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BOSTON MARATHON 2023

Tatsuya Arai

Bib: 3220•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
35:03
Rank: #26007
Start → 5K
35:03 | 11:17/mi
10K· 6.21 mi
1:09:44
Rank: #25840 (+167)
5K → 10K
34:41 | 11:10/mi
15K· 9.32 mi
1:48:28
Rank: #26073 (-233)
10K → 15K
38:44 | 12:28/mi
20K· 12.43 mi
2:54:44
Rank: #26612 (-539)
15K → 20K
1:06:16 | 21:20/mi
Half· 13.11 mi
3:05:18
Rank: #26613 (-1)
20K → Half
10:34 | 15:29/mi
25K· 15.53 mi
3:43:07
Rank: #26615 (-2)
Half → 25K
37:49 | 15:36/mi
30K· 18.64 mi
4:35:46
Rank: #26616 (-1)
25K → 30K
52:39 | 16:57/mi
20M
4:56:03
Rank: #26615 (+1)
30K → 20M
20:17 | 14:56/mi
21M
5:13:02
Rank: #26615
20M → 21M
16:59 | 16:59/mi
35K· 21.75 mi
5:24:11
Rank: #26615
21M → 35K
11:09 | 14:54/mi
23M
5:44:29
Rank: #26616 (-1)
35K → 23M
20:18 | 16:13/mi
24M
6:00:54
Rank: #26616
23M → 24M
16:25 | 16:25/mi
40K· 24.85 mi
6:17:29
Rank: #26616
24M → 40K
16:35 | 19:24/mi
25.2M
6:24:25
Rank: #26618 (-2)
40K → 25.2M
6:56 | 20:06/mi
Finish· 26.22 mi
6:43:08
Rank: #26618
25.2M → Finish
18:43 | 18:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time3:05:18
Pace14:08 /mi
2nd Half
Distance13.11 mi
Time3:37:50
Pace16:37 /mi
📊Positive Split: 17.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:36:5335:0311:1735:03
11:17
-
10K
6.21 mi11:11:341:09:4411:1334:41
11:10
-0:07
15K
9.32 mi11:50:181:48:2811:3838:44
12:28
+1:18
20K
12.43 mi12:56:342:54:4414:041:06:16
21:20
+8:52
Half
13.11 mi13:07:083:05:1814:0810:34
15:29
-5:51
25K
15.53 mi13:44:573:43:0714:2237:49
15:36
+0:07
30K
18.64 mi14:37:364:35:4614:4852:39
16:57
+1:21
20M
20.00 mi14:57:534:56:0314:4820:17
14:56
-2:01
21M
21.00 mi15:14:525:13:0214:5416:59
16:59
+2:03
35K
21.75 mi15:26:015:24:1114:5411:09
14:54
-2:05
23M
23.00 mi15:46:195:44:2914:5920:18
16:13
+1:19
24M
24.00 mi16:02:446:00:5415:0216:25
16:25
+0:12
40K
24.85 mi16:19:196:17:2915:1116:35
19:24
+2:59
25.2M
25.20 mi16:26:156:24:2515:156:56
20:06
+0:42
Finish
26.22 mi16:44:586:43:0815:2318:43
18:22
-1:44

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

11:10 /mi

Average Pace

15:23 /mi

Slowest Pace

21:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:28

27% of race

Time at Steady Pace

3:06:10

46% of race

Time at Slower Pace

1:48:30

27% of race

Average Pace: 15:23 /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 mi10:36:5335:0311:1735:03
11:17
#26007
10K
6.21 mi11:11:341:09:4411:1334:41
11:10
#25840
15K
9.32 mi11:50:181:48:2811:3838:44
12:28
#26073
20K
12.43 mi12:56:342:54:4414:041:06:16
21:20
#26612
Half
13.11 mi13:07:083:05:1814:0810:34
15:29
#26613
25K
15.53 mi13:44:573:43:0714:2237:49
15:36
#26615
30K
18.64 mi14:37:364:35:4614:4852:39
16:57
#26616
20M
20.00 mi14:57:534:56:0314:4820:17
14:56
#26615
21M
21.00 mi15:14:525:13:0214:5416:59
16:59
#26615
35K
21.75 mi15:26:015:24:1114:5411:09
14:54
#26615
23M
23.00 mi15:46:195:44:2914:5920:18
16:13
#26616
24M
24.00 mi16:02:446:00:5415:0216:25
16:25
#26616
40K
24.85 mi16:19:196:17:2915:1116:35
19:24
#26616
25.2M
25.20 mi16:26:156:24:2515:156:56
20:06
#26618
Finish
26.22 mi16:44:586:43:0815:2318:43
18:22
#26618
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi26007149341493426307(Top 99%)15048(Top 99%)15048(Top 671%)
10K6.21 mi3.10 mi25840+16714874+6014874+6025647(Top 96%)14801(Top 98%)14801(Top 660%)
15K9.32 mi3.11 mi26073-23314966-9214966-9226307(Top 99%)15048(Top 99%)15048(Top 671%)
20K12.43 mi3.11 mi26612-53915168-20215168-20226622(Top 100%)15176(Top 100%)15176(Top 677%)
Half13.11 mi0.68 mi26613-115169-115169-126603(Top 100%)15167(Top 100%)15167(Top 677%)
25K15.53 mi2.42 mi26615-215171-215171-226585(Top 100%)15157(Top 100%)15157(Top 676%)
30K18.64 mi3.11 mi26616-115172-115172-126599(Top 100%)15163(Top 100%)15163(Top 677%)
20M20.00 mi1.36 mi26615+1151721517226269(Top 99%)14978(Top 99%)14978(Top 668%)
21M21.00 mi1.00 mi26615151721517226433(Top 99%)15078(Top 99%)15078(Top 673%)
35K21.75 mi0.75 mi26615151721517226395(Top 99%)15047(Top 99%)15047(Top 671%)
23M23.00 mi1.25 mi26616-1151721517226513(Top 100%)15109(Top 100%)15109(Top 674%)
24M24.00 mi1.00 mi26616151721517226551(Top 100%)15131(Top 100%)15131(Top 675%)
40K24.85 mi0.85 mi26616151721517226602(Top 100%)15164(Top 100%)15164(Top 677%)
25.2M25.20 mi0.35 mi26618-215174-215174-226589(Top 100%)15156(Top 100%)15156(Top 676%)
Finish26.22 mi1.02 mi26618151741517426603(Top 100%)15163(Top 100%)15163(Top 677%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

26307

Males

15048

M40-44

15048

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

25647

Males

14801

M40-44

14801

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

26307

Males

15048

M40-44

15048

15K→20K

9.3 - 12.4 mi

Top 100%
×5stories
+106ft-86ft

Overall

26622

Males

15176

M40-44

15176

20K→Half

12.4 - 13.1 mi

Top 100%
×2stories
+19ft-37ft

Overall

26603

Males

15167

M40-44

15167

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

26585

Males

15157

M40-44

15157

25K→30K

15.5 - 18.6 mi

Top 100%
×9stories
+181ft-148ft

Overall

26599

Males

15163

M40-44

15163

30K→20M

18.6 - 20.0 mi

Top 99%
×5stories
+64ft-50ft

Overall

26269

Males

14978

M40-44

14978

20M→21M

20.0 - 21.0 mi

Top 99%
×8stories
+106ft-24ft

Overall

26433

Males

15078

M40-44

15078

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

26395

Males

15047

M40-44

15047

35K→23M

21.8 - 23.0 mi

Top 100%
×5stories
+23ft-63ft

Overall

26513

Males

15109

M40-44

15109

23M→24M

23.0 - 24.0 mi

Top 100%
×6stories
+12ft-82ft

Overall

26551

Males

15131

M40-44

15131

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

26602

Males

15164

M40-44

15164

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

26589

Males

15156

M40-44

15156

25.2M→Finish

25.2 - 26.2 mi

Top 100%
×2stories
+22ft-21ft

Overall

26603

Males

15163

M40-44

15163

Passing Analysis

Category:
Athletes Passed
232
Passed By
843
Net Change
-611
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26007
5K → 10K21548+167#26007#25840
10K → 15K15248-233#25840#26073
15K → 20K0539-539#26073#26612
20K → Half01-1#26612#26613
Half → 25K02-2#26613#26615
25K → 30K01-1#26615#26616
30K → 20M10+1#26616#26615
20M → 21M000#26615#26615
21M → 35K000#26615#26615
35K → 23M01-1#26615#26616
23M → 24M110#26616#26616
24M → 40K000#26616#26616
40K → 25.2M02-2#26616#26618
25.2M → Finish000#26618#26618
TOTALS232843-611
📊

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