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BOSTON MARATHON 2025

Hyun Joong Lee

Bib: 11507•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
9:25/mi
29:16
↑ 97↓ 3451.5%
10K· 6.21 mi
9:38/mi
59:12
↑ 79↓ 1380.4%
15K· 9.32 mi
10:14/mi
1:31:01
↑ 67↓ 78
20K· 12.43 mi
9:45/mi
2:01:17
↑ 106↓ 860.1%
Half· 13.11 mi
9:18/mi
2:07:38
↑ 19↓ 370.5%
25K· 15.53 mi
10:04/mi
2:32:03
↑ 66↓ 880.2%
30K· 18.64 mi
10:11/mi
3:03:41
↑ 181↓ 1480.2%
20M
10:37/mi
3:18:06
↑ 64↓ 500.2%
21M
11:36/mi
3:29:42
↑ 106↓ 241.6%
35K· 21.75 mi
9:41/mi
3:36:57
↑ 17↓ 861.7%
23M
10:17/mi
3:49:50
↑ 23↓ 630.6%
24M
9:40/mi
3:59:30
↓ 821.3%
40K· 24.85 mi
10:04/mi
4:08:06
↓ 200.3%
25.2M
10:35/mi
4:11:45
↑ 13↓ 160.2%
Finish· 26.22 mi
9:21/mi
4:21:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:38
Pace9:44 /mi
2nd Half
Distance13.11 mi
Time2:13:39
Pace10:12 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:30:2329:169:2529:16
9:25
-
10K
6.21 mi12:00:1959:129:3229:56
9:38
+0:13
15K
9.32 mi12:32:081:31:019:4631:49
10:14
+0:36
20K
12.43 mi13:02:242:01:179:4630:16
9:45
-0:29
Half
13.11 mi13:08:452:07:389:446:21
9:18
-0:27
25K
15.53 mi13:33:102:32:039:4724:25
10:04
+0:46
30K
18.64 mi14:04:483:03:419:5131:38
10:11
+0:07
20M
20.00 mi14:19:133:18:069:5414:25
10:37
+0:26
21M
21.00 mi14:30:493:29:429:5911:36
11:36
+0:59
35K
21.75 mi14:38:043:36:579:597:15
9:41
-1:55
23M
23.00 mi14:50:573:49:5010:0012:53
10:17
+0:36
24M
24.00 mi15:00:373:59:309:599:40
9:40
-0:37
40K
24.85 mi15:09:134:08:069:598:36
10:04
+0:24
25.2M
25.20 mi15:12:524:11:459:593:39
10:35
+0:31
Finish
26.22 mi15:22:244:21:179:589:32
9:21
-1:14

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

9:18 /mi

Average Pace

9:58 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:16

47% of race

Time at Steady Pace

1:49:21

42% of race

Time at Slower Pace

29:40

11% of race

Average Pace: 9:58 /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 mi11:30:2329:169:2529:16
9:25
#23963
10K
6.21 mi12:00:1959:129:3229:56
9:38
#24258
15K
9.32 mi12:32:081:31:019:4631:49
10:14
#24739
20K
12.43 mi13:02:242:01:179:4630:16
9:45
#24441
Half
13.11 mi13:08:452:07:389:446:21
9:18
#24357
25K
15.53 mi13:33:102:32:039:4724:25
10:04
#24215
30K
18.64 mi14:04:483:03:419:5131:38
10:11
#23827
20M
20.00 mi14:19:133:18:069:5414:25
10:37
#23744
21M
21.00 mi14:30:493:29:429:5911:36
11:36
#23688
35K
21.75 mi14:38:043:36:579:597:15
9:41
#23588
23M
23.00 mi14:50:573:49:5010:0012:53
10:17
#23450
24M
24.00 mi15:00:373:59:309:599:40
9:40
#23322
40K
24.85 mi15:09:134:08:069:598:36
10:04
#23205
25.2M
25.20 mi15:12:524:11:459:593:39
10:35
#23155
Finish
26.22 mi15:22:244:21:179:589:32
9:21
#23093
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi23963142181421825486(Top 90%)14919(Top 93%)14919(Top 905%)
10K6.21 mi3.10 mi24258-29514372-15414372-15424438(Top 86%)14442(Top 90%)14442(Top 876%)
15K9.32 mi3.11 mi24739-48114595-22314595-22325486(Top 90%)14919(Top 93%)14919(Top 905%)
20K12.43 mi3.11 mi24441+29814438+15714438+15723605(Top 83%)14058(Top 87%)14058(Top 853%)
Half13.11 mi0.68 mi24357+8414396+4214396+4222954(Top 81%)13762(Top 85%)13762(Top 835%)
25K15.53 mi2.42 mi24215+14214324+7214324+7223427(Top 82%)13926(Top 86%)13926(Top 845%)
30K18.64 mi3.11 mi23827+38814123+20114123+20122137(Top 78%)13235(Top 82%)13235(Top 803%)
20M20.00 mi1.36 mi23744+8314065+5814065+5822709(Top 80%)13393(Top 83%)13393(Top 813%)
21M21.00 mi1.00 mi23688+5614025+4014025+4022798(Top 80%)13339(Top 83%)13339(Top 809%)
35K21.75 mi0.75 mi23588+10013968+5713968+5720944(Top 74%)12407(Top 77%)12407(Top 753%)
23M23.00 mi1.25 mi23450+13813885+8313885+8321371(Top 75%)12579(Top 78%)12579(Top 763%)
24M24.00 mi1.00 mi23322+12813811+7413811+7420235(Top 71%)11967(Top 74%)11967(Top 726%)
40K24.85 mi0.85 mi23205+11713727+8413727+8420606(Top 73%)12081(Top 75%)12081(Top 733%)
25.2M25.20 mi0.35 mi23155+5013700+2713700+2719236(Top 68%)11396(Top 71%)11396(Top 692%)
Finish26.22 mi1.02 mi23093+6213661+3913661+3920580(Top 72%)12084(Top 75%)12084(Top 733%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25486

Males

14919

M55-59

14919

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

24438

Males

14442

M55-59

14442

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25486

Males

14919

M55-59

14919

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

23605

Males

14058

M55-59

14058

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

22954

Males

13762

M55-59

13762

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

23427

Males

13926

M55-59

13926

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22137

Males

13235

M55-59

13235

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

22709

Males

13393

M55-59

13393

20M→21M

20.0 - 21.0 mi

Top 80%
×8story building
+106ft-24ft

Overall

22798

Males

13339

M55-59

13339

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

20944

Males

12407

M55-59

12407

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21371

Males

12579

M55-59

12579

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20235

Males

11967

M55-59

11967

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20606

Males

12081

M55-59

12081

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19236

Males

11396

M55-59

11396

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

20580

Males

12084

M55-59

12084

Passing Analysis

Category:
Athletes Passed
2010
Passed By
1140
Net Change
+870
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23963
5K → 10K126421-295#23963#24258
10K → 15K31512-481#24258#24739
15K → 20K31618+298#24739#24441
20K → Half851+84#24441#24357
Half → 25K19351+142#24357#24215
25K → 30K40719+388#24215#23827
30K → 20M11835+83#23827#23744
20M → 21M9640+56#23744#23688
21M → 35K1033+100#23688#23588
35K → 23M16022+138#23588#23450
23M → 24M1324+128#23450#23322
24M → 40K1192+117#23322#23205
40K → 25.2M500+50#23205#23155
25.2M → Finish7412+62#23155#23093
TOTALS20101140+870
📊

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