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BOSTON MARATHON 2025

Alfredo Korzenik

Bib: 20221•M

CA

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
Top 27%
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
7:57/mi
24:41
↑ 97↓ 3451.5%
10K· 6.21 mi
7:57/mi
49:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:13:33
↑ 67↓ 78
20K· 12.43 mi
8:02/mi
1:38:29
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:43:52
↑ 19↓ 370.5%
25K· 15.53 mi
8:09/mi
2:03:37
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:30:11
↑ 181↓ 1480.2%
20M
8:48/mi
2:42:08
↑ 64↓ 500.2%
21M
9:04/mi
2:51:12
↑ 106↓ 241.6%
35K· 21.75 mi
8:49/mi
2:57:48
↑ 17↓ 861.7%
23M
9:05/mi
3:09:11
↑ 23↓ 630.6%
24M
8:57/mi
3:18:08
↓ 821.3%
40K· 24.85 mi
9:07/mi
3:25:56
↓ 200.3%
25.2M
9:54/mi
3:29:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:18/mi
3:37:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:52
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:53:56
Pace8:41 /mi
📊Positive Split: 9.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2024:417:5724:41
7:57
-
10K
6.21 mi11:41:0149:227:5724:41
7:57
0:00
15K
9.32 mi12:05:121:13:337:5324:11
7:47
-0:10
20K
12.43 mi12:30:081:38:297:5524:56
8:02
+0:15
Half
13.11 mi12:35:311:43:527:555:23
7:53
-0:09
25K
15.53 mi12:55:162:03:377:5719:45
8:09
+0:16
30K
18.64 mi13:21:502:30:118:0326:34
8:33
+0:24
20M
20.00 mi13:33:472:42:088:0611:57
8:48
+0:15
21M
21.00 mi13:42:512:51:128:099:04
9:04
+0:16
35K
21.75 mi13:49:272:57:488:116:36
8:49
-0:15
23M
23.00 mi14:00:503:09:118:1411:23
9:05
+0:16
24M
24.00 mi14:09:473:18:088:158:57
8:57
-0:08
40K
24.85 mi14:17:353:25:568:177:48
9:07
+0:10
25.2M
25.20 mi14:21:003:29:218:183:25
9:54
+0:47
Finish
26.22 mi14:29:273:37:488:198:27
8:18
-1:36

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

7:47 /mi

Average Pace

8:19 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:37

57% of race

Time at Steady Pace

53:34

25% of race

Time at Slower Pace

40:37

19% of race

Average Pace: 8:18 /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 mi11:16:2024:417:5724:41
7:57
#16131
10K
6.21 mi11:41:0149:227:5724:41
7:57
#16057
15K
9.32 mi12:05:121:13:337:5324:11
7:47
#15424
20K
12.43 mi12:30:081:38:297:5524:56
8:02
#15318
Half
13.11 mi12:35:311:43:527:555:23
7:53
#15300
25K
15.53 mi12:55:162:03:377:5719:45
8:09
#15224
30K
18.64 mi13:21:502:30:118:0326:34
8:33
#15183
20M
20.00 mi13:33:472:42:088:0611:57
8:48
#15190
21M
21.00 mi13:42:512:51:128:099:04
9:04
#15047
35K
21.75 mi13:49:272:57:488:116:36
8:49
#15119
23M
23.00 mi14:00:503:09:118:1411:23
9:05
#15228
24M
24.00 mi14:09:473:18:088:158:57
8:57
#15289
40K
24.85 mi14:17:353:25:568:177:48
9:07
#15342
25.2M
25.20 mi14:21:003:29:218:183:25
9:54
#15361
Finish
26.22 mi14:29:273:37:488:198:27
8:18
#15334
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi16131108641086414224(Top 50%)10028(Top 62%)10028(Top 797%)
10K6.21 mi3.10 mi16057+7410835+2910835+2916020(Top 56%)10843(Top 67%)10843(Top 861%)
15K9.32 mi3.11 mi15424+63310580+25510580+25514224(Top 50%)10028(Top 62%)10028(Top 797%)
20K12.43 mi3.11 mi15318+10610513+6710513+6715110(Top 53%)10365(Top 64%)10365(Top 823%)
Half13.11 mi0.68 mi15300+1810504+910504+914965(Top 53%)10327(Top 64%)10327(Top 820%)
25K15.53 mi2.42 mi15224+7610445+5910445+5914939(Top 53%)10190(Top 63%)10190(Top 809%)
30K18.64 mi3.11 mi15183+4110373+7210373+7215074(Top 53%)10092(Top 63%)10092(Top 802%)
20M20.00 mi1.36 mi15190-710341+3210341+3215607(Top 55%)10199(Top 63%)10199(Top 810%)
21M21.00 mi1.00 mi15047+14310254+8710254+8713886(Top 49%)9283(Top 58%)9283(Top 737%)
35K21.75 mi0.75 mi15119-7210269-1510269-1517330(Top 61%)10734(Top 67%)10734(Top 853%)
23M23.00 mi1.25 mi15228-10910275-610275-616754(Top 59%)10403(Top 65%)10403(Top 826%)
24M24.00 mi1.00 mi15289-6110274+110274+117084(Top 60%)10492(Top 65%)10492(Top 833%)
40K24.85 mi0.85 mi15342-5310260+1410260+1416945(Top 60%)10352(Top 64%)10352(Top 822%)
25.2M25.20 mi0.35 mi15361-1910261-110261-116548(Top 58%)10141(Top 63%)10141(Top 805%)
Finish26.22 mi1.02 mi15334+2710227+3410227+3414848(Top 52%)9418(Top 58%)9418(Top 748%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14224

Males

10028

M60-64

10028

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

16020

Males

10843

M60-64

10843

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14224

Males

10028

M60-64

10028

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

15110

Males

10365

M60-64

10365

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14965

Males

10327

M60-64

10327

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

14939

Males

10190

M60-64

10190

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

15074

Males

10092

M60-64

10092

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15607

Males

10199

M60-64

10199

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13886

Males

9283

M60-64

9283

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

17330

Males

10734

M60-64

10734

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16754

Males

10403

M60-64

10403

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

17084

Males

10492

M60-64

10492

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16945

Males

10352

M60-64

10352

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16548

Males

10141

M60-64

10141

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

14848

Males

9418

M60-64

9418

Passing Analysis

Category:
Athletes Passed
2376
Passed By
1579
Net Change
+797
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16131
5K → 10K343269+74#16131#16057
10K → 15K65522+633#16057#15424
15K → 20K248142+106#15424#15318
20K → Half4830+18#15318#15300
Half → 25K206130+76#15300#15224
25K → 30K259218+41#15224#15183
30K → 20M112119-7#15183#15190
20M → 21M18845+143#15190#15047
21M → 35K39111-72#15047#15119
35K → 23M79188-109#15119#15228
23M → 24M53114-61#15228#15289
24M → 40K60113-53#15289#15342
40K → 25.2M1938-19#15342#15361
25.2M → Finish6740+27#15361#15334
TOTALS23761579+797
📊

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