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BOSTON MARATHON 2025

Jiho Jang

Bib: 30126 M KR

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

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
10:48/mi
33:32
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
11:09/mi
1:08:12
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
10:55/mi
1:42:06
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
11:20/mi
2:17:18
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
10:35/mi
2:24:31
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
11:06/mi
2:51:25
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
12:21/mi
3:29:48
↑ 181↓ 1480.2%
138 ft elev
20M
12:09/mi
3:46:18
↑ 64↓ 500.2%
148 ft elev
21M
13:03/mi
3:59:21
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
11:34/mi
4:08:00
↑ 17↓ 861.7%
156 ft elev
23M
12:26/mi
4:23:34
↑ 23↓ 630.6%
116 ft elev
24M
12:10/mi
4:35:44
↓ 821.3%
34 ft elev
40K· 24.85 mi
12:16/mi
4:46:13
↓ 200.3%
20 ft elev
25.2M
13:00/mi
4:50:42
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:05/mi
5:02:00
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:24:31
Pace11:01 /mi
2nd Half
Distance13.11 mi
Time2:37:29
Pace12:01 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:0533:3210:4833:32
10:48
-
10K
6.21 mi12:28:451:08:1210:5934:40
11:09
+0:21
15K
9.32 mi13:02:391:42:0610:5733:54
10:55
-0:14
20K
12.43 mi13:37:512:17:1811:0335:12
11:20
+0:25
Half
13.11 mi13:45:042:24:3111:017:13
10:35
-0:45
25K
15.53 mi14:11:582:51:2511:0226:54
11:06
+0:31
30K
18.64 mi14:50:213:29:4811:1538:23
12:21
+1:15
20M
20.00 mi15:06:513:46:1811:1916:30
12:09
-0:12
21M
21.00 mi15:19:543:59:2111:2413:03
13:03
+0:54
35K
21.75 mi15:28:334:08:0011:248:39
11:34
-1:29
23M
23.00 mi15:44:074:23:3411:2815:34
12:26
+0:52
24M
24.00 mi15:56:174:35:4411:2912:10
12:10
-0:16
40K
24.85 mi16:06:464:46:1311:3110:29
12:16
+0:06
25.2M
25.20 mi16:11:154:50:4211:324:29
13:00
+0:44
Finish
26.22 mi16:22:335:02:0011:3211:18
11:05
-1:55

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

10:35 /mi

Average Pace

11:32 /mi

Slowest Pace

13:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:31

49% of race

Time at Steady Pace

43:51

15% of race

Time at Slower Pace

1:50:38

37% of race

Average Pace: 11:31 /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 mi11:54:0533:3210:4833:32
10:48
#27275
10K
6.21 mi12:28:451:08:1210:5934:40
11:09
#27280
15K
9.32 mi13:02:391:42:0610:5733:54
10:55
#27005
20K
12.43 mi13:37:512:17:1811:0335:12
11:20
#26845
Half
13.11 mi13:45:042:24:3111:017:13
10:35
#26797
25K
15.53 mi14:11:582:51:2511:0226:54
11:06
#26546
30K
18.64 mi14:50:213:29:4811:1538:23
12:21
#26467
20M
20.00 mi15:06:513:46:1811:1916:30
12:09
#26403
21M
21.00 mi15:19:543:59:2111:2413:03
13:03
#26346
35K
21.75 mi15:28:334:08:0011:248:39
11:34
#26309
23M
23.00 mi15:44:074:23:3411:2815:34
12:26
#26276
24M
24.00 mi15:56:174:35:4411:2912:10
12:10
#26262
40K
24.85 mi16:06:464:46:1311:3110:29
12:16
#26244
25.2M
25.20 mi16:11:154:50:4211:324:29
13:00
#26224
Finish
26.22 mi16:22:335:02:0011:3211:18
11:05
#26225
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi27275157131571326558(Top 94%)15391(Top 96%)15391(Top 273%)
10K6.21 mi3.10 mi27280-515688+2515688+2527256(Top 96%)15669(Top 97%)15669(Top 278%)
15K9.32 mi3.11 mi27005+27515576+11215576+11226558(Top 94%)15391(Top 96%)15391(Top 273%)
20K12.43 mi3.11 mi26845+16015510+6615510+6626429(Top 93%)15310(Top 95%)15310(Top 271%)
Half13.11 mi0.68 mi26797+4815488+2215488+2225915(Top 91%)15072(Top 94%)15072(Top 267%)
25K15.53 mi2.42 mi26546+25115373+11515373+11525342(Top 89%)14793(Top 92%)14793(Top 262%)
30K18.64 mi3.11 mi26467+7915315+5815315+5826007(Top 92%)14995(Top 93%)14995(Top 266%)
20M20.00 mi1.36 mi26403+6415276+3915276+3925461(Top 90%)14667(Top 91%)14667(Top 260%)
21M21.00 mi1.00 mi26346+5715235+4115235+4125103(Top 88%)14427(Top 90%)14427(Top 256%)
35K21.75 mi0.75 mi26309+3715205+3015205+3025193(Top 89%)14439(Top 90%)14439(Top 256%)
23M23.00 mi1.25 mi26276+3315184+2115184+2125715(Top 91%)14689(Top 91%)14689(Top 260%)
24M24.00 mi1.00 mi26262+1415164+2015164+2025874(Top 91%)14734(Top 91%)14734(Top 261%)
40K24.85 mi0.85 mi26244+1815149+1515149+1525333(Top 89%)14436(Top 90%)14436(Top 256%)
25.2M25.20 mi0.35 mi26224+2015145+415145+425051(Top 88%)14279(Top 89%)14279(Top 253%)
Finish26.22 mi1.02 mi26225-115139+615139+625537(Top 90%)14546(Top 90%)14546(Top 258%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

26558

Males

15391

M18-39

15391

5K→10K

3.1 - 6.2 mi

Top 96%
×5story building
+79ft-138ft

Overall

27256

Males

15669

M18-39

15669

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

26558

Males

15391

M18-39

15391

15K→20K

9.3 - 12.4 mi

Top 93%
×5story building
+106ft-86ft

Overall

26429

Males

15310

M18-39

15310

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

25915

Males

15072

M18-39

15072

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

25342

Males

14793

M18-39

14793

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

26007

Males

14995

M18-39

14995

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25461

Males

14667

M18-39

14667

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

25103

Males

14427

M18-39

14427

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

25193

Males

14439

M18-39

14439

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

25715

Males

14689

M18-39

14689

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

25874

Males

14734

M18-39

14734

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

25333

Males

14436

M18-39

14436

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

25051

Males

14279

M18-39

14279

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2story building
+22ft-21ft

Overall

25537

Males

14546

M18-39

14546

Passing Analysis

Category:
Athletes Passed
1429
Passed By
379
Net Change
+1050
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27275
5K → 10K140145-5#27275#27280
10K → 15K28712+275#27280#27005
15K → 20K19333+160#27005#26845
20K → Half480+48#26845#26797
Half → 25K2576+251#26797#26546
25K → 30K13859+79#26546#26467
30K → 20M8117+64#26467#26403
20M → 21M7619+57#26403#26346
21M → 35K447+37#26346#26309
35K → 23M4916+33#26309#26276
23M → 24M3420+14#26276#26262
24M → 40K3315+18#26262#26244
40K → 25.2M255+20#26244#26224
25.2M → Finish2425-1#26224#26225
TOTALS1429379+1050
📊

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