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BOSTON MARATHON 2025

Jung Woo Lee

Bib: 14029•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:25/mi
23:02
↑ 97↓ 3451.5%
10K· 6.21 mi
7:44/mi
47:05
↑ 79↓ 1380.4%
15K· 9.32 mi
7:45/mi
1:11:11
↑ 67↓ 78
20K· 12.43 mi
7:44/mi
1:35:14
↑ 106↓ 860.1%
Half· 13.11 mi
7:34/mi
1:40:24
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:58:48
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:23:22
↑ 181↓ 1480.2%
20M
8:33/mi
2:34:59
↑ 64↓ 500.2%
21M
10:02/mi
2:45:01
↑ 106↓ 241.6%
35K· 21.75 mi
9:31/mi
2:52:08
↑ 17↓ 861.7%
23M
9:11/mi
3:03:38
↑ 23↓ 630.6%
24M
9:18/mi
3:12:56
↓ 821.3%
40K· 24.85 mi
9:10/mi
3:20:46
↓ 200.3%
25.2M
11:56/mi
3:24:53
↑ 13↓ 160.2%
Finish· 26.22 mi
10:23/mi
3:35:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:24
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:55:04
Pace8:47 /mi
📊Positive Split: 14.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:03:2523:027:2523:02
7:25
-
10K
6.21 mi11:27:2847:057:3524:03
7:44
+0:19
15K
9.32 mi11:51:341:11:117:3824:06
7:45
+0:01
20K
12.43 mi12:15:371:35:147:4024:03
7:44
-0:01
Half
13.11 mi12:20:471:40:247:405:10
7:34
-0:10
25K
15.53 mi12:39:111:58:487:3918:24
7:35
+0:01
30K
18.64 mi13:03:452:23:227:4124:34
7:54
+0:19
20M
20.00 mi13:15:222:34:597:4511:37
8:33
+0:39
21M
21.00 mi13:25:242:45:017:5110:02
10:02
+1:29
35K
21.75 mi13:32:312:52:087:557:07
9:31
-0:31
23M
23.00 mi13:44:013:03:387:5911:30
9:11
-0:20
24M
24.00 mi13:53:193:12:568:029:18
9:18
+0:07
40K
24.85 mi14:01:093:20:468:057:50
9:10
-0:08
25.2M
25.20 mi14:05:163:24:538:084:07
11:56
+2:46
Finish
26.22 mi14:15:513:35:288:1310:35
10:23
-1:33

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

7:25 /mi

Average Pace

8:13 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:22

67% of race

Time at Steady Pace

19:27

9% of race

Time at Slower Pace

52:39

24% of race

Average Pace: 8:13 /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 mi11:03:2523:027:2523:02
7:25
#11462
10K
6.21 mi11:27:2847:057:3524:03
7:44
#12812
15K
9.32 mi11:51:341:11:117:3824:06
7:45
#13203
20K
12.43 mi12:15:371:35:147:4024:03
7:44
#13038
Half
13.11 mi12:20:471:40:247:405:10
7:34
#12989
25K
15.53 mi12:39:111:58:487:3918:24
7:35
#12573
30K
18.64 mi13:03:452:23:227:4124:34
7:54
#12184
20M
20.00 mi13:15:222:34:597:4511:37
8:33
#12314
21M
21.00 mi13:25:242:45:017:5110:02
10:02
#12763
35K
21.75 mi13:32:312:52:087:557:07
9:31
#13133
23M
23.00 mi13:44:013:03:387:5911:30
9:11
#13401
24M
24.00 mi13:53:193:12:568:029:18
9:18
#13712
40K
24.85 mi14:01:093:20:468:057:50
9:10
#13867
25.2M
25.20 mi14:05:163:24:538:084:07
11:56
#14125
Finish
26.22 mi14:15:513:35:288:1310:35
10:23
#14681
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi114628925892513987(Top 49%)9936(Top 62%)9936(Top 498%)
10K6.21 mi3.10 mi12812-13509540-6159540-61514247(Top 50%)10102(Top 63%)10102(Top 506%)
15K9.32 mi3.11 mi13203-3919650-1109650-11013987(Top 49%)9936(Top 62%)9936(Top 498%)
20K12.43 mi3.11 mi13038+1659531+1199531+11912755(Top 45%)9309(Top 58%)9309(Top 466%)
Half13.11 mi0.68 mi12989+499510+219510+2112326(Top 43%)9181(Top 57%)9181(Top 460%)
25K15.53 mi2.42 mi12573+4169308+2029308+20210678(Top 38%)8240(Top 51%)8240(Top 413%)
30K18.64 mi3.11 mi12184+3899065+2439065+24310695(Top 38%)8029(Top 50%)8029(Top 402%)
20M20.00 mi1.36 mi12314-1309080-159080-1514077(Top 50%)9487(Top 59%)9487(Top 475%)
21M21.00 mi1.00 mi12763-4499249-1699249-16918406(Top 65%)11338(Top 70%)11338(Top 568%)
35K21.75 mi0.75 mi13133-3709401-1529401-15220354(Top 72%)12131(Top 75%)12131(Top 608%)
23M23.00 mi1.25 mi13401-2689466-659466-6517236(Top 61%)10615(Top 66%)10615(Top 532%)
24M24.00 mi1.00 mi13712-3119580-1149580-11418795(Top 66%)11309(Top 70%)11309(Top 567%)
40K24.85 mi0.85 mi13867-1559605-259605-2517154(Top 60%)10444(Top 65%)10444(Top 523%)
25.2M25.20 mi0.35 mi14125-2589728-1239728-12323060(Top 81%)13303(Top 83%)13303(Top 666%)
Finish26.22 mi1.02 mi14681-5569948-2209948-22023987(Top 84%)13755(Top 85%)13755(Top 689%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13987

Males

9936

M50-54

9936

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

14247

Males

10102

M50-54

10102

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13987

Males

9936

M50-54

9936

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12755

Males

9309

M50-54

9309

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

12326

Males

9181

M50-54

9181

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10678

Males

8240

M50-54

8240

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10695

Males

8029

M50-54

8029

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

14077

Males

9487

M50-54

9487

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

18406

Males

11338

M50-54

11338

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

20354

Males

12131

M50-54

12131

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17236

Males

10615

M50-54

10615

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18795

Males

11309

M50-54

11309

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17154

Males

10444

M50-54

10444

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

23060

Males

13303

M50-54

13303

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

23987

Males

13755

M50-54

13755

Passing Analysis

Category:
Athletes Passed
1599
Passed By
4818
Net Change
-3219
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11462
5K → 10K221372-1350#11462#12812
10K → 15K89480-391#12812#13203
15K → 20K286121+165#13203#13038
20K → Half7021+49#13038#12989
Half → 25K4237+416#12989#12573
25K → 30K45667+389#12573#12184
30K → 20M80210-130#12184#12314
20M → 21M30479-449#12314#12763
21M → 35K9379-370#12763#13133
35K → 23M50318-268#13133#13401
23M → 24M23334-311#13401#13712
24M → 40K47202-155#13712#13867
40K → 25.2M3261-258#13867#14125
25.2M → Finish11567-556#14125#14681
TOTALS15994818-3219
📊

Passing Visuals

Category:
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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