Boston Marathon logo
BOSTON MARATHON 2023

Akira Kogawa

Bib: 20862•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:16
Rank: #17233
Start → 5K
26:16 | 8:27/mi
10K· 6.21 mi
51:55
Rank: #16887 (+346)
5K → 10K
25:39 | 8:15/mi
15K· 9.32 mi
1:17:33
Rank: #16657 (+230)
10K → 15K
25:38 | 8:15/mi
20K· 12.43 mi
1:43:24
Rank: #16422 (+235)
15K → 20K
25:51 | 8:19/mi
Half· 13.11 mi
1:48:57
Rank: #16369 (+53)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:09:52
Rank: #16474 (-105)
Half → 25K
20:55 | 8:38/mi
30K· 18.64 mi
2:35:46
Rank: #15845 (+629)
25K → 30K
25:54 | 8:20/mi
20M
2:47:21
Rank: #15659 (+186)
30K → 20M
11:35 | 8:31/mi
21M
2:56:20
Rank: #15510 (+149)
20M → 21M
8:59 | 8:59/mi
35K· 21.75 mi
3:02:20
Rank: #15379 (+131)
21M → 35K
6:00 | 8:01/mi
23M
3:12:42
Rank: #15142 (+237)
35K → 23M
10:22 | 8:17/mi
24M
3:20:38
Rank: #14964 (+178)
23M → 24M
7:56 | 7:56/mi
40K· 24.85 mi
3:27:28
Rank: #14758 (+206)
24M → 40K
6:50 | 8:00/mi
25.2M
3:30:18
Rank: #14653 (+105)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:37:57
Rank: #14421 (+232)
25.2M → Finish
7:39 | 7:30/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:48:57
Pace8:19 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:49:00
Pace8:19 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5426:168:2726:16
8:27
-
10K
6.21 mi11:44:3351:558:2125:39
8:15
-0:12
15K
9.32 mi12:10:111:17:338:1925:38
8:15
0:00
20K
12.43 mi12:36:021:43:248:1925:51
8:19
+0:04
Half
13.11 mi12:41:351:48:578:195:33
8:08
-0:11
25K
15.53 mi13:02:302:09:528:2220:55
8:38
+0:30
30K
18.64 mi13:28:242:35:468:2125:54
8:20
-0:18
20M
20.00 mi13:39:592:47:218:2211:35
8:31
+0:11
21M
21.00 mi13:48:582:56:208:248:59
8:59
+0:28
35K
21.75 mi13:54:583:02:208:236:00
8:01
-0:58
23M
23.00 mi14:05:203:12:428:2310:22
8:17
+0:16
24M
24.00 mi14:13:163:20:388:227:56
7:56
-0:21
40K
24.85 mi14:20:063:27:288:216:50
8:00
+0:04
25.2M
25.20 mi14:22:563:30:188:212:50
8:13
+0:13
Finish
26.22 mi14:30:353:37:578:197:39
7:30
-0:43

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

7:30 /mi

Average Pace

8:19 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

36:48

17% of race

Time at Steady Pace

2:52:10

79% of race

Time at Slower Pace

8:59

4% of race

Average Pace: 8:19 /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 mi11:18:5426:168:2726:16
8:27
#17233
10K
6.21 mi11:44:3351:558:2125:39
8:15
#16887
15K
9.32 mi12:10:111:17:338:1925:38
8:15
#16657
20K
12.43 mi12:36:021:43:248:1925:51
8:19
#16422
Half
13.11 mi12:41:351:48:578:195:33
8:08
#16369
25K
15.53 mi13:02:302:09:528:2220:55
8:38
#16474
30K
18.64 mi13:28:242:35:468:2125:54
8:20
#15845
20M
20.00 mi13:39:592:47:218:2211:35
8:31
#15659
21M
21.00 mi13:48:582:56:208:248:59
8:59
#15510
35K
21.75 mi13:54:583:02:208:236:00
8:01
#15379
23M
23.00 mi14:05:203:12:428:2310:22
8:17
#15142
24M
24.00 mi14:13:163:20:388:227:56
7:56
#14964
40K
24.85 mi14:20:063:27:288:216:50
8:00
#14758
25.2M
25.20 mi14:22:563:30:188:212:50
8:13
#14653
Finish
26.22 mi14:30:353:37:578:197:39
7:30
#14421
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17233111231112316215(Top 61%)10772(Top 71%)10772(Top 970%)
10K6.21 mi3.10 mi16887+34611030+9311030+9316609(Top 62%)10942(Top 72%)10942(Top 986%)
15K9.32 mi3.11 mi16657+23010935+9510935+9516215(Top 61%)10772(Top 71%)10772(Top 970%)
20K12.43 mi3.11 mi16422+23510840+9510840+9515717(Top 59%)10523(Top 69%)10523(Top 948%)
Half13.11 mi0.68 mi16369+5310813+2710813+2715297(Top 57%)10409(Top 69%)10409(Top 938%)
25K15.53 mi2.42 mi16474-10510829-1610829-1616943(Top 64%)10940(Top 72%)10940(Top 986%)
30K18.64 mi3.11 mi15845+62910545+28410545+28413267(Top 50%)9353(Top 62%)9353(Top 843%)
20M20.00 mi1.36 mi15659+18610453+9210453+9213766(Top 52%)9473(Top 62%)9473(Top 853%)
21M21.00 mi1.00 mi15510+14910367+8610367+8613299(Top 50%)9180(Top 60%)9180(Top 827%)
35K21.75 mi0.75 mi15379+13110301+6610301+6612262(Top 46%)8680(Top 57%)8680(Top 782%)
23M23.00 mi1.25 mi15142+23710199+10210199+10211742(Top 44%)8360(Top 55%)8360(Top 753%)
24M24.00 mi1.00 mi14964+17810110+8910110+8910775(Top 40%)7798(Top 51%)7798(Top 703%)
40K24.85 mi0.85 mi14758+20610006+10410006+1049996(Top 38%)7347(Top 48%)7347(Top 662%)
25.2M25.20 mi0.35 mi14653+1059951+559951+557797(Top 29%)6073(Top 40%)6073(Top 547%)
Finish26.22 mi1.02 mi14421+2329852+999852+998609(Top 32%)6539(Top 43%)6539(Top 589%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16215

Males

10772

M60-64

10772

5K→10K

3.1 - 6.2 mi

Top 62%
×5stories
+79ft-138ft

Overall

16609

Males

10942

M60-64

10942

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16215

Males

10772

M60-64

10772

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

15717

Males

10523

M60-64

10523

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15297

Males

10409

M60-64

10409

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

16943

Males

10940

M60-64

10940

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

13267

Males

9353

M60-64

9353

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

13766

Males

9473

M60-64

9473

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

13299

Males

9180

M60-64

9180

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12262

Males

8680

M60-64

8680

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11742

Males

8360

M60-64

8360

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

10775

Males

7798

M60-64

7798

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

9996

Males

7347

M60-64

7347

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7797

Males

6073

M60-64

6073

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8609

Males

6539

M60-64

6539

Passing Analysis

Category:
Athletes Passed
3428
Passed By
616
Net Change
+2812
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17233
5K → 10K530184+346#17233#16887
10K → 15K334104+230#16887#16657
15K → 20K29257+235#16657#16422
20K → Half6613+53#16422#16369
Half → 25K98203-105#16369#16474
25K → 30K6345+629#16474#15845
30K → 20M19913+186#15845#15659
20M → 21M16920+149#15659#15510
21M → 35K1332+131#15510#15379
35K → 23M2436+237#15379#15142
23M → 24M1835+178#15142#14964
24M → 40K2071+206#14964#14758
40K → 25.2M1050+105#14758#14653
25.2M → Finish2353+232#14653#14421
TOTALS3428616+2812
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing