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BOSTON MARATHON 2025

Kosei Oki

Bib: 679•M

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 0.8%
Gender (Male)
#0 / 16105
Top 1%
Division (M18-39)
#0 / 5642
Top 3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:04
Rank: #214
Start → 5K
17:04 | 5:30/mi
10K· 6.21 mi
34:20
Rank: #238 (-24)
5K → 10K
17:16 | 5:33/mi
15K· 9.32 mi
51:45
Rank: #238
10K → 15K
17:25 | 5:36/mi
20K· 12.43 mi
1:09:16
Rank: #230 (+8)
15K → 20K
17:31 | 5:38/mi
Half· 13.11 mi
1:13:01
Rank: #225 (+5)
20K → Half
3:45 | 5:30/mi
25K· 15.53 mi
1:26:31
Rank: #216 (+9)
Half → 25K
13:30 | 5:34/mi
30K· 18.64 mi
1:44:34
Rank: #205 (+11)
25K → 30K
18:03 | 5:49/mi
20M
1:52:33
Rank: #197 (+8)
30K → 20M
7:59 | 5:52/mi
21M
1:58:56
Rank: #201 (-4)
20M → 21M
6:23 | 6:23/mi
35K· 21.75 mi
2:03:25
Rank: #207 (-6)
21M → 35K
4:29 | 6:00/mi
23M
2:11:05
Rank: #215 (-8)
35K → 23M
7:40 | 6:07/mi
24M
2:17:04
Rank: #218 (-3)
23M → 24M
5:59 | 5:59/mi
40K· 24.85 mi
2:22:14
Rank: #222 (-4)
24M → 40K
5:10 | 6:03/mi
25.2M
2:24:26
Rank: #218 (+4)
40K → 25.2M
2:12 | 6:23/mi
Finish· 26.22 mi
2:30:17
Rank: #217 (+1)
25.2M → Finish
5:51 | 5:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:13:01
Pace5:34 /mi
2nd Half
Distance13.11 mi
Time1:17:16
Pace5:54 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:0917:045:3017:04
5:30
-
10K
6.21 mi10:34:2534:205:3217:16
5:33
+0:03
15K
9.32 mi10:51:5051:455:3317:25
5:36
+0:03
20K
12.43 mi11:09:211:09:165:3417:31
5:38
+0:02
Half
13.11 mi11:13:061:13:015:343:45
5:30
-0:08
25K
15.53 mi11:26:361:26:315:3413:30
5:34
+0:04
30K
18.64 mi11:44:391:44:345:3718:03
5:49
+0:15
20M
20.00 mi11:52:381:52:335:387:59
5:52
+0:03
21M
21.00 mi11:59:011:58:565:406:23
6:23
+0:31
35K
21.75 mi12:03:302:03:255:404:29
6:00
-0:23
23M
23.00 mi12:11:102:11:055:427:40
6:07
+0:07
24M
24.00 mi12:17:092:17:045:435:59
5:59
-0:08
40K
24.85 mi12:22:192:22:145:435:10
6:03
+0:04
25.2M
25.20 mi12:24:312:24:265:442:12
6:23
+0:20
Finish
26.22 mi12:30:222:30:175:445:51
5:44
-0:39

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

5:30 /mi

Average Pace

5:44 /mi

Slowest Pace

6:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:02

89% of race

Time at Steady Pace

16:15

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:44 /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 mi10:17:0917:045:3017:04
5:30
#214
10K
6.21 mi10:34:2534:205:3217:16
5:33
#238
15K
9.32 mi10:51:5051:455:3317:25
5:36
#238
20K
12.43 mi11:09:211:09:165:3417:31
5:38
#230
Half
13.11 mi11:13:061:13:015:343:45
5:30
#225
25K
15.53 mi11:26:361:26:315:3413:30
5:34
#216
30K
18.64 mi11:44:391:44:345:3718:03
5:49
#205
20M
20.00 mi11:52:381:52:335:387:59
5:52
#197
21M
21.00 mi11:59:011:58:565:406:23
6:23
#201
35K
21.75 mi12:03:302:03:255:404:29
6:00
#207
23M
23.00 mi12:11:102:11:055:427:40
6:07
#215
24M
24.00 mi12:17:092:17:045:435:59
5:59
#218
40K
24.85 mi12:22:192:22:145:435:10
6:03
#222
25.2M
25.20 mi12:24:312:24:265:442:12
6:23
#218
Finish
26.22 mi12:30:222:30:175:445:51
5:44
#217
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi214188188251(Top 0.9%)223(Top 1%)223(Top 4%)
10K6.21 mi3.10 mi238-24209-21209-21256(Top 0.9%)227(Top 1%)227(Top 4%)
15K9.32 mi3.11 mi238210-1210-1251(Top 0.9%)223(Top 1%)223(Top 4%)
20K12.43 mi3.11 mi230+8204+6204+6243(Top 0.9%)219(Top 1%)219(Top 4%)
Half13.11 mi0.68 mi225+5199+5199+5189(Top 0.7%)167(Top 1%)167(Top 3%)
25K15.53 mi2.42 mi216+9190+9190+9173(Top 0.6%)150(Top 0.9%)150(Top 3%)
30K18.64 mi3.11 mi205+11182+8182+8254(Top 0.9%)232(Top 1%)232(Top 4%)
20M20.00 mi1.36 mi197+8174+8174+8244(Top 0.9%)224(Top 1%)224(Top 4%)
21M21.00 mi1.00 mi201-4179-5179-5479(Top 2%)450(Top 3%)450(Top 8%)
35K21.75 mi0.75 mi207-6185-6185-6694(Top 2%)647(Top 4%)647(Top 11%)
23M23.00 mi1.25 mi215-8193-8193-8514(Top 2%)484(Top 3%)484(Top 9%)
24M24.00 mi1.00 mi218-3196-3196-3531(Top 2%)495(Top 3%)495(Top 9%)
40K24.85 mi0.85 mi222-4200-4200-4434(Top 2%)402(Top 2%)402(Top 7%)
25.2M25.20 mi0.35 mi218+4196+4196+4287(Top 1%)265(Top 2%)265(Top 5%)
Finish26.22 mi1.02 mi217+1195+1195+1407(Top 1%)381(Top 2%)381(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.9%
×21stories
+97ft-345ft

Overall

251

Males

223

M18-39

223

5K→10K

3.1 - 6.2 mi

Top 0.9%
×5stories
+79ft-138ft

Overall

256

Males

227

M18-39

227

10K→15K

6.2 - 9.3 mi

Top 0.9%
×3stories
+67ft-78ft

Overall

251

Males

223

M18-39

223

15K→20K

9.3 - 12.4 mi

Top 0.9%
×5stories
+106ft-86ft

Overall

243

Males

219

M18-39

219

20K→Half

12.4 - 13.1 mi

Top 0.7%
×2stories
+19ft-37ft

Overall

189

Males

167

M18-39

167

Half→25K

13.1 - 15.5 mi

Top 0.6%
×4stories
+66ft-88ft

Overall

173

Males

150

M18-39

150

25K→30K

15.5 - 18.6 mi

Top 0.9%
×9stories
+181ft-148ft

Overall

254

Males

232

M18-39

232

30K→20M

18.6 - 20.0 mi

Top 0.9%
×5stories
+64ft-50ft

Overall

244

Males

224

M18-39

224

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

479

Males

450

M18-39

450

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

694

Males

647

M18-39

647

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

514

Males

484

M18-39

484

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

531

Males

495

M18-39

495

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

434

Males

402

M18-39

402

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

287

Males

265

M18-39

265

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

407

Males

381

M18-39

381

Passing Analysis

Category:
Athletes Passed
98
Passed By
101
Net Change
-3
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#214
5K → 10K832-24#214#238
10K → 15K990#238#238
15K → 20K135+8#238#230
20K → Half50+5#230#225
Half → 25K123+9#225#216
25K → 30K165+11#216#205
30K → 20M91+8#205#197
20M → 21M48-4#197#201
21M → 35K06-6#201#207
35K → 23M715-8#207#215
23M → 24M47-3#215#218
24M → 40K26-4#218#222
40K → 25.2M40+4#222#218
25.2M → Finish54+1#218#217
TOTALS98101-3
📊

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