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BOSTON MARATHON 2025

Erik Strzempko

Bib: 26238•M

RI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
8:39/mi
26:54
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
53:24
↑ 79↓ 1380.4%
15K· 9.32 mi
8:27/mi
1:19:40
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:46:22
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:52:05
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
2:12:56
↑ 66↓ 880.2%
30K· 18.64 mi
8:28/mi
2:39:15
↑ 181↓ 1480.2%
20M
8:20/mi
2:50:35
↑ 64↓ 500.2%
21M
8:52/mi
2:59:27
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
3:05:41
↑ 17↓ 861.7%
23M
8:47/mi
3:16:41
↑ 23↓ 630.6%
24M
8:47/mi
3:25:28
↓ 821.3%
40K· 24.85 mi
9:30/mi
3:33:35
↓ 200.3%
25.2M
10:15/mi
3:37:07
↑ 13↓ 160.2%
Finish· 26.22 mi
8:49/mi
3:46:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:05
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time1:54:01
Pace8:42 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:2926:548:3926:54
8:39
-
10K
6.21 mi12:08:5953:248:3626:30
8:32
-0:07
15K
9.32 mi12:35:151:19:408:3326:16
8:27
-0:05
20K
12.43 mi13:01:571:46:228:3426:42
8:36
+0:09
Half
13.11 mi13:07:401:52:058:335:43
8:23
-0:13
25K
15.53 mi13:28:312:12:568:3320:51
8:36
+0:13
30K
18.64 mi13:54:502:39:158:3326:19
8:28
-0:08
20M
20.00 mi14:06:102:50:358:3211:20
8:20
-0:08
21M
21.00 mi14:15:022:59:278:338:52
8:52
+0:32
35K
21.75 mi14:21:163:05:418:326:14
8:20
-0:32
23M
23.00 mi14:32:163:16:418:3311:00
8:47
+0:27
24M
24.00 mi14:41:033:25:288:348:47
8:47
0:00
40K
24.85 mi14:49:103:33:358:368:07
9:30
+0:43
25.2M
25.20 mi14:52:423:37:078:373:32
10:15
+0:45
Finish
26.22 mi15:01:413:46:068:388:59
8:49
-1:26

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

8:20 /mi

Average Pace

8:38 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

17:34

8% of race

Time at Steady Pace

3:08:01

83% of race

Time at Slower Pace

20:31

9% of race

Average Pace: 8:37 /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 mi11:42:2926:548:3926:54
8:39
#20777
10K
6.21 mi12:08:5953:248:3626:30
8:32
#20360
15K
9.32 mi12:35:151:19:408:3326:16
8:27
#19962
20K
12.43 mi13:01:571:46:228:3426:42
8:36
#19639
Half
13.11 mi13:07:401:52:058:335:43
8:23
#19575
25K
15.53 mi13:28:312:12:568:3320:51
8:36
#19241
30K
18.64 mi13:54:502:39:158:3326:19
8:28
#18399
20M
20.00 mi14:06:102:50:358:3211:20
8:20
#17953
21M
21.00 mi14:15:022:59:278:338:52
8:52
#17662
35K
21.75 mi14:21:163:05:418:326:14
8:20
#17528
23M
23.00 mi14:32:163:16:418:3311:00
8:47
#17351
24M
24.00 mi14:41:033:25:288:348:47
8:47
#17295
40K
24.85 mi14:49:103:33:358:368:07
9:30
#17358
25.2M
25.20 mi14:52:423:37:078:373:32
10:15
#17391
Finish
26.22 mi15:01:413:46:068:388:59
8:49
#17401
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi20777127571275719044(Top 67%)12063(Top 75%)12063(Top 604%)
10K6.21 mi3.10 mi20360+41712614+14312614+14319949(Top 70%)12453(Top 77%)12453(Top 624%)
15K9.32 mi3.11 mi19962+39812459+15512459+15519044(Top 67%)12063(Top 75%)12063(Top 604%)
20K12.43 mi3.11 mi19639+32312314+14512314+14518794(Top 66%)11942(Top 74%)11942(Top 598%)
Half13.11 mi0.68 mi19575+6412284+3012284+3018428(Top 65%)11790(Top 73%)11790(Top 591%)
25K15.53 mi2.42 mi19241+33412135+14912135+14917790(Top 63%)11435(Top 71%)11435(Top 573%)
30K18.64 mi3.11 mi18399+84211742+39311742+39314582(Top 51%)9876(Top 61%)9876(Top 495%)
20M20.00 mi1.36 mi17953+44611507+23511507+23512759(Top 45%)8901(Top 55%)8901(Top 446%)
21M21.00 mi1.00 mi17662+29111361+14611361+14612710(Top 45%)8706(Top 54%)8706(Top 436%)
35K21.75 mi0.75 mi17528+13411278+8311278+8314471(Top 51%)9503(Top 59%)9503(Top 476%)
23M23.00 mi1.25 mi17351+17711161+11711161+11715028(Top 53%)9643(Top 60%)9643(Top 483%)
24M24.00 mi1.00 mi17295+5611114+4711114+4716208(Top 57%)10123(Top 63%)10123(Top 507%)
40K24.85 mi0.85 mi17358-6311120-611120-618669(Top 66%)11154(Top 69%)11154(Top 559%)
25.2M25.20 mi0.35 mi17391-33111201112018026(Top 63%)10826(Top 67%)10826(Top 542%)
Finish26.22 mi1.02 mi17401-1011094+2611094+2618117(Top 64%)10924(Top 68%)10924(Top 547%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

19044

Males

12063

M50-54

12063

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19949

Males

12453

M50-54

12453

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

19044

Males

12063

M50-54

12063

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18794

Males

11942

M50-54

11942

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18428

Males

11790

M50-54

11790

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17790

Males

11435

M50-54

11435

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

14582

Males

9876

M50-54

9876

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12759

Males

8901

M50-54

8901

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12710

Males

8706

M50-54

8706

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

14471

Males

9503

M50-54

9503

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

15028

Males

9643

M50-54

9643

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

16208

Males

10123

M50-54

10123

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18669

Males

11154

M50-54

11154

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

18026

Males

10826

M50-54

10826

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18117

Males

10924

M50-54

10924

Passing Analysis

Category:
Athletes Passed
3991
Passed By
615
Net Change
+3376
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20777
5K → 10K551134+417#20777#20360
10K → 15K43638+398#20360#19962
15K → 20K37754+323#19962#19639
20K → Half7814+64#19639#19575
Half → 25K36834+334#19575#19241
25K → 30K8464+842#19241#18399
30K → 20M4482+446#18399#17953
20M → 21M2954+291#17953#17662
21M → 35K1428+134#17662#17528
35K → 23M20427+177#17528#17351
23M → 24M10852+56#17351#17295
24M → 40K53116-63#17295#17358
40K → 25.2M2154-33#17358#17391
25.2M → Finish6474-10#17391#17401
TOTALS3991615+3376
📊

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