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BOSTON MARATHON 2023

Yuki Arikawa

Bib: 31847 M JP

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
10:03/mi
31:14
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:48/mi
1:01:42
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:32/mi
1:31:20
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
10:12/mi
2:03:02
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:58/mi
2:09:50
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
10:38/mi
2:35:38
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
11:59/mi
3:12:52
↑ 181↓ 1480.2%
138 ft elev
20M
13:13/mi
3:30:50
↑ 64↓ 500.2%
148 ft elev
21M
14:11/mi
3:45:01
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
13:03/mi
3:54:47
↑ 17↓ 861.7%
156 ft elev
23M
13:38/mi
4:11:51
↑ 23↓ 630.6%
116 ft elev
24M
12:06/mi
4:23:57
↓ 821.3%
34 ft elev
40K· 24.85 mi
13:01/mi
4:35:05
↓ 200.3%
20 ft elev
25.2M
13:23/mi
4:39:42
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:55/mi
4:50:49
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:09:50
Pace9:54 /mi
2nd Half
Distance13.11 mi
Time2:40:59
Pace12:17 /mi
📊Positive Split: 24.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:5731:1410:0331:14
10:03
-
10K
6.21 mi12:23:251:01:429:5630:28
9:48
-0:15
15K
9.32 mi12:53:031:31:209:4829:38
9:32
-0:16
20K
12.43 mi13:24:452:03:029:5431:42
10:12
+0:40
Half
13.11 mi13:31:332:09:509:546:48
9:58
-0:14
25K
15.53 mi13:57:212:35:3810:0125:48
10:38
+0:40
30K
18.64 mi14:34:353:12:5210:2137:14
11:59
+1:21
20M
20.00 mi14:52:333:30:5010:3217:58
13:13
+1:14
21M
21.00 mi15:06:443:45:0110:4314:11
14:11
+0:58
35K
21.75 mi15:16:303:54:4710:489:46
13:03
-1:08
23M
23.00 mi15:33:344:11:5110:5717:04
13:38
+0:35
24M
24.00 mi15:45:404:23:5711:0012:06
12:06
-1:32
40K
24.85 mi15:56:484:35:0511:0411:08
13:01
+0:55
25.2M
25.20 mi16:01:254:39:4211:064:37
13:23
+0:22
Finish
26.22 mi16:12:324:50:4911:0611:07
10:55
-2:28

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

9:32 /mi

Average Pace

11:06 /mi

Slowest Pace

14:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:45

57% of race

Time at Steady Pace

49:20

17% of race

Time at Slower Pace

1:14:44

26% of race

Average Pace: 11:05 /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 mi11:52:5731:1410:0331:14
10:03
#23558
10K
6.21 mi12:23:251:01:429:5630:28
9:48
#23464
15K
9.32 mi12:53:031:31:209:4829:38
9:32
#23150
20K
12.43 mi13:24:452:03:029:5431:42
10:12
#23195
Half
13.11 mi13:31:332:09:509:546:48
9:58
#23195
25K
15.53 mi13:57:212:35:3810:0125:48
10:38
#23244
30K
18.64 mi14:34:353:12:5210:2137:14
11:59
#23518
20M
20.00 mi14:52:333:30:5010:3217:58
13:13
#23742
21M
21.00 mi15:06:443:45:0110:4314:11
14:11
#23886
35K
21.75 mi15:16:303:54:4710:489:46
13:03
#24002
23M
23.00 mi15:33:344:11:5110:5717:04
13:38
#24151
24M
24.00 mi15:45:404:23:5711:0012:06
12:06
#24179
40K
24.85 mi15:56:484:35:0511:0411:08
13:01
#24238
25.2M
25.20 mi16:01:254:39:4211:064:37
13:23
#24241
Finish
26.22 mi16:12:324:50:4911:0611:07
10:55
#24240
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi23558138581385822363(Top 84%)13354(Top 88%)13354(Top 596%)
10K6.21 mi3.10 mi23464+9413838+2013838+2023279(Top 87%)13763(Top 91%)13763(Top 614%)
15K9.32 mi3.11 mi23150+31413699+13913699+13922363(Top 84%)13354(Top 88%)13354(Top 596%)
20K12.43 mi3.11 mi23195-4513719-2013719-2023294(Top 87%)13763(Top 91%)13763(Top 614%)
Half13.11 mi0.68 mi2319513723-413723-423212(Top 87%)13723(Top 90%)13723(Top 612%)
25K15.53 mi2.42 mi23244-4913743-2013743-2023419(Top 88%)13775(Top 91%)13775(Top 615%)
30K18.64 mi3.11 mi23518-27413841-9813841-9824476(Top 92%)14190(Top 94%)14190(Top 633%)
20M20.00 mi1.36 mi23742-22413934-9313934-9325329(Top 95%)14538(Top 96%)14538(Top 649%)
21M21.00 mi1.00 mi23886-14413988-5413988-5425187(Top 95%)14459(Top 95%)14459(Top 645%)
35K21.75 mi0.75 mi24002-11614034-4614034-4625593(Top 96%)14630(Top 96%)14630(Top 653%)
23M23.00 mi1.25 mi24151-14914081-4714081-4725592(Top 96%)14613(Top 96%)14613(Top 652%)
24M24.00 mi1.00 mi24179-2814091-1014091-1024642(Top 93%)14114(Top 93%)14114(Top 630%)
40K24.85 mi0.85 mi24238-5914114-2314114-2324948(Top 94%)14276(Top 94%)14276(Top 637%)
25.2M25.20 mi0.35 mi24241-314111+314111+324401(Top 92%)14000(Top 92%)14000(Top 625%)
Finish26.22 mi1.02 mi24240+114109+214109+223801(Top 89%)13722(Top 90%)13722(Top 612%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

22363

Males

13354

M40-44

13354

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

23279

Males

13763

M40-44

13763

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

22363

Males

13354

M40-44

13354

15K→20K

9.3 - 12.4 mi

Top 87%
×5story building
+106ft-86ft

Overall

23294

Males

13763

M40-44

13763

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

23212

Males

13723

M40-44

13723

Half→25K

13.1 - 15.5 mi

Top 88%
×4story building
+66ft-88ft

Overall

23419

Males

13775

M40-44

13775

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

24476

Males

14190

M40-44

14190

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

25329

Males

14538

M40-44

14538

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

25187

Males

14459

M40-44

14459

21M→35K

21.0 - 21.8 mi

Top 96%
×7story building
+17ft-86ft

Overall

25593

Males

14630

M40-44

14630

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25592

Males

14613

M40-44

14613

23M→24M

23.0 - 24.0 mi

Top 93%
×6story building
+12ft-82ft

Overall

24642

Males

14114

M40-44

14114

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

24948

Males

14276

M40-44

14276

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24401

Males

14000

M40-44

14000

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

23801

Males

13722

M40-44

13722

Passing Analysis

Category:
Athletes Passed
969
Passed By
1651
Net Change
-682
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23558
5K → 10K264170+94#23558#23464
10K → 15K34430+314#23464#23150
15K → 20K106151-45#23150#23195
20K → Half29290#23195#23195
Half → 25K84133-49#23195#23244
25K → 30K35309-274#23244#23518
30K → 20M15239-224#23518#23742
20M → 21M13157-144#23742#23886
21M → 35K3119-116#23886#24002
35K → 23M8157-149#24002#24151
23M → 24M1543-28#24151#24179
24M → 40K1978-59#24179#24238
40K → 25.2M1013-3#24238#24241
25.2M → Finish2423+1#24241#24240
TOTALS9691651-682
📊

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