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BOSTON MARATHON 2025

Bang Soo Lee

Bib: 19184•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 46%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 49%
Division (M65-69)
#0 / 639
Top 6%
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
7:55/mi
24:36
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
48:43
↑ 79↓ 1380.4%
15K· 9.32 mi
7:42/mi
1:12:39
↑ 67↓ 78
20K· 12.43 mi
7:52/mi
1:37:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:42:19
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
2:01:31
↑ 66↓ 880.2%
30K· 18.64 mi
8:17/mi
2:27:16
↑ 181↓ 1480.2%
20M
8:25/mi
2:38:42
↑ 64↓ 500.2%
21M
9:06/mi
2:47:48
↑ 106↓ 241.6%
35K· 21.75 mi
7:49/mi
2:53:39
↑ 17↓ 861.7%
23M
7:54/mi
3:03:33
↑ 23↓ 630.6%
24M
7:58/mi
3:11:31
↓ 821.3%
40K· 24.85 mi
7:45/mi
3:18:09
↓ 200.3%
25.2M
8:27/mi
3:21:04
↑ 13↓ 160.2%
Finish· 26.22 mi
7:55/mi
3:29:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:19
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time1:46:49
Pace8:09 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4424:367:5524:36
7:55
-
10K
6.21 mi11:39:5148:437:5024:07
7:46
-0:09
15K
9.32 mi12:03:471:12:397:4823:56
7:42
-0:04
20K
12.43 mi12:28:121:37:047:4924:25
7:52
+0:10
Half
13.11 mi12:33:271:42:197:485:15
7:42
-0:10
25K
15.53 mi12:52:392:01:317:4919:12
7:55
+0:13
30K
18.64 mi13:18:242:27:167:5425:45
8:17
+0:22
20M
20.00 mi13:29:502:38:427:5611:26
8:25
+0:08
21M
21.00 mi13:38:562:47:487:599:06
9:06
+0:41
35K
21.75 mi13:44:472:53:397:595:51
7:49
-1:17
23M
23.00 mi13:54:413:03:337:599:54
7:54
+0:05
24M
24.00 mi14:02:393:11:317:597:58
7:58
+0:04
40K
24.85 mi14:09:173:18:097:586:38
7:45
-0:13
25.2M
25.20 mi14:12:123:21:047:592:55
8:27
+0:42
Finish
26.22 mi14:20:163:29:087:598:04
7:55
-0:32

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

7:42 /mi

Average Pace

7:59 /mi

Slowest Pace

9:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:02

96% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

9:06

4% of race

Average Pace: 7:59 /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 mi11:15:4424:367:5524:36
7:55
#15853
10K
6.21 mi11:39:5148:437:5024:07
7:46
#15145
15K
9.32 mi12:03:471:12:397:4823:56
7:42
#14571
20K
12.43 mi12:28:121:37:047:4924:25
7:52
#14346
Half
13.11 mi12:33:271:42:197:485:15
7:42
#14278
25K
15.53 mi12:52:392:01:317:4919:12
7:55
#14062
30K
18.64 mi13:18:242:27:167:5425:45
8:17
#13877
20M
20.00 mi13:29:502:38:427:5611:26
8:25
#13782
21M
21.00 mi13:38:562:47:487:599:06
9:06
#13788
35K
21.75 mi13:44:472:53:397:595:51
7:49
#13656
23M
23.00 mi13:54:413:03:337:599:54
7:54
#13372
24M
24.00 mi14:02:393:11:317:597:58
7:58
#13241
40K
24.85 mi14:09:173:18:097:586:38
7:45
#13062
25.2M
25.20 mi14:12:123:21:047:592:55
8:27
#12993
Finish
26.22 mi14:20:163:29:087:598:04
7:55
#12954
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi15853107481074813520(Top 48%)9734(Top 60%)9734(Top 1523%)
10K6.21 mi3.10 mi15145+70810465+28310465+28314444(Top 51%)10183(Top 63%)10183(Top 1594%)
15K9.32 mi3.11 mi14571+57410229+23610229+23613520(Top 48%)9734(Top 60%)9734(Top 1523%)
20K12.43 mi3.11 mi14346+22510101+12810101+12813744(Top 48%)9752(Top 61%)9752(Top 1526%)
Half13.11 mi0.68 mi14278+6810068+3310068+3313299(Top 47%)9599(Top 60%)9599(Top 1502%)
25K15.53 mi2.42 mi14062+2169939+1299939+12913232(Top 47%)9406(Top 58%)9406(Top 1472%)
30K18.64 mi3.11 mi13877+1859801+1389801+13813410(Top 47%)9314(Top 58%)9314(Top 1458%)
20M20.00 mi1.36 mi13782+959727+749727+7413219(Top 47%)9085(Top 56%)9085(Top 1422%)
21M21.00 mi1.00 mi13788-69696+319696+3114069(Top 50%)9358(Top 58%)9358(Top 1464%)
35K21.75 mi0.75 mi13656+1329623+739623+7310978(Top 39%)7861(Top 49%)7861(Top 1230%)
23M23.00 mi1.25 mi13372+2849455+1689455+1689346(Top 33%)6903(Top 43%)6903(Top 1080%)
24M24.00 mi1.00 mi13241+1319371+849371+8410995(Top 39%)7670(Top 48%)7670(Top 1200%)
40K24.85 mi0.85 mi13062+1799262+1099262+1098482(Top 30%)6256(Top 39%)6256(Top 979%)
25.2M25.20 mi0.35 mi12993+699224+389224+388558(Top 30%)6243(Top 39%)6243(Top 977%)
Finish26.22 mi1.02 mi12954+399187+379187+3712273(Top 43%)8176(Top 51%)8176(Top 1279%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

13520

Males

9734

M65-69

9734

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

14444

Males

10183

M65-69

10183

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

13520

Males

9734

M65-69

9734

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

13744

Males

9752

M65-69

9752

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

13299

Males

9599

M65-69

9599

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13232

Males

9406

M65-69

9406

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13410

Males

9314

M65-69

9314

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13219

Males

9085

M65-69

9085

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

14069

Males

9358

M65-69

9358

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

10978

Males

7861

M65-69

7861

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

9346

Males

6903

M65-69

6903

23M→24M

23.0 - 24.0 mi

Top 39%
×6story building
+12ft-82ft

Overall

10995

Males

7670

M65-69

7670

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8482

Males

6256

M65-69

6256

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8558

Males

6243

M65-69

6243

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

12273

Males

8176

M65-69

8176

Passing Analysis

Category:
Athletes Passed
3583
Passed By
684
Net Change
+2899
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15853
5K → 10K79688+708#15853#15145
10K → 15K59925+574#15145#14571
15K → 20K32095+225#14571#14346
20K → Half757+68#14346#14278
Half → 25K26953+216#14278#14062
25K → 30K338153+185#14062#13877
30K → 20M16065+95#13877#13782
20M → 21M105111-6#13782#13788
21M → 35K1342+132#13788#13656
35K → 23M2884+284#13656#13372
23M → 24M15120+131#13372#13241
24M → 40K1878+179#13241#13062
40K → 25.2M723+69#13062#12993
25.2M → Finish8950+39#12993#12954
TOTALS3583684+2899
📊

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