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BOSTON MARATHON 2023

Masami Sasao

Bib: 29504•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
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
33:41
Rank: #25438
Start → 5K
33:41 | 10:50/mi
10K· 6.21 mi
1:09:59
Rank: #25877 (-439)
5K → 10K
36:18 | 11:41/mi
15K· 9.32 mi
1:45:23
Rank: #25808 (+69)
10K → 15K
35:24 | 11:24/mi
20K· 12.43 mi
2:23:18
Rank: #25822 (-14)
15K → 20K
37:55 | 12:12/mi
Half· 13.11 mi
2:30:50
Rank: #25788 (+34)
20K → Half
7:32 | 11:02/mi
25K· 15.53 mi
2:59:14
Rank: #25637 (+151)
Half → 25K
28:24 | 11:43/mi
30K· 18.64 mi
3:38:12
Rank: #25538 (+99)
25K → 30K
38:58 | 12:33/mi
20M
3:54:40
Rank: #25467 (+71)
30K → 20M
16:28 | 12:07/mi
21M
4:09:27
Rank: #25482 (-15)
20M → 21M
14:47 | 14:47/mi
35K· 21.75 mi
4:17:48
Rank: #25439 (+43)
21M → 35K
8:21 | 11:10/mi
23M
4:31:57
Rank: #25353 (+86)
35K → 23M
14:09 | 11:18/mi
24M
4:42:38
Rank: #25258 (+95)
23M → 24M
10:41 | 10:41/mi
40K· 24.85 mi
4:52:11
Rank: #25193 (+65)
24M → 40K
9:33 | 11:10/mi
25.2M
4:56:38
Rank: #25185 (+8)
40K → 25.2M
4:27 | 12:54/mi
Finish· 26.22 mi
5:08:27
Rank: #25185
25.2M → Finish
11:49 | 11:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:30:50
Pace11:30 /mi
2nd Half
Distance13.11 mi
Time2:37:37
Pace12:01 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:0233:4110:5033:41
10:50
-
10K
6.21 mi12:28:201:09:5911:1636:18
11:41
+0:51
15K
9.32 mi13:03:441:45:2311:1835:24
11:24
-0:17
20K
12.43 mi13:41:392:23:1811:3237:55
12:12
+0:48
Half
13.11 mi13:49:112:30:5011:307:32
11:02
-1:10
25K
15.53 mi14:17:352:59:1411:3228:24
11:43
+0:41
30K
18.64 mi14:56:333:38:1211:4238:58
12:33
+0:50
20M
20.00 mi15:13:013:54:4011:4416:28
12:07
-0:26
21M
21.00 mi15:27:484:09:2711:5314:47
14:47
+2:40
35K
21.75 mi15:36:094:17:4811:518:21
11:10
-3:37
23M
23.00 mi15:50:184:31:5711:4914:09
11:18
+0:08
24M
24.00 mi16:00:594:42:3811:4710:41
10:41
-0:37
40K
24.85 mi16:10:324:52:1111:459:33
11:10
+0:29
25.2M
25.20 mi16:14:594:56:3811:464:27
12:54
+1:44
Finish
26.22 mi16:26:485:08:2711:4611:49
11:36
-1:18

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

10:41 /mi

Average Pace

11:46 /mi

Slowest Pace

14:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

51:54

17% of race

Time at Steady Pace

2:23:58

47% of race

Time at Slower Pace

1:52:35

36% of race

Average Pace: 11:46 /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 mi11:52:0233:4110:5033:41
10:50
#25438
10K
6.21 mi12:28:201:09:5911:1636:18
11:41
#25877
15K
9.32 mi13:03:441:45:2311:1835:24
11:24
#25808
20K
12.43 mi13:41:392:23:1811:3237:55
12:12
#25822
Half
13.11 mi13:49:112:30:5011:307:32
11:02
#25788
25K
15.53 mi14:17:352:59:1411:3228:24
11:43
#25637
30K
18.64 mi14:56:333:38:1211:4238:58
12:33
#25538
20M
20.00 mi15:13:013:54:4011:4416:28
12:07
#25467
21M
21.00 mi15:27:484:09:2711:5314:47
14:47
#25482
35K
21.75 mi15:36:094:17:4811:518:21
11:10
#25439
23M
23.00 mi15:50:184:31:5711:4914:09
11:18
#25353
24M
24.00 mi16:00:594:42:3811:4710:41
10:41
#25258
40K
24.85 mi16:10:324:52:1111:459:33
11:10
#25193
25.2M
25.20 mi16:14:594:56:3811:464:27
12:54
#25185
Finish
26.22 mi16:26:485:08:2711:4611:49
11:36
#25185
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi25438147261472625603(Top 96%)14771(Top 97%)14771(Top 1331%)
10K6.21 mi3.10 mi25877-43914887-16114887-16126094(Top 98%)14969(Top 99%)14969(Top 1349%)
15K9.32 mi3.11 mi25808+6914869+1814869+1825603(Top 96%)14771(Top 97%)14771(Top 1331%)
20K12.43 mi3.11 mi25822-1414863+614863+625769(Top 97%)14818(Top 98%)14818(Top 1335%)
Half13.11 mi0.68 mi25788+3414847+1614847+1624983(Top 94%)14473(Top 95%)14473(Top 1304%)
25K15.53 mi2.42 mi25637+15114779+6814779+6824899(Top 94%)14419(Top 95%)14419(Top 1299%)
30K18.64 mi3.11 mi25538+9914721+5814721+5825038(Top 94%)14431(Top 95%)14431(Top 1300%)
20M20.00 mi1.36 mi25467+7114681+4014681+4024341(Top 91%)14065(Top 93%)14065(Top 1267%)
21M21.00 mi1.00 mi25482-1514684-314684-325601(Top 96%)14669(Top 97%)14669(Top 1322%)
35K21.75 mi0.75 mi25439+4314662+2214662+2223583(Top 89%)13639(Top 90%)13639(Top 1229%)
23M23.00 mi1.25 mi25353+8614620+4214620+4222893(Top 86%)13342(Top 88%)13342(Top 1202%)
24M24.00 mi1.00 mi25258+9514569+5114569+5122418(Top 84%)13079(Top 86%)13079(Top 1178%)
40K24.85 mi0.85 mi25193+6514536+3314536+3322684(Top 85%)13172(Top 87%)13172(Top 1187%)
25.2M25.20 mi0.35 mi25185+814531+514531+523848(Top 90%)13716(Top 90%)13716(Top 1236%)
Finish26.22 mi1.02 mi2518514529+214529+224802(Top 93%)14218(Top 94%)14218(Top 1281%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21stories
+97ft-345ft

Overall

25603

Males

14771

M60-64

14771

5K→10K

3.1 - 6.2 mi

Top 98%
×5stories
+79ft-138ft

Overall

26094

Males

14969

M60-64

14969

10K→15K

6.2 - 9.3 mi

Top 96%
×3stories
+67ft-78ft

Overall

25603

Males

14771

M60-64

14771

15K→20K

9.3 - 12.4 mi

Top 97%
×5stories
+106ft-86ft

Overall

25769

Males

14818

M60-64

14818

20K→Half

12.4 - 13.1 mi

Top 94%
×2stories
+19ft-37ft

Overall

24983

Males

14473

M60-64

14473

Half→25K

13.1 - 15.5 mi

Top 94%
×4stories
+66ft-88ft

Overall

24899

Males

14419

M60-64

14419

25K→30K

15.5 - 18.6 mi

Top 94%
×9stories
+181ft-148ft

Overall

25038

Males

14431

M60-64

14431

30K→20M

18.6 - 20.0 mi

Top 91%
×5stories
+64ft-50ft

Overall

24341

Males

14065

M60-64

14065

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

25601

Males

14669

M60-64

14669

21M→35K

21.0 - 21.8 mi

Top 89%
×7stories
+17ft-86ft

Overall

23583

Males

13639

M60-64

13639

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

22893

Males

13342

M60-64

13342

23M→24M

23.0 - 24.0 mi

Top 84%
×6stories
+12ft-82ft

Overall

22418

Males

13079

M60-64

13079

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22684

Males

13172

M60-64

13172

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

23848

Males

13716

M60-64

13716

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2stories
+22ft-21ft

Overall

24802

Males

14218

M60-64

14218

Passing Analysis

Category:
Athletes Passed
933
Passed By
680
Net Change
+253
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25438
5K → 10K22461-439#25438#25877
10K → 15K11445+69#25877#25808
15K → 20K6579-14#25808#25822
20K → Half373+34#25822#25788
Half → 25K1554+151#25788#25637
25K → 30K12526+99#25637#25538
30K → 20M743+71#25538#25467
20M → 21M1833-15#25467#25482
21M → 35K452+43#25482#25439
35K → 23M882+86#25439#25353
23M → 24M950+95#25353#25258
24M → 40K650+65#25258#25193
40K → 25.2M102+8#25193#25185
25.2M → Finish20200#25185#25185
TOTALS933680+253
📊

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