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BOSTON MARATHON 2025

Alexander Pierola

Bib: 30021 M BR

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:53/mi
30:43
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:40/mi
1:00:46
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
10:00/mi
1:31:51
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
11:50/mi
2:08:38
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
11:48/mi
2:16:41
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
13:20/mi
2:49:00
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
13:07/mi
3:29:46
↑ 181↓ 1480.2%
138 ft elev
20M
13:20/mi
3:47:53
↑ 64↓ 500.2%
148 ft elev
21M
16:27/mi
4:04:20
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
15:02/mi
4:15:35
↑ 17↓ 861.7%
156 ft elev
23M
16:26/mi
4:36:10
↑ 23↓ 630.6%
116 ft elev
24M
15:34/mi
4:51:44
↓ 821.3%
34 ft elev
40K· 24.85 mi
15:34/mi
5:05:03
↓ 200.3%
20 ft elev
25.2M
19:23/mi
5:11:44
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
14:06/mi
5:26:06
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
2:16:4110:26 /mi⚡ faster
2nd Half
3:09:2514:27 /mi+38.6%
Positive split — 38.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
30:439:533.11 mi30:43
9:53
-
10K
1:00:469:473.10 mi30:03
9:40
-0:13
15K
1:31:519:513.11 mi31:05
10:00
+0:20
20K
2:08:3810:213.11 mi36:47
11:50
+1:50
Half(13.11 mi)
2:16:4110:260.68 mi8:03
11:48
-0:02
25K
2:49:0010:532.42 mi32:19
13:20
+1:32
30K
3:29:4611:153.11 mi40:46
13:07
-0:13
20M
3:47:5311:241.36 mi18:07
13:20
+0:13
21M
4:04:2011:381.00 mi16:27
16:27
+3:07
35K
4:15:3511:450.75 mi11:15
15:02
-1:25
23M
4:36:1012:001.25 mi20:35
16:26
+1:24
24M
4:51:4412:091.00 mi15:34
15:34
-0:52
40K
5:05:0312:160.85 mi13:19
15:34
0:00
25.2M
5:11:4412:220.35 mi6:41
19:23
+3:49
Finish(26.22 mi)
5:26:0612:271.02 mi14:22
14:06
-5:17
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

9:40 /mi

Average Pace

12:27 /mi

Slowest Pace

19:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:16:41

42% of race

Time at Steady Pace

1:45:34

32% of race

Time at Slower Pace

1:23:51

26% of race

Average Pace: 12:26 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi253201487414874249991472614726
10K3.10 mi24926+39414675+19914675+199245461449714497
15K3.11 mi24944-1814692-1714692-17249991472614726
20K3.11 mi25690-74615017-32515017-325269741553115531
Half(13.11 mi)0.68 mi25849-15915079-6215079-62273021564115641
25K2.42 mi26317-46815285-20615285-206275171572015720
30K3.11 mi26463-14615313-2815313-28267981534915349
20M1.36 mi26518-5515325-1215325-12267551525815258
21M1.00 mi26651-13315372-4715372-47279921587415874
35K0.75 mi26782-13115417-4515417-45280751589815898
23M1.25 mi26986-20415502-8515502-85282231598215982
24M1.00 mi27085-9915530-2815530-28281581592815928
40K0.85 mi27150-6515552-2215552-22279761582115821
25.2M0.35 mi27212-6215581-2915581-29283331605516055
Finish(26.22 mi)1.02 mi27296-8415608-2715608-27280761588715887

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

24999

Males

14726

M18-39

14726

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

24546

Males

14497

M18-39

14497

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

24999

Males

14726

M18-39

14726

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

26974

Males

15531

M18-39

15531

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

27302

Males

15641

M18-39

15641

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

27517

Males

15720

M18-39

15720

25K→30K

15.5 - 18.6 mi

Top 94%
×9story building
+181ft-148ft

Overall

26798

Males

15349

M18-39

15349

30K→20M

18.6 - 20.0 mi

Top 94%
×5story building
+64ft-50ft

Overall

26755

Males

15258

M18-39

15258

20M→21M

20.0 - 21.0 mi

Top 99%
×8story building
+106ft-24ft

Overall

27992

Males

15874

M18-39

15874

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

28075

Males

15898

M18-39

15898

35K→23M

21.8 - 23.0 mi

Top 99%
×5story building
+23ft-63ft

Overall

28223

Males

15982

M18-39

15982

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

28158

Males

15928

M18-39

15928

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

27976

Males

15821

M18-39

15821

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

28333

Males

16055

M18-39

16055

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

28076

Males

15887

M18-39

15887

Passing Analysis

Category:
▼Net Change
0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#25320
5K → 10K
47441+394
#25320 → #24926
10K → 15K
139121-18
#24926 → #24944
15K → 20K
76014-746
#24944 → #25690
20K → Half
1601-159
#25690 → #25849
Half → 25K
4724-468
#25849 → #26317
25K → 30K
20357-146
#26317 → #26463
30K → 20M
7823-55
#26463 → #26518
20M → 21M
14310-133
#26518 → #26651
21M → 35K
1343-131
#26651 → #26782
35K → 23M
2095-204
#26782 → #26986
23M → 24M
1045-99
#26986 → #27085
24M → 40K
749-65
#27085 → #27150
40K → 25.2M
620-62
#27150 → #27212
25.2M → Finish
906-84
#27212 → #27296
TOTALS
2675699-1976
#25320 → #27296

Passing Visualized

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