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BOSTON MARATHON 2025

John Cho

Bib: 1269•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 1%
Gender (Male)
#0 / 16105
Top 2%
Division (M18-39)
#0 / 5642
Top 5%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:50
Rank: #492
Start → 5K
17:50 | 5:44/mi
10K· 6.21 mi
35:20
Rank: #416 (+76)
5K → 10K
17:30 | 5:38/mi
15K· 9.32 mi
52:49
Rank: #357 (+59)
10K → 15K
17:29 | 5:38/mi
20K· 12.43 mi
1:10:17
Rank: #319 (+38)
15K → 20K
17:28 | 5:37/mi
Half· 13.11 mi
1:14:06
Rank: #319
20K → Half
3:49 | 5:36/mi
25K· 15.53 mi
1:27:56
Rank: #310 (+9)
Half → 25K
13:50 | 5:42/mi
30K· 18.64 mi
1:46:09
Rank: #299 (+11)
25K → 30K
18:13 | 5:52/mi
20M
1:54:19
Rank: #296 (+3)
30K → 20M
8:10 | 6:01/mi
21M
2:00:51
Rank: #311 (-15)
20M → 21M
6:32 | 6:32/mi
35K· 21.75 mi
2:05:19
Rank: #308 (+3)
21M → 35K
4:28 | 5:58/mi
23M
2:13:12
Rank: #311 (-3)
35K → 23M
7:53 | 6:18/mi
24M
2:19:32
Rank: #336 (-25)
23M → 24M
6:20 | 6:20/mi
40K· 24.85 mi
2:25:04
Rank: #343 (-7)
24M → 40K
5:32 | 6:28/mi
25.2M
2:27:29
Rank: #346 (-3)
40K → 25.2M
2:25 | 7:00/mi
Finish· 26.22 mi
2:33:47
Rank: #359 (-13)
25.2M → Finish
6:18 | 6:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:14:06
Pace5:39 /mi
2nd Half
Distance13.11 mi
Time1:19:41
Pace6:05 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3217:505:4417:50
5:44
-
10K
6.21 mi10:36:0235:205:4117:30
5:38
-0:06
15K
9.32 mi10:53:3152:495:4017:29
5:38
0:00
20K
12.43 mi11:10:591:10:175:3917:28
5:37
-0:01
Half
13.11 mi11:14:481:14:065:393:49
5:36
-0:01
25K
15.53 mi11:28:381:27:565:4013:50
5:42
+0:06
30K
18.64 mi11:46:511:46:095:4218:13
5:52
+0:10
20M
20.00 mi11:55:011:54:195:438:10
6:01
+0:09
21M
21.00 mi12:01:332:00:515:456:32
6:32
+0:31
35K
21.75 mi12:06:012:05:195:464:28
5:58
-0:34
23M
23.00 mi12:13:542:13:125:477:53
6:18
+0:20
24M
24.00 mi12:20:142:19:325:496:20
6:20
+0:02
40K
24.85 mi12:25:462:25:045:505:32
6:28
+0:08
25.2M
25.20 mi12:28:112:27:295:512:25
7:00
+0:32
Finish
26.22 mi12:34:292:33:475:526:18
6:11
-0:49

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

5:36 /mi

Average Pace

5:52 /mi

Slowest Pace

7:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:56

57% of race

Time at Steady Pace

30:51

20% of race

Time at Slower Pace

35:00

23% of race

Average Pace: 5:52 /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 mi10:18:3217:505:4417:50
5:44
#492
10K
6.21 mi10:36:0235:205:4117:30
5:38
#416
15K
9.32 mi10:53:3152:495:4017:29
5:38
#357
20K
12.43 mi11:10:591:10:175:3917:28
5:37
#319
Half
13.11 mi11:14:481:14:065:393:49
5:36
#319
25K
15.53 mi11:28:381:27:565:4013:50
5:42
#310
30K
18.64 mi11:46:511:46:095:4218:13
5:52
#299
20M
20.00 mi11:55:011:54:195:438:10
6:01
#296
21M
21.00 mi12:01:332:00:515:456:32
6:32
#311
35K
21.75 mi12:06:012:05:195:464:28
5:58
#308
23M
23.00 mi12:13:542:13:125:477:53
6:18
#311
24M
24.00 mi12:20:142:19:325:496:20
6:20
#336
40K
24.85 mi12:25:462:25:045:505:32
6:28
#343
25.2M
25.20 mi12:28:112:27:295:512:25
7:00
#346
Finish
26.22 mi12:34:292:33:475:526:18
6:11
#359
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi492454454278(Top 1.0%)250(Top 2%)250(Top 4%)
10K6.21 mi3.10 mi416+76382+72382+72334(Top 1%)305(Top 2%)305(Top 5%)
15K9.32 mi3.11 mi357+59327+55327+55278(Top 1.0%)250(Top 2%)250(Top 4%)
20K12.43 mi3.11 mi319+38290+37290+37220(Top 0.8%)196(Top 1%)196(Top 3%)
Half13.11 mi0.68 mi319290290299(Top 1%)274(Top 2%)274(Top 5%)
25K15.53 mi2.42 mi310+9282+8282+8292(Top 1%)266(Top 2%)266(Top 5%)
30K18.64 mi3.11 mi299+11272+10272+10312(Top 1%)288(Top 2%)288(Top 5%)
20M20.00 mi1.36 mi296+3269+3269+3398(Top 1%)372(Top 2%)372(Top 7%)
21M21.00 mi1.00 mi311-15284-15284-15741(Top 3%)700(Top 4%)700(Top 12%)
35K21.75 mi0.75 mi308+3282+2282+2646(Top 2%)603(Top 4%)603(Top 11%)
23M23.00 mi1.25 mi311-3286-4286-4857(Top 3%)808(Top 5%)808(Top 14%)
24M24.00 mi1.00 mi336-25309-23309-231378(Top 5%)1289(Top 8%)1289(Top 23%)
40K24.85 mi0.85 mi343-7316-7316-71480(Top 5%)1367(Top 8%)1367(Top 24%)
25.2M25.20 mi0.35 mi346-3319-3319-31440(Top 5%)1311(Top 8%)1311(Top 23%)
Finish26.22 mi1.02 mi359-13330-11330-111443(Top 5%)1341(Top 8%)1341(Top 24%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1.0%
×21stories
+97ft-345ft

Overall

278

Males

250

M18-39

250

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

334

Males

305

M18-39

305

10K→15K

6.2 - 9.3 mi

Top 1.0%
×3stories
+67ft-78ft

Overall

278

Males

250

M18-39

250

15K→20K

9.3 - 12.4 mi

Top 0.8%
×5stories
+106ft-86ft

Overall

220

Males

196

M18-39

196

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

299

Males

274

M18-39

274

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

292

Males

266

M18-39

266

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

312

Males

288

M18-39

288

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

398

Males

372

M18-39

372

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

741

Males

700

M18-39

700

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

646

Males

603

M18-39

603

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

857

Males

808

M18-39

808

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1378

Males

1289

M18-39

1289

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1480

Males

1367

M18-39

1367

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1440

Males

1311

M18-39

1311

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1443

Males

1341

M18-39

1341

Passing Analysis

Category:
Athletes Passed
261
Passed By
128
Net Change
+133
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#492
5K → 10K848+76#492#416
10K → 15K590+59#416#357
15K → 20K380+38#357#319
20K → Half330#319#319
Half → 25K156+9#319#310
25K → 30K2110+11#310#299
30K → 20M85+3#299#296
20M → 21M015-15#296#311
21M → 35K74+3#311#308
35K → 23M912-3#308#311
23M → 24M328-25#311#336
24M → 40K411-7#336#343
40K → 25.2M36-3#343#346
25.2M → Finish720-13#346#359
TOTALS261128+133
📊

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