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BOSTON MARATHON 2025

Dongil Kim

Bib: 22423•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
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
8:08/mi
25:17
↑ 97↓ 3451.5%
10K· 6.21 mi
8:28/mi
51:36
↑ 79↓ 1380.4%
15K· 9.32 mi
8:36/mi
1:18:19
↑ 67↓ 78
20K· 12.43 mi
8:49/mi
1:45:41
↑ 106↓ 860.1%
Half· 13.11 mi
8:30/mi
1:51:29
↑ 19↓ 370.5%
25K· 15.53 mi
9:00/mi
2:13:18
↑ 66↓ 880.2%
30K· 18.64 mi
9:19/mi
2:42:14
↑ 181↓ 1480.2%
20M
9:45/mi
2:55:29
↑ 64↓ 500.2%
21M
11:13/mi
3:06:42
↑ 106↓ 241.6%
35K· 21.75 mi
9:01/mi
3:13:27
↑ 17↓ 861.7%
23M
11:12/mi
3:27:28
↑ 23↓ 630.6%
24M
9:00/mi
3:36:28
↓ 821.3%
40K· 24.85 mi
9:31/mi
3:44:36
↓ 200.3%
25.2M
11:24/mi
3:48:32
↑ 13↓ 160.2%
Finish· 26.22 mi
9:21/mi
3:58:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:29
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time2:06:35
Pace9:39 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1125:178:0825:17
8:08
-
10K
6.21 mi11:46:3051:368:1826:19
8:28
+0:20
15K
9.32 mi12:13:131:18:198:2426:43
8:36
+0:08
20K
12.43 mi12:40:351:45:418:3027:22
8:49
+0:13
Half
13.11 mi12:46:231:51:298:305:48
8:30
-0:19
25K
15.53 mi13:08:122:13:188:3521:49
9:00
+0:30
30K
18.64 mi13:37:082:42:148:4228:56
9:19
+0:19
20M
20.00 mi13:50:232:55:298:4613:15
9:45
+0:26
21M
21.00 mi14:01:363:06:428:5311:13
11:13
+1:28
35K
21.75 mi14:08:213:13:278:546:45
9:01
-2:12
23M
23.00 mi14:22:223:27:289:0114:01
11:12
+2:11
24M
24.00 mi14:31:223:36:289:019:00
9:00
-2:12
40K
24.85 mi14:39:303:44:369:028:08
9:31
+0:31
25.2M
25.20 mi14:43:263:48:329:043:56
11:24
+1:53
Finish
26.22 mi14:52:583:58:049:059:32
9:21
-2:03

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

8:08 /mi

Average Pace

9:05 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

57:24

24% of race

Time at Steady Pace

2:18:15

58% of race

Time at Slower Pace

42:25

18% of race

Average Pace: 9:05 /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 mi11:20:1125:178:0825:17
8:08
#17631
10K
6.21 mi11:46:3051:368:1826:19
8:28
#18635
15K
9.32 mi12:13:131:18:198:2426:43
8:36
#19035
20K
12.43 mi12:40:351:45:418:3027:22
8:49
#19285
Half
13.11 mi12:46:231:51:298:305:48
8:30
#19281
25K
15.53 mi13:08:122:13:188:3521:49
9:00
#19401
30K
18.64 mi13:37:082:42:148:4228:56
9:19
#19336
20M
20.00 mi13:50:232:55:298:4613:15
9:45
#19432
21M
21.00 mi14:01:363:06:428:5311:13
11:13
#19658
35K
21.75 mi14:08:213:13:278:546:45
9:01
#19615
23M
23.00 mi14:22:223:27:289:0114:01
11:12
#20011
24M
24.00 mi14:31:223:36:289:019:00
9:00
#19889
40K
24.85 mi14:39:303:44:369:028:08
9:31
#19845
25.2M
25.20 mi14:43:263:48:329:043:56
11:24
#19897
Finish
26.22 mi14:52:583:58:049:059:32
9:21
#19948
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17631114681146819914(Top 70%)12462(Top 77%)12462(Top 990%)
10K6.21 mi3.10 mi18635-100411882-41411882-41419622(Top 69%)12316(Top 76%)12316(Top 978%)
15K9.32 mi3.11 mi19035-40012045-16312045-16319914(Top 70%)12462(Top 77%)12462(Top 990%)
20K12.43 mi3.11 mi19285-25012159-11412159-11419970(Top 70%)12451(Top 77%)12451(Top 989%)
Half13.11 mi0.68 mi19281+412153+612153+619183(Top 68%)12131(Top 75%)12131(Top 964%)
25K15.53 mi2.42 mi19401-12012200-4712200-4719879(Top 70%)12357(Top 77%)12357(Top 981%)
30K18.64 mi3.11 mi19336+6512130+7012130+7019166(Top 67%)11910(Top 74%)11910(Top 946%)
20M20.00 mi1.36 mi19432-9612156-2612156-2620104(Top 71%)12197(Top 76%)12197(Top 969%)
21M21.00 mi1.00 mi19658-22612224-6812224-6821936(Top 77%)12940(Top 80%)12940(Top 1028%)
35K21.75 mi0.75 mi19615+4312191+3312191+3318331(Top 65%)11201(Top 70%)11201(Top 890%)
23M23.00 mi1.25 mi20011-39612334-14312334-14323649(Top 83%)13666(Top 85%)13666(Top 1085%)
24M24.00 mi1.00 mi19889+12212245+8912245+8917362(Top 61%)10639(Top 66%)10639(Top 845%)
40K24.85 mi0.85 mi19845+4412206+3912206+3918746(Top 66%)11203(Top 70%)11203(Top 890%)
25.2M25.20 mi0.35 mi19897-5212232-2612232-2621772(Top 77%)12669(Top 79%)12669(Top 1006%)
Finish26.22 mi1.02 mi19948-5112237-512237-520605(Top 73%)12106(Top 75%)12106(Top 962%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

19914

Males

12462

M60-64

12462

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19622

Males

12316

M60-64

12316

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

19914

Males

12462

M60-64

12462

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19970

Males

12451

M60-64

12451

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19183

Males

12131

M60-64

12131

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

19879

Males

12357

M60-64

12357

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

19166

Males

11910

M60-64

11910

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20104

Males

12197

M60-64

12197

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

21936

Males

12940

M60-64

12940

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

18331

Males

11201

M60-64

11201

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

23649

Males

13666

M60-64

13666

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

17362

Males

10639

M60-64

10639

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18746

Males

11203

M60-64

11203

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21772

Males

12669

M60-64

12669

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20605

Males

12106

M60-64

12106

Passing Analysis

Category:
Athletes Passed
1161
Passed By
3478
Net Change
-2317
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17631
5K → 10K471051-1004#17631#18635
10K → 15K88488-400#18635#19035
15K → 20K121371-250#19035#19285
20K → Half3935+4#19285#19281
Half → 25K132252-120#19281#19401
25K → 30K243178+65#19401#19336
30K → 20M73169-96#19336#19432
20M → 21M54280-226#19432#19658
21M → 35K6623+43#19658#19615
35K → 23M26422-396#19615#20011
23M → 24M13715+122#20011#19889
24M → 40K7733+44#19889#19845
40K → 25.2M1264-52#19845#19897
25.2M → Finish4697-51#19897#19948
TOTALS11613478-2317
📊

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