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BOSTON MARATHON 2025

Alena Perszyk

Bib: 14251•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 38%
Division (F18-39)
#0 / 5469
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
8:00/mi
24:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:56/mi
49:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:54/mi
1:14:01
↑ 67↓ 78
20K· 12.43 mi
8:01/mi
1:38:54
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:44:13
↑ 19↓ 370.5%
25K· 15.53 mi
8:03/mi
2:03:45
↑ 66↓ 880.2%
30K· 18.64 mi
8:37/mi
2:30:32
↑ 181↓ 1480.2%
20M
8:26/mi
2:41:59
↑ 64↓ 500.2%
21M
8:44/mi
2:50:43
↑ 106↓ 241.6%
35K· 21.75 mi
8:15/mi
2:56:53
↑ 17↓ 861.7%
23M
8:34/mi
3:07:37
↑ 23↓ 630.6%
24M
8:34/mi
3:16:11
↓ 821.3%
40K· 24.85 mi
8:43/mi
3:23:38
↓ 200.3%
25.2M
9:49/mi
3:27:01
↑ 13↓ 160.2%
Finish· 26.22 mi
7:38/mi
3:34:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:13
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:50:35
Pace8:26 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:3024:508:0024:50
8:00
-
10K
6.21 mi11:21:0949:297:5824:39
7:56
-0:04
15K
9.32 mi11:45:411:14:017:5624:32
7:54
-0:02
20K
12.43 mi12:10:341:38:547:5724:53
8:01
+0:07
Half
13.11 mi12:15:531:44:137:575:19
7:48
-0:13
25K
15.53 mi12:35:252:03:457:5819:32
8:03
+0:15
30K
18.64 mi13:02:122:30:328:0526:47
8:37
+0:34
20M
20.00 mi13:13:392:41:598:0611:27
8:26
-0:11
21M
21.00 mi13:22:232:50:438:088:44
8:44
+0:18
35K
21.75 mi13:28:332:56:538:086:10
8:15
-0:29
23M
23.00 mi13:39:173:07:378:0910:44
8:34
+0:19
24M
24.00 mi13:47:513:16:118:108:34
8:34
0:00
40K
24.85 mi13:55:183:23:388:127:27
8:43
+0:09
25.2M
25.20 mi13:58:413:27:018:133:23
9:49
+1:06
Finish
26.22 mi14:06:283:34:488:127:47
7:38
-2:11

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

7:38 /mi

Average Pace

8:12 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:02:17

29% of race

Time at Steady Pace

1:26:52

40% of race

Time at Slower Pace

1:05:39

31% of race

Average Pace: 8:12 /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 mi10:56:3024:508:0024:50
8:00
#16534
10K
6.21 mi11:21:0949:297:5824:39
7:56
#16214
15K
9.32 mi11:45:411:14:017:5624:32
7:54
#15856
20K
12.43 mi12:10:341:38:547:5724:53
8:01
#15623
Half
13.11 mi12:15:531:44:137:575:19
7:48
#15539
25K
15.53 mi12:35:252:03:457:5819:32
8:03
#15296
30K
18.64 mi13:02:122:30:328:0526:47
8:37
#15329
20M
20.00 mi13:13:392:41:598:0611:27
8:26
#15135
21M
21.00 mi13:22:232:50:438:088:44
8:44
#14877
35K
21.75 mi13:28:332:56:538:086:10
8:15
#14804
23M
23.00 mi13:39:173:07:378:0910:44
8:34
#14719
24M
24.00 mi13:47:513:16:118:108:34
8:34
#14710
40K
24.85 mi13:55:183:23:388:127:27
8:43
#14687
25.2M
25.20 mi13:58:413:27:018:133:23
9:49
#14702
Finish
26.22 mi14:06:283:34:488:127:47
7:38
#14522
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi165345470547015224(Top 54%)4705(Top 38%)4705(Top 86%)
10K6.21 mi3.10 mi16214+3205274+1965274+19615954(Top 56%)5096(Top 42%)5096(Top 93%)
15K9.32 mi3.11 mi15856+3585049+2255049+22515224(Top 54%)4705(Top 38%)4705(Top 86%)
20K12.43 mi3.11 mi15623+2334942+1074942+10715021(Top 53%)4653(Top 38%)4653(Top 85%)
Half13.11 mi0.68 mi15539+844887+554887+5514282(Top 50%)4233(Top 35%)4233(Top 77%)
25K15.53 mi2.42 mi15296+2434773+1144773+11414335(Top 50%)4388(Top 36%)4388(Top 80%)
30K18.64 mi3.11 mi15329-334841-684841-6815506(Top 55%)5177(Top 42%)5177(Top 95%)
20M20.00 mi1.36 mi15135+1944780+614780+6113339(Top 47%)4163(Top 34%)4163(Top 76%)
21M21.00 mi1.00 mi14877+2584654+1264654+12611924(Top 42%)3561(Top 29%)3561(Top 65%)
35K21.75 mi0.75 mi14804+734625+294625+2913932(Top 49%)4644(Top 38%)4644(Top 85%)
23M23.00 mi1.25 mi14719+854611+144611+1413769(Top 48%)4678(Top 38%)4678(Top 86%)
24M24.00 mi1.00 mi14710+94637-264637-2614954(Top 53%)5349(Top 44%)5349(Top 98%)
40K24.85 mi0.85 mi14687+234654-174654-1714710(Top 52%)5364(Top 44%)5364(Top 98%)
25.2M25.20 mi0.35 mi14702-154670-164670-1616165(Top 57%)6150(Top 50%)6150(Top 112%)
Finish26.22 mi1.02 mi14522+1804607+634607+6310267(Top 36%)3127(Top 26%)3127(Top 57%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15224

Females

4705

F18-39

4705

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

15954

Females

5096

F18-39

5096

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15224

Females

4705

F18-39

4705

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

15021

Females

4653

F18-39

4653

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14282

Females

4233

F18-39

4233

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14335

Females

4388

F18-39

4388

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15506

Females

5177

F18-39

5177

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13339

Females

4163

F18-39

4163

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11924

Females

3561

F18-39

3561

21M→35K

21.0 - 21.8 mi

Top 49%
×7story building
+17ft-86ft

Overall

13932

Females

4644

F18-39

4644

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13769

Females

4678

F18-39

4678

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14954

Females

5349

F18-39

5349

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14710

Females

5364

F18-39

5364

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16165

Females

6150

F18-39

6150

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

10267

Females

3127

F18-39

3127

Passing Analysis

Category:
Athletes Passed
2952
Passed By
940
Net Change
+2012
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16534
5K → 10K475155+320#16534#16214
10K → 15K42264+358#16214#15856
15K → 20K32895+233#15856#15623
20K → Half917+84#15623#15539
Half → 25K28643+243#15539#15296
25K → 30K228261-33#15296#15329
30K → 20M22531+194#15329#15135
20M → 21M27517+258#15135#14877
21M → 35K9724+73#14877#14804
35K → 23M14863+85#14804#14719
23M → 24M7970+9#14719#14710
24M → 40K8057+23#14710#14687
40K → 25.2M3247-15#14687#14702
25.2M → Finish1866+180#14702#14522
TOTALS2952940+2012
📊

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