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BOSTON MARATHON 2025

Zachary Perskin

Bib: 27137•M

NY

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

Start
0:00:00
Race begins
5K· 3.11 mi
34:26
Rank: #27645
Start → 5K
11:05/mi
34:26 split
10K· 6.21 mi
1:10:09
Rank: #27631 (+14)
5K → 10K
11:30/mi
35:43 split
15K· 9.32 mi
1:47:07
Rank: #27614 (+17)
10K → 15K
11:54/mi
36:58 split
20K· 12.43 mi
2:26:27
Rank: #27661 (-47)
15K → 20K
12:40/mi
39:20 split
Half· 13.11 mi
2:35:25
Rank: #27699 (-38)
20K → Half
13:09/mi
8:58 split
25K· 15.53 mi
3:10:15
Rank: #27795 (-96)
Half → 25K
14:22/mi
34:50 split
30K· 18.64 mi
3:57:43
Rank: #27908 (-113)
25K → 30K
15:17/mi
47:28 split
20M
4:19:43
Rank: #27987 (-79)
30K → 20M
16:11/mi
22:00 split
21M
4:37:56
Rank: #28060 (-73)
20M → 21M
18:13/mi
18:13 split
35K· 21.75 mi
4:51:19
Rank: #28129 (-69)
21M → 35K
17:53/mi
13:23 split
23M
5:10:46
Rank: #28148 (-19)
35K → 23M
15:32/mi
19:27 split
24M
5:25:50
Rank: #28163 (-15)
23M → 24M
15:04/mi
15:04 split
40K· 24.85 mi
5:38:46
Rank: #28162 (+1)
24M → 40K
15:08/mi
12:56 split
25.2M
5:45:12
Rank: #28177 (-15)
40K → 25.2M
18:39/mi
6:26 split
Finish· 26.22 mi
6:00:26
Rank: #28201 (-24)
25.2M → Finish
14:57/mi
15:14 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:35:25
Pace11:51 /mi
2nd Half
Distance13.11 mi
Time3:25:01
Pace15:38 /mi
📊Positive Split: 31.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:4734:2611:0534:26
11:05
-
10K
6.21 mi12:30:301:10:0911:1735:43
11:30
+0:25
15K
9.32 mi13:07:281:47:0711:3036:58
11:54
+0:24
20K
12.43 mi13:46:482:26:2711:4739:20
12:40
+0:46
Half
13.11 mi13:55:462:35:2511:518:58
13:09
+0:29
25K
15.53 mi14:30:363:10:1512:1534:50
14:22
+1:13
30K
18.64 mi15:18:043:57:4312:4547:28
15:17
+0:55
20M
20.00 mi15:40:044:19:4312:5922:00
16:11
+0:54
21M
21.00 mi15:58:174:37:5613:1418:13
18:13
+2:02
35K
21.75 mi16:11:404:51:1913:2413:23
17:53
-0:20
23M
23.00 mi16:31:075:10:4613:3119:27
15:32
-2:21
24M
24.00 mi16:46:115:25:5013:3515:04
15:04
-0:28
40K
24.85 mi16:59:075:38:4613:3812:56
15:08
+0:04
25.2M
25.20 mi17:05:335:45:1213:426:26
18:39
+3:31
Finish
26.22 mi17:20:476:00:2613:4515:14
14:57
-3:42

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

11:05 /mi

Average Pace

13:45 /mi

Slowest Pace

18:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:25

43% of race

Time at Steady Pace

2:46:59

46% of race

Time at Slower Pace

38:02

11% of race

Average Pace: 13:45 /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 mi11:54:4734:2611:0534:26
11:05
#27645
10K
6.21 mi12:30:301:10:0911:1735:43
11:30
#27631
15K
9.32 mi13:07:281:47:0711:3036:58
11:54
#27614
20K
12.43 mi13:46:482:26:2711:4739:20
12:40
#27661
Half
13.11 mi13:55:462:35:2511:518:58
13:09
#27699
25K
15.53 mi14:30:363:10:1512:1534:50
14:22
#27795
30K
18.64 mi15:18:043:57:4312:4547:28
15:17
#27908
20M
20.00 mi15:40:044:19:4312:5922:00
16:11
#27987
21M
21.00 mi15:58:174:37:5613:1418:13
18:13
#28060
35K
21.75 mi16:11:404:51:1913:2413:23
17:53
#28129
23M
23.00 mi16:31:075:10:4613:3119:27
15:32
#28148
24M
24.00 mi16:46:115:25:5013:3515:04
15:04
#28163
40K
24.85 mi16:59:075:38:4613:3812:56
15:08
#28162
25.2M
25.20 mi17:05:335:45:1213:426:26
18:39
#28177
Finish
26.22 mi17:20:476:00:2613:4515:14
14:57
#28201
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi27645158431584327559(Top 97%)15765(Top 98%)15765(Top 279%)
10K6.21 mi3.10 mi27631+1415839+415839+427599(Top 97%)15807(Top 98%)15807(Top 280%)
15K9.32 mi3.11 mi27614+1715818+2115818+2127559(Top 97%)15765(Top 98%)15765(Top 279%)
20K12.43 mi3.11 mi27661-4715821-315821-327633(Top 97%)15787(Top 98%)15787(Top 280%)
Half13.11 mi0.68 mi27699-3815832-1115832-1128064(Top 99%)15949(Top 99%)15949(Top 283%)
25K15.53 mi2.42 mi27795-9615873-4115873-4128055(Top 99%)15939(Top 99%)15939(Top 283%)
30K18.64 mi3.11 mi27908-11315907-3415907-3428130(Top 99%)15953(Top 99%)15953(Top 283%)
20M20.00 mi1.36 mi27987-7915933-2615933-2628209(Top 99%)15985(Top 99%)15985(Top 283%)
21M21.00 mi1.00 mi28060-7315962-2915962-2928299(Top 100%)16041(Top 100%)16041(Top 284%)
35K21.75 mi0.75 mi28129-6915981-1915981-1928347(Top 100%)16067(Top 100%)16067(Top 285%)
23M23.00 mi1.25 mi28148-1915985-415985-428068(Top 99%)15883(Top 99%)15883(Top 282%)
24M24.00 mi1.00 mi28163-1515989-415989-428068(Top 99%)15875(Top 99%)15875(Top 281%)
40K24.85 mi0.85 mi28162+115987+215987+227823(Top 98%)15732(Top 98%)15732(Top 279%)
25.2M25.20 mi0.35 mi28177-1515990-315990-328287(Top 100%)16021(Top 99%)16021(Top 284%)
Finish26.22 mi1.02 mi28201-2415999-915999-928237(Top 99%)15992(Top 99%)15992(Top 283%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

27559

Males

15765

M18-39

15765

5K→10K

3.1 - 6.2 mi

Top 97%
×5story building
+79ft-138ft

Overall

27599

Males

15807

M18-39

15807

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

27559

Males

15765

M18-39

15765

15K→20K

9.3 - 12.4 mi

Top 97%
×5story building
+106ft-86ft

Overall

27633

Males

15787

M18-39

15787

20K→Half

12.4 - 13.1 mi

Top 99%
×2story building
+19ft-37ft

Overall

28064

Males

15949

M18-39

15949

Half→25K

13.1 - 15.5 mi

Top 99%
×4story building
+66ft-88ft

Overall

28055

Males

15939

M18-39

15939

25K→30K

15.5 - 18.6 mi

Top 99%
×9story building
+181ft-148ft

Overall

28130

Males

15953

M18-39

15953

30K→20M

18.6 - 20.0 mi

Top 99%
×5story building
+64ft-50ft

Overall

28209

Males

15985

M18-39

15985

20M→21M

20.0 - 21.0 mi

Top 100%
×8story building
+106ft-24ft

Overall

28299

Males

16041

M18-39

16041

21M→35K

21.0 - 21.8 mi

Top 100%
×7story building
+17ft-86ft

Overall

28347

Males

16067

M18-39

16067

35K→23M

21.8 - 23.0 mi

Top 99%
×5story building
+23ft-63ft

Overall

28068

Males

15883

M18-39

15883

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

28068

Males

15875

M18-39

15875

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

27823

Males

15732

M18-39

15732

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

28287

Males

16021

M18-39

16021

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

28237

Males

15992

M18-39

15992

Passing Analysis

Category:
Athletes Passed
340
Passed By
896
Net Change
-556
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27645
5K → 10K10894+14#27645#27631
10K → 15K9679+17#27631#27614
15K → 20K5198-47#27614#27661
20K → Half543-38#27661#27699
Half → 25K25121-96#27699#27795
25K → 30K24137-113#27795#27908
30K → 20M685-79#27908#27987
20M → 21M376-73#27987#28060
21M → 35K069-69#28060#28129
35K → 23M726-19#28129#28148
23M → 24M419-15#28148#28163
24M → 40K98+1#28163#28162
40K → 25.2M015-15#28162#28177
25.2M → Finish226-24#28177#28201
TOTALS340896-556
📊

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