1341+133#2317#2184
24M → 40K1031+102#2184#2082
40K → 25.2M352+33#2082#2049
25.2M → Finish4819+29#2049#2020
TOTALS2447120+2327
📊

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