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BOSTON MARATHON 2024

Akira Kasai

Bib: 20556•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Division (M60-64)
#0 / 1173
Top 42%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
8:36/mi
26:42
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
53:08
↑ 79↓ 1380.4%
15K· 9.32 mi
8:35/mi
1:19:47
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:47:36
↑ 106↓ 860.1%
Half· 13.11 mi
8:49/mi
1:53:37
↑ 19↓ 370.5%
25K· 15.53 mi
9:03/mi
2:15:34
↑ 66↓ 880.2%
30K· 18.64 mi
9:36/mi
2:45:23
↑ 181↓ 1480.2%
20M
9:21/mi
2:58:05
↑ 64↓ 500.2%
21M
10:05/mi
3:08:10
↑ 106↓ 241.6%
35K· 21.75 mi
8:49/mi
3:14:46
↑ 17↓ 861.7%
23M
9:22/mi
3:26:30
↑ 23↓ 630.6%
24M
9:12/mi
3:35:42
↓ 821.3%
40K· 24.85 mi
9:26/mi
3:43:46
↓ 200.3%
25.2M
10:26/mi
3:47:22
↑ 13↓ 160.2%
Finish· 26.22 mi
9:29/mi
3:57:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:37
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time2:03:25
Pace9:25 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:5226:428:3626:42
8:36
-
10K
6.21 mi11:48:1853:088:3326:26
8:30
-0:06
15K
9.32 mi12:14:571:19:478:3426:39
8:35
+0:05
20K
12.43 mi12:42:461:47:368:3927:49
8:57
+0:22
Half
13.11 mi12:48:471:53:378:406:01
8:49
-0:08
25K
15.53 mi13:10:442:15:348:4421:57
9:03
+0:14
30K
18.64 mi13:40:332:45:238:5229:49
9:36
+0:33
20M
20.00 mi13:53:152:58:058:5412:42
9:21
-0:15
21M
21.00 mi14:03:203:08:108:5810:05
10:05
+0:44
35K
21.75 mi14:09:563:14:468:576:36
8:49
-1:16
23M
23.00 mi14:21:403:26:308:5911:44
9:22
+0:33
24M
24.00 mi14:30:523:35:428:599:12
9:12
-0:10
40K
24.85 mi14:38:563:43:469:008:04
9:26
+0:14
25.2M
25.20 mi14:42:323:47:229:013:36
10:26
+1:00
Finish
26.22 mi14:52:123:57:029:039:40
9:29
-0:57

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

8:30 /mi

Average Pace

9:03 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:24

39% of race

Time at Steady Pace

1:31:28

39% of race

Time at Slower Pace

53:10

22% of race

Average Pace: 9:02 /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 mi11:21:5226:428:3626:42
8:36
#18274
10K
6.21 mi11:48:1853:088:3326:26
8:30
#17804
15K
9.32 mi12:14:571:19:478:3426:39
8:35
#17460
20K
12.43 mi12:42:461:47:368:3927:49
8:57
#17264
Half
13.11 mi12:48:471:53:378:406:01
8:49
#17251
25K
15.53 mi13:10:442:15:348:4421:57
9:03
#16974
30K
18.64 mi13:40:332:45:238:5229:49
9:36
#16741
20M
20.00 mi13:53:152:58:058:5412:42
9:21
#16521
21M
21.00 mi14:03:203:08:108:5810:05
10:05
#16353
35K
21.75 mi14:09:563:14:468:576:36
8:49
#16206
23M
23.00 mi14:21:403:26:308:5911:44
9:22
#16003
24M
24.00 mi14:30:523:35:428:599:12
9:12
#15874
40K
24.85 mi14:38:563:43:469:008:04
9:26
#15714
25.2M
25.20 mi14:42:323:47:229:013:36
10:26
#15655
Finish
26.22 mi14:52:123:57:029:039:40
9:29
#15677
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18274113111131116819(Top 66%)10743(Top 74%)10743(Top 916%)
10K6.21 mi3.10 mi17804+47011146+16511146+16517314(Top 68%)10958(Top 75%)10958(Top 934%)
15K9.32 mi3.11 mi17460+34411012+13411012+13416819(Top 66%)10743(Top 74%)10743(Top 916%)
20K12.43 mi3.11 mi17264+19610896+11610896+11617135(Top 67%)10862(Top 75%)10862(Top 926%)
Half13.11 mi0.68 mi17251+1310878+1810878+1817390(Top 68%)10894(Top 75%)10894(Top 929%)
25K15.53 mi2.42 mi16974+27710752+12610752+12615736(Top 62%)10129(Top 69%)10129(Top 864%)
30K18.64 mi3.11 mi16741+23310594+15810594+15815824(Top 62%)9924(Top 68%)9924(Top 846%)
20M20.00 mi1.36 mi16521+22010461+13310461+13313832(Top 54%)8782(Top 60%)8782(Top 749%)
21M21.00 mi1.00 mi16353+16810367+9410367+9413312(Top 52%)8336(Top 57%)8336(Top 711%)
35K21.75 mi0.75 mi16206+14710274+9310274+9312444(Top 49%)7915(Top 54%)7915(Top 675%)
23M23.00 mi1.25 mi16003+20310156+11810156+11812925(Top 51%)8035(Top 55%)8035(Top 685%)
24M24.00 mi1.00 mi15874+12910067+8910067+8913101(Top 51%)8099(Top 56%)8099(Top 690%)
40K24.85 mi0.85 mi15714+1609961+1069961+10612841(Top 50%)7855(Top 54%)7855(Top 670%)
25.2M25.20 mi0.35 mi15655+599922+399922+3912598(Top 49%)7675(Top 53%)7675(Top 654%)
Finish26.22 mi1.02 mi15677-229914+89914+816452(Top 64%)9680(Top 66%)9680(Top 825%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

16819

Males

10743

M60-64

10743

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

17314

Males

10958

M60-64

10958

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

16819

Males

10743

M60-64

10743

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17135

Males

10862

M60-64

10862

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

17390

Males

10894

M60-64

10894

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

15736

Males

10129

M60-64

10129

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

15824

Males

9924

M60-64

9924

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

13832

Males

8782

M60-64

8782

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13312

Males

8336

M60-64

8336

21M→35K

21.0 - 21.8 mi

Top 49%
×7story building
+17ft-86ft

Overall

12444

Males

7915

M60-64

7915

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

12925

Males

8035

M60-64

8035

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13101

Males

8099

M60-64

8099

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

12841

Males

7855

M60-64

7855

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

12598

Males

7675

M60-64

7675

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

16452

Males

9680

M60-64

9680

Passing Analysis

Category:
Athletes Passed
3345
Passed By
748
Net Change
+2597
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18274
5K → 10K55989+470#18274#17804
10K → 15K42177+344#17804#17460
15K → 20K350154+196#17460#17264
20K → Half4835+13#17264#17251
Half → 25K33861+277#17251#16974
25K → 30K372139+233#16974#16741
30K → 20M24020+220#16741#16521
20M → 21M19729+168#16521#16353
21M → 35K1536+147#16353#16206
35K → 23M22017+203#16206#16003
23M → 24M14819+129#16003#15874
24M → 40K17010+160#15874#15714
40K → 25.2M678+59#15714#15655
25.2M → Finish6284-22#15655#15677
TOTALS3345748+2597
📊

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