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BOSTON MARATHON 2025

Ryo Kobayashi

Bib: 8065•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 16%
Gender (Male)
#0 / 16105
Top 25%
Masters (Masters Men)
#0 / 10463
Top 12%
Division (M40-44)
#0 / 2247
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:56
Rank: #5783
Start → 5K
20:56 | 6:44/mi
10K· 6.21 mi
41:46
Rank: #5583 (+200)
5K → 10K
20:50 | 6:42/mi
15K· 9.32 mi
1:02:24
Rank: #5216 (+367)
10K → 15K
20:38 | 6:38/mi
20K· 12.43 mi
1:23:00
Rank: #4812 (+404)
15K → 20K
20:36 | 6:38/mi
Half· 13.11 mi
1:27:37
Rank: #4863 (-51)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:43:57
Rank: #4724 (+139)
Half → 25K
16:20 | 6:44/mi
30K· 18.64 mi
2:05:16
Rank: #4486 (+238)
25K → 30K
21:19 | 6:52/mi
20M
2:14:42
Rank: #4384 (+102)
30K → 20M
9:26 | 6:57/mi
21M
2:22:07
Rank: #4338 (+46)
20M → 21M
7:25 | 7:25/mi
35K· 21.75 mi
2:27:24
Rank: #4386 (-48)
21M → 35K
5:17 | 7:04/mi
23M
2:36:22
Rank: #4376 (+10)
35K → 23M
8:58 | 7:10/mi
24M
2:43:18
Rank: #4342 (+34)
23M → 24M
6:56 | 6:56/mi
40K· 24.85 mi
2:49:23
Rank: #4339 (+3)
24M → 40K
6:05 | 7:07/mi
25.2M
2:52:10
Rank: #4374 (-35)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
2:59:18
Rank: #4451 (-77)
25.2M → Finish
7:08 | 7:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:37
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:31:41
Pace7:00 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:0220:566:4420:56
6:44
-
10K
6.21 mi10:49:5241:466:4320:50
6:42
-0:02
15K
9.32 mi11:10:301:02:246:4220:38
6:38
-0:04
20K
12.43 mi11:31:061:23:006:4120:36
6:38
0:00
Half
13.11 mi11:35:431:27:376:414:37
6:46
+0:08
25K
15.53 mi11:52:031:43:576:4116:20
6:44
-0:02
30K
18.64 mi12:13:222:05:166:4321:19
6:52
+0:08
20M
20.00 mi12:22:482:14:426:449:26
6:57
+0:05
21M
21.00 mi12:30:132:22:076:467:25
7:25
+0:28
35K
21.75 mi12:35:302:27:246:475:17
7:04
-0:21
23M
23.00 mi12:44:282:36:226:488:58
7:10
+0:06
24M
24.00 mi12:51:242:43:186:486:56
6:56
-0:14
40K
24.85 mi12:57:292:49:236:496:05
7:07
+0:11
25.2M
25.20 mi13:00:162:52:106:502:47
8:04
+0:57
Finish
26.22 mi13:07:242:59:186:517:08
7:00
-1:04

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

6:38 /mi

Average Pace

6:51 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:20

55% of race

Time at Steady Pace

54:43

31% of race

Time at Slower Pace

25:15

14% of race

Average Pace: 6:50 /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 mi10:29:0220:566:4420:56
6:44
#5783
10K
6.21 mi10:49:5241:466:4320:50
6:42
#5583
15K
9.32 mi11:10:301:02:246:4220:38
6:38
#5216
20K
12.43 mi11:31:061:23:006:4120:36
6:38
#4812
Half
13.11 mi11:35:431:27:376:414:37
6:46
#4863
25K
15.53 mi11:52:031:43:576:4116:20
6:44
#4724
30K
18.64 mi12:13:222:05:166:4321:19
6:52
#4486
20M
20.00 mi12:22:482:14:426:449:26
6:57
#4384
21M
21.00 mi12:30:132:22:076:467:25
7:25
#4338
35K
21.75 mi12:35:302:27:246:475:17
7:04
#4386
23M
23.00 mi12:44:282:36:226:488:58
7:10
#4376
24M
24.00 mi12:51:242:43:186:486:56
6:56
#4342
40K
24.85 mi12:57:292:49:236:496:05
7:07
#4339
25.2M
25.20 mi13:00:162:52:106:502:47
8:04
#4374
Finish
26.22 mi13:07:242:59:186:517:08
7:00
#4451
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5783533553354594(Top 16%)4301(Top 27%)4301(Top 191%)
10K6.21 mi3.10 mi5583+2005161+1745161+1745390(Top 19%)4982(Top 31%)4982(Top 222%)
15K9.32 mi3.11 mi5216+3674847+3144847+3144594(Top 16%)4301(Top 27%)4301(Top 191%)
20K12.43 mi3.11 mi4812+4044487+3604487+3603907(Top 14%)3681(Top 23%)3681(Top 164%)
Half13.11 mi0.68 mi4863-514532-454532-455829(Top 21%)5316(Top 33%)5316(Top 237%)
25K15.53 mi2.42 mi4724+1394400+1324400+1324392(Top 15%)4070(Top 25%)4070(Top 181%)
30K18.64 mi3.11 mi4486+2384189+2114189+2113836(Top 14%)3544(Top 22%)3544(Top 158%)
20M20.00 mi1.36 mi4384+1024089+1004089+1003785(Top 13%)3484(Top 22%)3484(Top 155%)
21M21.00 mi1.00 mi4338+464034+554034+554207(Top 15%)3786(Top 24%)3786(Top 168%)
35K21.75 mi0.75 mi4386-484069-354069-355768(Top 20%)4904(Top 30%)4904(Top 218%)
23M23.00 mi1.25 mi4376+104051+184051+184661(Top 16%)4076(Top 25%)4076(Top 181%)
24M24.00 mi1.00 mi4342+344009+424009+424270(Top 15%)3751(Top 23%)3751(Top 167%)
40K24.85 mi0.85 mi4339+34000+94000+94575(Top 16%)3907(Top 24%)3907(Top 174%)
25.2M25.20 mi0.35 mi4374-354027-274027-276272(Top 22%)4905(Top 30%)4905(Top 218%)
Finish26.22 mi1.02 mi4451-774084-574084-575720(Top 20%)4557(Top 28%)4557(Top 203%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4594

Males

4301

M40-44

4301

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5390

Males

4982

M40-44

4982

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4594

Males

4301

M40-44

4301

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3907

Males

3681

M40-44

3681

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5829

Males

5316

M40-44

5316

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4392

Males

4070

M40-44

4070

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3836

Males

3544

M40-44

3544

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3785

Males

3484

M40-44

3484

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4207

Males

3786

M40-44

3786

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5768

Males

4904

M40-44

4904

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4661

Males

4076

M40-44

4076

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4270

Males

3751

M40-44

3751

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4575

Males

3907

M40-44

3907

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

6272

Males

4905

M40-44

4905

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5720

Males

4557

M40-44

4557

Passing Analysis

Category:
Athletes Passed
2034
Passed By
702
Net Change
+1332
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5783
5K → 10K306106+200#5783#5583
10K → 15K38417+367#5583#5216
15K → 20K4106+404#5216#4812
20K → Half1162-51#4812#4863
Half → 25K17334+139#4863#4724
25K → 30K27335+238#4724#4486
30K → 20M12523+102#4486#4384
20M → 21M9347+46#4384#4338
21M → 35K3179-48#4338#4386
35K → 23M7262+10#4386#4376
23M → 24M6935+34#4376#4342
24M → 40K4946+3#4342#4339
40K → 25.2M1449-35#4339#4374
25.2M → Finish24101-77#4374#4451
TOTALS2034702+1332
📊

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