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BOSTON MARATHON 2025

Alexandra Borzo

IA

Bib: 15138 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
7:54/mi
24:33
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:52/mi
52:07
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:28/mi
1:21:31
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:16/mi
1:50:17
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
11:35/mi
1:58:11
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
13:18/mi
2:30:27
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
11:36/mi
3:06:28
↑ 181↓ 1480.2%
138 ft elev
20M
11:34/mi
3:22:11
↑ 64↓ 500.2%
148 ft elev
21M
12:19/mi
3:34:30
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
11:11/mi
3:42:52
↑ 17↓ 861.7%
156 ft elev
23M
10:23/mi
3:55:52
↑ 23↓ 630.6%
116 ft elev
24M
9:39/mi
4:05:31
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:45/mi
4:13:51
↓ 200.3%
20 ft elev
25.2M
9:54/mi
4:17:16
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:42/mi
4:26:08
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:11
Pace9:01 /mi
2nd Half
Distance13.11 mi
Time2:27:57
Pace11:17 /mi
📊Positive Split: 25.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:0424:337:5424:33
7:54
-
10K
6.21 mi11:23:3852:078:2327:34
8:52
+0:58
15K
9.32 mi11:53:021:21:318:4529:24
9:28
+0:36
20K
12.43 mi12:21:481:50:178:5228:46
9:16
-0:12
Half
13.11 mi12:29:421:58:119:017:54
11:35
+2:19
25K
15.53 mi13:01:582:30:279:4132:16
13:18
+1:43
30K
18.64 mi13:37:593:06:2810:0036:01
11:36
-1:42
20M
20.00 mi13:53:423:22:1110:0715:43
11:34
-0:02
21M
21.00 mi14:06:013:34:3010:1312:19
12:19
+0:45
35K
21.75 mi14:14:233:42:5210:158:22
11:11
-1:08
23M
23.00 mi14:27:233:55:5210:1513:00
10:23
-0:48
24M
24.00 mi14:37:024:05:3110:149:39
9:39
-0:44
40K
24.85 mi14:45:224:13:5110:138:20
9:45
+0:06
25.2M
25.20 mi14:48:474:17:1610:133:25
9:54
+0:09
Finish
26.22 mi14:57:394:26:0810:098:52
8:42
-1:12

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

7:54 /mi

Average Pace

10:09 /mi

Slowest Pace

13:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:00:59

23% of race

Time at Steady Pace

1:32:34

35% of race

Time at Slower Pace

1:52:35

42% of race

Average Pace: 10:09 /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 mi10:56:0424:337:5424:33
7:54
#15737
10K
6.21 mi11:23:3852:078:2327:34
8:52
#19171
15K
9.32 mi11:53:021:21:318:4529:24
9:28
#20987
20K
12.43 mi12:21:481:50:178:5228:46
9:16
#21304
Half
13.11 mi12:29:421:58:119:017:54
11:35
#21997
25K
15.53 mi13:01:582:30:279:4132:16
13:18
#23948
30K
18.64 mi13:37:593:06:2810:0036:01
11:36
#24238
20M
20.00 mi13:53:423:22:1110:0715:43
11:34
#24278
21M
21.00 mi14:06:013:34:3010:1312:19
12:19
#24262
35K
21.75 mi14:14:233:42:5210:158:22
11:11
#24270
23M
23.00 mi14:27:233:55:5210:1513:00
10:23
#24130
24M
24.00 mi14:37:024:05:3110:149:39
9:39
#23990
40K
24.85 mi14:45:224:13:5110:138:20
9:45
#23852
25.2M
25.20 mi14:48:474:17:1610:133:25
9:54
#23759
Finish
26.22 mi14:57:394:26:0810:098:52
8:42
#23615
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi15737498949892363994609460
10K6.21 mi3.10 mi19171-34346999-20106999-20102178084708470
15K9.32 mi3.11 mi20987-18168037-10388037-10382363994609460
20K12.43 mi3.11 mi21304-3178203-1668203-1662214486698669
Half13.11 mi0.68 mi21997-6938596-3938596-393271301148711487
25K15.53 mi2.42 mi23948-19519671-10759671-1075275061172111721
30K18.64 mi3.11 mi24238-2909858-1879858-187249851040510405
20M20.00 mi1.36 mi24278-409897-399897-39246641029810298
21M21.00 mi1.00 mi24262+169906-99906-9241291009810098
35K21.75 mi0.75 mi24270-89923-179923-17245961037810378
23M23.00 mi1.25 mi24130+1409864+599864+592170689228922
24M24.00 mi1.00 mi23990+1409799+659799+652023082148214
40K24.85 mi0.85 mi23852+1389746+539746+531966279837983
25.2M25.20 mi0.35 mi23759+939700+469700+461670364716471
Finish26.22 mi1.02 mi23615+1449649+519649+511752868506850

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

23639

Females

9460

F18-39

9460

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

21780

Females

8470

F18-39

8470

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

23639

Females

9460

F18-39

9460

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22144

Females

8669

F18-39

8669

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

27130

Females

11487

F18-39

11487

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

27506

Females

11721

F18-39

11721

25K→30K

15.5 - 18.6 mi

Top 88%
×9story building
+181ft-148ft

Overall

24985

Females

10405

F18-39

10405

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

24664

Females

10298

F18-39

10298

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

24129

Females

10098

F18-39

10098

21M→35K

21.0 - 21.8 mi

Top 87%
×7story building
+17ft-86ft

Overall

24596

Females

10378

F18-39

10378

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

21706

Females

8922

F18-39

8922

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20230

Females

8214

F18-39

8214

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19662

Females

7983

F18-39

7983

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16703

Females

6471

F18-39

6471

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

17528

Females

6850

F18-39

6850

Passing Analysis

Category:
Athletes Passed
1026
Passed By
8904
Net Change
-7878
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15737
5K → 10K43438-3434#15737#19171
10K → 15K151831-1816#19171#20987
15K → 20K115432-317#20987#21304
20K → Half1694-693#21304#21997
Half → 25K11952-1951#21997#23948
25K → 30K66356-290#23948#24238
30K → 20M5696-40#24238#24278
20M → 21M7155+16#24278#24262
21M → 35K3240-8#24262#24270
35K → 23M1477+140#24270#24130
23M → 24M1411+140#24130#23990
24M → 40K1391+138#23990#23852
40K → 25.2M930+93#23852#23759
25.2M → Finish1451+144#23759#23615
TOTALS10268904-7878

Passing Charts

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