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BOSTON MARATHON 2025

Jungho Song

Bib: 972•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 24%
Gender (Male)
#0 / 16105
Top 37%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:12
Rank: #1754
Start → 5K
19:12 | 6:11/mi
10K· 6.21 mi
38:46
Rank: #2082 (-328)
5K → 10K
19:34 | 6:18/mi
15K· 9.32 mi
58:31
Rank: #2251 (-169)
10K → 15K
19:45 | 6:21/mi
20K· 12.43 mi
1:18:37
Rank: #2411 (-160)
15K → 20K
20:06 | 6:28/mi
Half· 13.11 mi
1:23:04
Rank: #2485 (-74)
20K → Half
4:27 | 6:31/mi
25K· 15.53 mi
1:38:45
Rank: #2502 (-17)
Half → 25K
15:41 | 6:28/mi
30K· 18.64 mi
1:59:49
Rank: #2596 (-94)
25K → 30K
21:04 | 6:47/mi
20M
2:09:03
Rank: #2588 (+8)
30K → 20M
9:14 | 6:48/mi
21M
2:16:03
Rank: #2542 (+46)
20M → 21M
7:00 | 7:00/mi
35K· 21.75 mi
2:20:53
Rank: #2513 (+29)
21M → 35K
4:50 | 6:28/mi
23M
2:32:12
Rank: #3152 (-639)
35K → 23M
11:19 | 9:02/mi
24M
2:42:36
Rank: #4127 (-975)
23M → 24M
10:24 | 10:24/mi
40K· 24.85 mi
2:54:31
Rank: #5697 (-1570)
24M → 40K
11:55 | 13:56/mi
25.2M
2:59:16
Rank: #6168 (-471)
40K → 25.2M
4:45 | 13:46/mi
Finish· 26.22 mi
3:09:25
Rank: #6879 (-711)
25.2M → Finish
10:09 | 9:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:04
Pace6:20 /mi
2nd Half
Distance13.11 mi
Time1:46:21
Pace8:07 /mi
📊Positive Split: 28.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:2819:126:1119:12
6:11
-
10K
6.21 mi10:39:0238:466:1419:34
6:18
+0:07
15K
9.32 mi10:58:4758:316:1719:45
6:21
+0:03
20K
12.43 mi11:18:531:18:376:2020:06
6:28
+0:07
Half
13.11 mi11:23:201:23:046:204:27
6:31
+0:03
25K
15.53 mi11:39:011:38:456:2115:41
6:28
-0:03
30K
18.64 mi12:00:051:59:496:2621:04
6:47
+0:19
20M
20.00 mi12:09:192:09:036:279:14
6:48
+0:01
21M
21.00 mi12:16:192:16:036:297:00
7:00
+0:12
35K
21.75 mi12:21:092:20:536:294:50
6:28
-0:32
23M
23.00 mi12:32:282:32:126:3711:19
9:02
+2:34
24M
24.00 mi12:42:522:42:366:4710:24
10:24
+1:22
40K
24.85 mi12:54:472:54:317:0111:55
13:56
+3:32
25.2M
25.20 mi12:59:322:59:167:074:45
13:46
-0:10
Finish
26.22 mi13:09:413:09:257:1410:09
9:58
-3:48

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

6:11 /mi

Average Pace

7:14 /mi

Slowest Pace

13:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:20:53

74% of race

Time at Slower Pace

48:32

26% of race

Average Pace: 7:13 /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 mi10:19:2819:126:1119:12
6:11
#1754
10K
6.21 mi10:39:0238:466:1419:34
6:18
#2082
15K
9.32 mi10:58:4758:316:1719:45
6:21
#2251
20K
12.43 mi11:18:531:18:376:2020:06
6:28
#2411
Half
13.11 mi11:23:201:23:046:204:27
6:31
#2485
25K
15.53 mi11:39:011:38:456:2115:41
6:28
#2502
30K
18.64 mi12:00:051:59:496:2621:04
6:47
#2596
20M
20.00 mi12:09:192:09:036:279:14
6:48
#2588
21M
21.00 mi12:16:192:16:036:297:00
7:00
#2542
35K
21.75 mi12:21:092:20:536:294:50
6:28
#2513
23M
23.00 mi12:32:282:32:126:3711:19
9:02
#3152
24M
24.00 mi12:42:522:42:366:4710:24
10:24
#4127
40K
24.85 mi12:54:472:54:317:0111:55
13:56
#5697
25.2M
25.20 mi12:59:322:59:167:074:45
13:46
#6168
Finish
26.22 mi13:09:413:09:257:1410:09
9:58
#6879
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1754166616662684(Top 9%)2558(Top 16%)2558(Top 45%)
10K6.21 mi3.10 mi2082-3281987-3211987-3212430(Top 9%)2325(Top 14%)2325(Top 41%)
15K9.32 mi3.11 mi2251-1692149-1622149-1622684(Top 9%)2558(Top 16%)2558(Top 45%)
20K12.43 mi3.11 mi2411-1602301-1522301-1522950(Top 10%)2810(Top 17%)2810(Top 50%)
Half13.11 mi0.68 mi2485-742372-712372-713894(Top 14%)3674(Top 23%)3674(Top 65%)
25K15.53 mi2.42 mi2502-172388-162388-162736(Top 10%)2604(Top 16%)2604(Top 46%)
30K18.64 mi3.11 mi2596-942480-922480-923336(Top 12%)3119(Top 19%)3119(Top 55%)
20M20.00 mi1.36 mi2588+82472+82472+82918(Top 10%)2727(Top 17%)2727(Top 48%)
21M21.00 mi1.00 mi2542+462424+482424+482280(Top 8%)2131(Top 13%)2131(Top 38%)
35K21.75 mi0.75 mi2513+292393+312393+312324(Top 8%)2176(Top 14%)2176(Top 39%)
23M23.00 mi1.25 mi3152-6392978-5852978-58516447(Top 58%)10256(Top 64%)10256(Top 182%)
24M24.00 mi1.00 mi4127-9753829-8513829-85122512(Top 79%)13054(Top 81%)13054(Top 231%)
40K24.85 mi0.85 mi5697-15705118-12895118-128927129(Top 96%)15347(Top 95%)15347(Top 272%)
25.2M25.20 mi0.35 mi6168-4715464-3465464-34626013(Top 92%)14747(Top 92%)14747(Top 261%)
Finish26.22 mi1.02 mi6879-7115912-4485912-44822786(Top 80%)13159(Top 82%)13159(Top 233%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2684

Males

2558

M18-39

2558

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2430

Males

2325

M18-39

2325

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2684

Males

2558

M18-39

2558

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2950

Males

2810

M18-39

2810

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3894

Males

3674

M18-39

3674

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2736

Males

2604

M18-39

2604

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3336

Males

3119

M18-39

3119

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2918

Males

2727

M18-39

2727

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2280

Males

2131

M18-39

2131

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2324

Males

2176

M18-39

2176

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16447

Males

10256

M18-39

10256

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

22512

Males

13054

M18-39

13054

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

27129

Males

15347

M18-39

15347

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26013

Males

14747

M18-39

14747

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

22786

Males

13159

M18-39

13159

Passing Analysis

Category:
Athletes Passed
379
Passed By
5504
Net Change
-5125
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1754
5K → 10K21349-328#1754#2082
10K → 15K22191-169#2082#2251
15K → 20K38198-160#2251#2411
20K → Half074-74#2411#2485
Half → 25K4865-17#2485#2502
25K → 30K65159-94#2502#2596
30K → 20M5547+8#2596#2588
20M → 21M7226+46#2588#2542
21M → 35K4516+29#2542#2513
35K → 23M6645-639#2513#3152
23M → 24M2977-975#3152#4127
24M → 40K01570-1570#4127#5697
40K → 25.2M1472-471#5697#6168
25.2M → Finish4715-711#6168#6879
TOTALS3795504-5125
📊

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