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BOSTON MARATHON 2025

Byoungill Jung

Bib: 18163•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M70-74)
#0 / 228
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
8:36/mi
26:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:55/mi
54:26
↑ 79↓ 1380.4%
15K· 9.32 mi
9:15/mi
1:23:11
↑ 67↓ 78
20K· 12.43 mi
9:46/mi
1:53:32
↑ 106↓ 860.1%
Half· 13.11 mi
10:01/mi
2:00:22
↑ 19↓ 370.5%
25K· 15.53 mi
10:15/mi
2:25:13
↑ 66↓ 880.2%
30K· 18.64 mi
11:08/mi
2:59:49
↑ 181↓ 1480.2%
20M
11:15/mi
3:15:06
↑ 64↓ 500.2%
21M
12:48/mi
3:27:54
↑ 106↓ 241.6%
35K· 21.75 mi
10:55/mi
3:36:04
↑ 17↓ 861.7%
23M
11:21/mi
3:50:17
↑ 23↓ 630.6%
24M
11:41/mi
4:01:58
↓ 821.3%
40K· 24.85 mi
11:44/mi
4:12:00
↓ 200.3%
25.2M
11:59/mi
4:16:08
↑ 13↓ 160.2%
Finish· 26.22 mi
10:47/mi
4:27:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:22
Pace9:11 /mi
2nd Half
Distance13.11 mi
Time2:26:45
Pace11:12 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5126:448:3626:44
8:36
-
10K
6.21 mi11:45:3354:268:4627:42
8:55
+0:19
15K
9.32 mi12:14:181:23:118:5528:45
9:15
+0:20
20K
12.43 mi12:44:391:53:329:0830:21
9:46
+0:31
Half
13.11 mi12:51:292:00:229:116:50
10:01
+0:15
25K
15.53 mi13:16:202:25:139:2124:51
10:15
+0:14
30K
18.64 mi13:50:562:59:499:3934:36
11:08
+0:53
20M
20.00 mi14:06:133:15:069:4515:17
11:15
+0:07
21M
21.00 mi14:19:013:27:549:5412:48
12:48
+1:33
35K
21.75 mi14:27:113:36:049:568:10
10:55
-1:53
23M
23.00 mi14:41:243:50:1710:0114:13
11:21
+0:26
24M
24.00 mi14:53:054:01:5810:0511:41
11:41
+0:20
40K
24.85 mi15:03:074:12:0010:0810:02
11:44
+0:03
25.2M
25.20 mi15:07:154:16:0810:104:08
11:59
+0:15
Finish
26.22 mi15:18:144:27:0710:1210:59
10:47
-1:12

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

8:36 /mi

Average Pace

10:12 /mi

Slowest Pace

12:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:13

54% of race

Time at Steady Pace

1:23:15

31% of race

Time at Slower Pace

38:39

14% of race

Average Pace: 10:11 /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 mi11:17:5126:448:3626:44
8:36
#20482
10K
6.21 mi11:45:3354:268:4627:42
8:55
#21222
15K
9.32 mi12:14:181:23:118:5528:45
9:15
#21935
20K
12.43 mi12:44:391:53:329:0830:21
9:46
#22503
Half
13.11 mi12:51:292:00:229:116:50
10:01
#22690
25K
15.53 mi13:16:202:25:139:2124:51
10:15
#22943
30K
18.64 mi13:50:562:59:499:3934:36
11:08
#23234
20M
20.00 mi14:06:133:15:069:4515:17
11:15
#23294
21M
21.00 mi14:19:013:27:549:5412:48
12:48
#23428
35K
21.75 mi14:27:113:36:049:568:10
10:55
#23443
23M
23.00 mi14:41:243:50:1710:0114:13
11:21
#23499
24M
24.00 mi14:53:054:01:5810:0511:41
11:41
#23612
40K
24.85 mi15:03:074:12:0010:0810:02
11:44
#23675
25.2M
25.20 mi15:07:154:16:0810:104:08
11:59
#23680
Finish
26.22 mi15:18:144:27:0710:1210:59
10:47
#23711
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi20482126341263423051(Top 81%)13869(Top 86%)13869(Top 6083%)
10K6.21 mi3.10 mi21222-74012992-35812992-35822005(Top 77%)13347(Top 83%)13347(Top 5854%)
15K9.32 mi3.11 mi21935-71313312-32013312-32023051(Top 81%)13869(Top 86%)13869(Top 6083%)
20K12.43 mi3.11 mi22503-56813576-26413576-26423681(Top 83%)14085(Top 87%)14085(Top 6178%)
Half13.11 mi0.68 mi22690-18713681-10513681-10524851(Top 87%)14590(Top 91%)14590(Top 6399%)
25K15.53 mi2.42 mi22943-25313770-8913770-8923821(Top 84%)14112(Top 88%)14112(Top 6189%)
30K18.64 mi3.11 mi23234-29113860-9013860-9024269(Top 85%)14198(Top 88%)14198(Top 6227%)
20M20.00 mi1.36 mi23294-6013876-1613876-1624084(Top 85%)14023(Top 87%)14023(Top 6150%)
21M21.00 mi1.00 mi23428-13413904-2813904-2824786(Top 87%)14262(Top 89%)14262(Top 6255%)
35K21.75 mi0.75 mi23443-1513901+313901+324024(Top 85%)13890(Top 86%)13890(Top 6092%)
23M23.00 mi1.25 mi23499-5613913-1213913-1223996(Top 84%)13842(Top 86%)13842(Top 6071%)
24M24.00 mi1.00 mi23612-11313945-3213945-3225211(Top 89%)14410(Top 89%)14410(Top 6320%)
40K24.85 mi0.85 mi23675-6313958-1313958-1324528(Top 86%)14031(Top 87%)14031(Top 6154%)
25.2M25.20 mi0.35 mi23680-513955+313955+323192(Top 82%)13379(Top 83%)13379(Top 5868%)
Finish26.22 mi1.02 mi23711-3113963-813963-824901(Top 88%)14226(Top 88%)14226(Top 6239%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21story building
+97ft-345ft

Overall

23051

Males

13869

M70-74

13869

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

22005

Males

13347

M70-74

13347

10K→15K

6.2 - 9.3 mi

Top 81%
×3story building
+67ft-78ft

Overall

23051

Males

13869

M70-74

13869

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

23681

Males

14085

M70-74

14085

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

24851

Males

14590

M70-74

14590

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23821

Males

14112

M70-74

14112

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

24269

Males

14198

M70-74

14198

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

24084

Males

14023

M70-74

14023

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24786

Males

14262

M70-74

14262

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

24024

Males

13890

M70-74

13890

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

23996

Males

13842

M70-74

13842

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

25211

Males

14410

M70-74

14410

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24528

Males

14031

M70-74

14031

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23192

Males

13379

M70-74

13379

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

24901

Males

14226

M70-74

14226

Passing Analysis

Category:
Athletes Passed
616
Passed By
3845
Net Change
-3229
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20482
5K → 10K65805-740#20482#21222
10K → 15K57770-713#21222#21935
15K → 20K62630-568#21935#22503
20K → Half7194-187#22503#22690
Half → 25K73326-253#22690#22943
25K → 30K80371-291#22943#23234
30K → 20M60120-60#23234#23294
20M → 21M36170-134#23294#23428
21M → 35K4257-15#23428#23443
35K → 23M52108-56#23443#23499
23M → 24M22135-113#23499#23612
24M → 40K2184-63#23612#23675
40K → 25.2M1217-5#23675#23680
25.2M → Finish2758-31#23680#23711
TOTALS6163845-3229
📊

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