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BOSTON MARATHON 2025

Zachary Zawacki

Bib: 26332•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
8:17/mi
25:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
50:35
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:15:33
↑ 67↓ 78
20K· 12.43 mi
8:10/mi
1:40:55
↑ 106↓ 860.1%
Half· 13.11 mi
8:15/mi
1:46:33
↑ 19↓ 370.5%
25K· 15.53 mi
9:07/mi
2:08:39
↑ 66↓ 880.2%
30K· 18.64 mi
10:07/mi
2:40:05
↑ 181↓ 1480.2%
20M
10:51/mi
2:54:49
↑ 64↓ 500.2%
21M
10:51/mi
3:05:40
↑ 106↓ 241.6%
35K· 21.75 mi
9:56/mi
3:13:06
↑ 17↓ 861.7%
23M
12:44/mi
3:29:03
↑ 23↓ 630.6%
24M
11:25/mi
3:40:28
↓ 821.3%
40K· 24.85 mi
10:47/mi
3:49:41
↓ 200.3%
25.2M
9:49/mi
3:53:04
↑ 13↓ 160.2%
Finish· 26.22 mi
8:40/mi
4:01:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:33
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time2:15:21
Pace10:19 /mi
📊Positive Split: 27.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:1425:448:1725:44
8:17
-
10K
6.21 mi12:09:0550:358:0824:51
8:00
-0:17
15K
9.32 mi12:34:031:15:338:0624:58
8:02
+0:02
20K
12.43 mi12:59:251:40:558:0725:22
8:10
+0:08
Half
13.11 mi13:05:031:46:338:085:38
8:15
+0:05
25K
15.53 mi13:27:092:08:398:1722:06
9:07
+0:52
30K
18.64 mi13:58:352:40:058:3531:26
10:07
+1:00
20M
20.00 mi14:13:192:54:498:4414:44
10:51
+0:44
21M
21.00 mi14:24:103:05:408:5010:51
10:51
0:00
35K
21.75 mi14:31:363:13:068:537:26
9:56
-0:55
23M
23.00 mi14:47:333:29:039:0515:57
12:44
+2:48
24M
24.00 mi14:58:583:40:289:1111:25
11:25
-1:19
40K
24.85 mi15:08:113:49:419:149:13
10:47
-0:38
25.2M
25.20 mi15:11:343:53:049:153:23
9:49
-0:58
Finish
26.22 mi15:20:244:01:549:148:50
8:40
-1:09

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

8:00 /mi

Average Pace

9:14 /mi

Slowest Pace

12:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:23

48% of race

Time at Steady Pace

1:04:21

27% of race

Time at Slower Pace

1:02:10

26% of race

Average Pace: 9:14 /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 mi11:44:1425:448:1725:44
8:17
#18599
10K
6.21 mi12:09:0550:358:0824:51
8:00
#17572
15K
9.32 mi12:34:031:15:338:0624:58
8:02
#17128
20K
12.43 mi12:59:251:40:558:0725:22
8:10
#16835
Half
13.11 mi13:05:031:46:338:085:38
8:15
#16876
25K
15.53 mi13:27:092:08:398:1722:06
9:07
#17491
30K
18.64 mi13:58:352:40:058:3531:26
10:07
#18684
20M
20.00 mi14:13:192:54:498:4414:44
10:51
#19238
21M
21.00 mi14:24:103:05:408:5010:51
10:51
#19390
35K
21.75 mi14:31:363:13:068:537:26
9:56
#19526
23M
23.00 mi14:47:333:29:039:0515:57
12:44
#20322
24M
24.00 mi14:58:583:40:289:1111:25
11:25
#20664
40K
24.85 mi15:08:113:49:419:149:13
10:47
#20781
25.2M
25.20 mi15:11:343:53:049:153:23
9:49
#20720
Finish
26.22 mi15:20:244:01:549:148:50
8:40
#20622
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18599118651186516318(Top 57%)10948(Top 68%)10948(Top 194%)
10K6.21 mi3.10 mi17572+102711439+42611439+42616464(Top 58%)11018(Top 68%)11018(Top 195%)
15K9.32 mi3.11 mi17128+44411292+14711292+14716318(Top 57%)10948(Top 68%)10948(Top 194%)
20K12.43 mi3.11 mi16835+29311146+14611146+14616082(Top 57%)10773(Top 67%)10773(Top 191%)
Half13.11 mi0.68 mi16876-4111163-1711163-1717642(Top 62%)11484(Top 71%)11484(Top 204%)
25K15.53 mi2.42 mi17491-61511388-22511388-22520412(Top 72%)12594(Top 78%)12594(Top 223%)
30K18.64 mi3.11 mi18684-119311868-48011868-48021950(Top 77%)13137(Top 82%)13137(Top 233%)
20M20.00 mi1.36 mi19238-55412066-19812066-19823258(Top 82%)13639(Top 85%)13639(Top 242%)
21M21.00 mi1.00 mi19390-15212107-4112107-4120969(Top 74%)12477(Top 77%)12477(Top 221%)
35K21.75 mi0.75 mi19526-13612152-4512152-4521705(Top 76%)12769(Top 79%)12769(Top 226%)
23M23.00 mi1.25 mi20322-79612468-31612468-31626084(Top 92%)14882(Top 92%)14882(Top 264%)
24M24.00 mi1.00 mi20664-34212618-15012618-15024738(Top 87%)14158(Top 88%)14158(Top 251%)
40K24.85 mi0.85 mi20781-11712649-3112649-3122624(Top 80%)13049(Top 81%)13049(Top 231%)
25.2M25.20 mi0.35 mi20720+6112614+3512614+3516139(Top 57%)9964(Top 62%)9964(Top 177%)
Finish26.22 mi1.02 mi20622+9812556+5812556+5817278(Top 61%)10546(Top 65%)10546(Top 187%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16318

Males

10948

M18-39

10948

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16464

Males

11018

M18-39

11018

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16318

Males

10948

M18-39

10948

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16082

Males

10773

M18-39

10773

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17642

Males

11484

M18-39

11484

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

20412

Males

12594

M18-39

12594

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

21950

Males

13137

M18-39

13137

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

23258

Males

13639

M18-39

13639

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

20969

Males

12477

M18-39

12477

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21705

Males

12769

M18-39

12769

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

26084

Males

14882

M18-39

14882

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

24738

Males

14158

M18-39

14158

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22624

Males

13049

M18-39

13049

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16139

Males

9964

M18-39

9964

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

17278

Males

10546

M18-39

10546

Passing Analysis

Category:
Athletes Passed
2319
Passed By
4342
Net Change
-2023
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18599
5K → 10K105427+1027#18599#17572
10K → 15K49753+444#17572#17128
15K → 20K34855+293#17128#16835
20K → Half2162-41#16835#16876
Half → 25K49664-615#16876#17491
25K → 30K381231-1193#17491#18684
30K → 20M19573-554#18684#19238
20M → 21M55207-152#19238#19390
21M → 35K19155-136#19390#19526
35K → 23M13809-796#19526#20322
23M → 24M11353-342#20322#20664
24M → 40K28145-117#20664#20781
40K → 25.2M632+61#20781#20720
25.2M → Finish1046+98#20720#20622
TOTALS23194342-2023
📊

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