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BOSTON MARATHON 2025

Jae Eun Cho

Bib: 17379 M KR

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 47%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Top 38%
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
7:33/mi
23:26
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:38/mi
47:09
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:42/mi
1:11:04
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:48/mi
1:35:18
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:46/mi
1:40:36
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:56/mi
1:59:50
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:18/mi
2:25:38
↑ 181↓ 1480.2%
138 ft elev
20M
8:30/mi
2:37:11
↑ 64↓ 500.2%
148 ft elev
21M
9:05/mi
2:46:16
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:17/mi
2:52:28
↑ 17↓ 861.7%
156 ft elev
23M
8:50/mi
3:03:31
↑ 23↓ 630.6%
116 ft elev
24M
8:31/mi
3:12:02
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:52/mi
3:19:37
↓ 200.3%
20 ft elev
25.2M
9:08/mi
3:22:46
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:52/mi
3:30:47
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:40:367:40 /mi⚡ faster
2nd Half
1:50:118:24 /mi+9.5%
Positive split — 9.5% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:3223:267:3323:26
7:33
-
10K
6.21 mi11:37:1547:097:3523:43
7:38
+0:05
15K
9.32 mi12:01:101:11:047:3723:55
7:42
+0:04
20K
12.43 mi12:25:241:35:187:4024:14
7:48
+0:06
Half
13.11 mi12:30:421:40:367:405:18
7:46
-0:02
25K
15.53 mi12:49:561:59:507:4319:14
7:56
+0:10
30K
18.64 mi13:15:442:25:387:4925:48
8:18
+0:22
20M
20.00 mi13:27:172:37:117:5211:33
8:30
+0:12
21M
21.00 mi13:36:222:46:167:559:05
9:05
+0:35
35K
21.75 mi13:42:342:52:287:566:12
8:17
-0:48
23M
23.00 mi13:53:373:03:317:5911:03
8:50
+0:33
24M
24.00 mi14:02:083:12:028:008:31
8:31
-0:19
40K
24.85 mi14:09:433:19:378:027:35
8:52
+0:21
25.2M
25.20 mi14:12:523:22:468:033:09
9:08
+0:16
Finish
26.22 mi14:20:533:30:478:038:01
7:52
-1:16

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

7:33 /mi

Average Pace

8:03 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:51

61% of race

Time at Steady Pace

52:04

25% of race

Time at Slower Pace

30:52

15% of race

Average Pace: 8:02 /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 mi11:13:3223:267:3323:26
7:33
#12614
10K
6.21 mi11:37:1547:097:3523:43
7:38
#12906
15K
9.32 mi12:01:101:11:047:3723:55
7:42
#13074
20K
12.43 mi12:25:241:35:187:4024:14
7:48
#13091
Half
13.11 mi12:30:421:40:367:405:18
7:46
#13137
25K
15.53 mi12:49:561:59:507:4319:14
7:56
#13138
30K
18.64 mi13:15:442:25:387:4925:48
8:18
#13192
20M
20.00 mi13:27:172:37:117:5211:33
8:30
#13199
21M
21.00 mi13:36:222:46:167:559:05
9:05
#13230
35K
21.75 mi13:42:342:52:287:566:12
8:17
#13246
23M
23.00 mi13:53:373:03:317:5911:03
8:50
#13360
24M
24.00 mi14:02:083:12:028:008:31
8:31
#13407
40K
24.85 mi14:09:433:19:378:027:35
8:52
#13494
25.2M
25.20 mi14:12:523:22:468:033:09
9:08
#13465
Finish
26.22 mi14:20:533:30:478:038:01
7:52
#13412
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi12614946494641347197119711
10K6.21 mi3.10 mi12906-2929583-1199583-1191330197079707
15K9.32 mi3.11 mi13074-1689603-209603-201347197119711
20K12.43 mi3.11 mi13091-179559+449559+441326395389538
Half13.11 mi0.68 mi13137-469578-199578-191392598699869
25K15.53 mi2.42 mi13138-19544+349544+341334694549454
30K18.64 mi3.11 mi13192-549493+519493+511352893779377
20M20.00 mi1.36 mi13199-79468+259468+251375993329332
21M21.00 mi1.00 mi13230-319456+129456+121397493159315
35K21.75 mi0.75 mi13246-169446+109446+101414993469346
23M23.00 mi1.25 mi13360-1149451-59451-51523097339733
24M24.00 mi1.00 mi13407-479446+59446+51458393969396
40K24.85 mi0.85 mi13494-879463-179463-171554296769676
25.2M25.20 mi0.35 mi13465+299434+299434+291251782458245
Finish26.22 mi1.02 mi13412+539385+499385+491192180028002

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

13471

Males

9711

M55-59

9711

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13301

Males

9707

M55-59

9707

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

13471

Males

9711

M55-59

9711

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

13263

Males

9538

M55-59

9538

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13925

Males

9869

M55-59

9869

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13346

Males

9454

M55-59

9454

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13528

Males

9377

M55-59

9377

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13759

Males

9332

M55-59

9332

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13974

Males

9315

M55-59

9315

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14149

Males

9346

M55-59

9346

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

15230

Males

9733

M55-59

9733

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

14583

Males

9396

M55-59

9396

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15542

Males

9676

M55-59

9676

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12517

Males

8245

M55-59

8245

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11921

Males

8002

M55-59

8002

Passing Analysis

Category:
Athletes Passed
1542
Passed By
2340
Net Change
-798
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12614
5K → 10K175467-292#12614#12906
10K → 15K144312-168#12906#13074
15K → 20K198215-17#13074#13091
20K → Half2066-46#13091#13137
Half → 25K165166-1#13137#13138
25K → 30K237291-54#13138#13192
30K → 20M110117-7#13192#13199
20M → 21M94125-31#13199#13230
21M → 35K5369-16#13230#13246
35K → 23M76190-114#13246#13360
23M → 24M61108-47#13360#13407
24M → 40K54141-87#13407#13494
40K → 25.2M5425+29#13494#13465
25.2M → Finish10148+53#13465#13412
TOTALS15422340-798

Passing Charts

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