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BOSTON MARATHON 2025

Youngjoo Jeon

Bib: 21343•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
8:18/mi
25:46
↑ 97↓ 3451.5%
10K· 6.21 mi
9:36/mi
55:35
↑ 79↓ 1380.4%
15K· 9.32 mi
8:56/mi
1:23:19
↑ 67↓ 78
20K· 12.43 mi
9:25/mi
1:52:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:45/mi
1:58:31
↑ 19↓ 370.5%
25K· 15.53 mi
10:57/mi
2:25:04
↑ 66↓ 880.2%
30K· 18.64 mi
11:02/mi
2:59:22
↑ 181↓ 1480.2%
20M
11:49/mi
3:15:26
↑ 64↓ 500.2%
21M
12:58/mi
3:28:24
↑ 106↓ 241.6%
35K· 21.75 mi
10:31/mi
3:36:16
↑ 17↓ 861.7%
23M
11:09/mi
3:50:14
↑ 23↓ 630.6%
24M
11:52/mi
4:02:06
↓ 821.3%
40K· 24.85 mi
11:42/mi
4:12:06
↓ 200.3%
25.2M
12:51/mi
4:16:32
↑ 13↓ 160.2%
Finish· 26.22 mi
10:42/mi
4:27:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:31
Pace9:02 /mi
2nd Half
Distance13.11 mi
Time2:28:55
Pace11:22 /mi
📊Positive Split: 25.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:2025:468:1825:46
8:18
-
10K
6.21 mi11:49:0955:358:5729:49
9:36
+1:18
15K
9.32 mi12:16:531:23:198:5627:44
8:56
-0:40
20K
12.43 mi12:46:071:52:339:0329:14
9:25
+0:29
Half
13.11 mi12:52:051:58:319:025:58
8:45
-0:40
25K
15.53 mi13:18:382:25:049:2026:33
10:57
+2:12
30K
18.64 mi13:52:562:59:229:3734:18
11:02
+0:05
20M
20.00 mi14:09:003:15:269:4616:04
11:49
+0:47
21M
21.00 mi14:21:583:28:249:5512:58
12:58
+1:09
35K
21.75 mi14:29:503:36:169:577:52
10:31
-2:27
23M
23.00 mi14:43:483:50:1410:0113:58
11:09
+0:38
24M
24.00 mi14:55:404:02:0610:0511:52
11:52
+0:43
40K
24.85 mi15:05:404:12:0610:0910:00
11:42
-0:10
25.2M
25.20 mi15:10:064:16:3210:114:26
12:51
+1:09
Finish
26.22 mi15:21:004:27:2610:1210:54
10:42
-2:09

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

8:18 /mi

Average Pace

10:12 /mi

Slowest Pace

12:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:31

44% of race

Time at Steady Pace

1:33:35

35% of race

Time at Slower Pace

55:20

21% of race

Average Pace: 10:12 /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 mi11:19:2025:468:1825:46
8:18
#18666
10K
6.21 mi11:49:0955:358:5729:49
9:36
#22178
15K
9.32 mi12:16:531:23:198:5627:44
8:56
#22017
20K
12.43 mi12:46:071:52:339:0329:14
9:25
#22185
Half
13.11 mi12:52:051:58:319:025:58
8:45
#22108
25K
15.53 mi13:18:382:25:049:2026:33
10:57
#22917
30K
18.64 mi13:52:562:59:229:3734:18
11:02
#23158
20M
20.00 mi14:09:003:15:269:4616:04
11:49
#23336
21M
21.00 mi14:21:583:28:249:5512:58
12:58
#23508
35K
21.75 mi14:29:503:36:169:577:52
10:31
#23477
23M
23.00 mi14:43:483:50:1410:0113:58
11:09
#23495
24M
24.00 mi14:55:404:02:0610:0511:52
11:52
#23631
40K
24.85 mi15:05:404:12:0610:0910:00
11:42
#23686
25.2M
25.20 mi15:10:064:16:3210:114:26
12:51
#23711
Finish
26.22 mi15:21:004:27:2610:1210:54
10:42
#23753
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18666118981189821686(Top 76%)13261(Top 82%)13261(Top 1053%)
10K6.21 mi3.10 mi22178-351213405-150713405-150724352(Top 86%)14401(Top 89%)14401(Top 1144%)
15K9.32 mi3.11 mi22017+16113346+5913346+5921686(Top 76%)13261(Top 82%)13261(Top 1053%)
20K12.43 mi3.11 mi22185-16813428-8213428-8222603(Top 80%)13624(Top 85%)13624(Top 1082%)
Half13.11 mi0.68 mi22108+7713394+3413394+3420628(Top 73%)12754(Top 79%)12754(Top 1013%)
25K15.53 mi2.42 mi22917-80913759-36513759-36525132(Top 88%)14704(Top 91%)14704(Top 1168%)
30K18.64 mi3.11 mi23158-24113820-6113820-6124070(Top 85%)14108(Top 88%)14108(Top 1121%)
20M20.00 mi1.36 mi23336-17813893-7313893-7325011(Top 88%)14471(Top 90%)14471(Top 1149%)
21M21.00 mi1.00 mi23508-17213945-5213945-5224998(Top 88%)14365(Top 89%)14365(Top 1141%)
35K21.75 mi0.75 mi23477+3113914+3113914+3123207(Top 82%)13493(Top 84%)13493(Top 1072%)
23M23.00 mi1.25 mi23495-1813911+313911+323565(Top 83%)13622(Top 85%)13622(Top 1082%)
24M24.00 mi1.00 mi23631-13613954-4313954-4325502(Top 90%)14559(Top 90%)14559(Top 1156%)
40K24.85 mi0.85 mi23686-5513962-813962-824474(Top 86%)14003(Top 87%)14003(Top 1112%)
25.2M25.20 mi0.35 mi23711-2513972-1013972-1024816(Top 87%)14165(Top 88%)14165(Top 1125%)
Finish26.22 mi1.02 mi23753-4213984-1213984-1224720(Top 87%)14135(Top 88%)14135(Top 1123%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21686

Males

13261

M60-64

13261

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

24352

Males

14401

M60-64

14401

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21686

Males

13261

M60-64

13261

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

22603

Males

13624

M60-64

13624

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

20628

Males

12754

M60-64

12754

Half→25K

13.1 - 15.5 mi

Top 88%
×4story building
+66ft-88ft

Overall

25132

Males

14704

M60-64

14704

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

24070

Males

14108

M60-64

14108

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

25011

Males

14471

M60-64

14471

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

24998

Males

14365

M60-64

14365

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

23207

Males

13493

M60-64

13493

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

23565

Males

13622

M60-64

13622

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

25502

Males

14559

M60-64

14559

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24474

Males

14003

M60-64

14003

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24816

Males

14165

M60-64

14165

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

24720

Males

14135

M60-64

14135

Passing Analysis

Category:
Athletes Passed
874
Passed By
5961
Net Change
-5087
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18666
5K → 10K33515-3512#18666#22178
10K → 15K273112+161#22178#22017
15K → 20K136304-168#22017#22185
20K → Half847+77#22185#22108
Half → 25K15824-809#22108#22917
25K → 30K95336-241#22917#23158
30K → 20M37215-178#23158#23336
20M → 21M30202-172#23336#23508
21M → 35K6029+31#23508#23477
35K → 23M6886-18#23477#23495
23M → 24M15151-136#23495#23631
24M → 40K2984-55#23631#23686
40K → 25.2M732-25#23686#23711
25.2M → Finish2264-42#23711#23753
TOTALS8745961-5087
📊

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