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BOSTON MARATHON 2025

Andrea Lazaro

Bib: 15878 F MX

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 19%
Division (F18-39)
#0 / 5469
Top 34%
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
7:15/mi
22:30
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:08/mi
44:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:08/mi
1:06:49
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:23/mi
1:29:45
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:18/mi
1:34:44
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:36/mi
1:53:10
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:07/mi
2:18:23
↑ 181↓ 1480.2%
138 ft elev
20M
8:20/mi
2:29:42
↑ 64↓ 500.2%
148 ft elev
21M
8:47/mi
2:38:29
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:44/mi
2:44:16
↑ 17↓ 861.7%
156 ft elev
23M
8:06/mi
2:54:24
↑ 23↓ 630.6%
116 ft elev
24M
8:01/mi
3:02:25
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:03/mi
3:09:18
↓ 200.3%
20 ft elev
25.2M
9:05/mi
3:12:26
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:53/mi
3:20:28
↑ 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
Time1:34:44
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:45:44
Pace8:04 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:3722:307:1522:30
7:15
-
10K
6.21 mi11:16:4644:397:1122:09
7:08
-0:07
15K
9.32 mi11:38:561:06:497:1022:10
7:08
0:00
20K
12.43 mi12:01:521:29:457:1322:56
7:23
+0:15
Half
13.11 mi12:06:511:34:447:144:59
7:18
-0:05
25K
15.53 mi12:25:171:53:107:1718:26
7:36
+0:18
30K
18.64 mi12:50:302:18:237:2525:13
8:07
+0:31
20M
20.00 mi13:01:492:29:427:2911:19
8:20
+0:13
21M
21.00 mi13:10:362:38:297:338:47
8:47
+0:27
35K
21.75 mi13:16:232:44:167:335:47
7:44
-1:03
23M
23.00 mi13:26:312:54:247:3510:08
8:06
+0:22
24M
24.00 mi13:34:323:02:257:368:01
8:01
-0:05
40K
24.85 mi13:41:253:09:187:376:53
8:03
+0:02
25.2M
25.20 mi13:44:333:12:267:383:08
9:05
+1:02
Finish
26.22 mi13:52:353:20:287:398:02
7:53
-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

7:08 /mi

Average Pace

7:39 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:10

56% of race

Time at Steady Pace

1:04:04

32% of race

Time at Slower Pace

23:14

12% of race

Average Pace: 7:39 /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 mi10:54:3722:307:1522:30
7:15
#9856
10K
6.21 mi11:16:4644:397:1122:09
7:08
#9348
15K
9.32 mi11:38:561:06:497:1022:10
7:08
#9060
20K
12.43 mi12:01:521:29:457:1322:56
7:23
#9185
Half
13.11 mi12:06:511:34:447:144:59
7:18
#9227
25K
15.53 mi12:25:171:53:107:1718:26
7:36
#9446
30K
18.64 mi12:50:302:18:237:2525:13
8:07
#9908
20M
20.00 mi13:01:492:29:427:2911:19
8:20
#10103
21M
21.00 mi13:10:362:38:297:338:47
8:47
#10221
35K
21.75 mi13:16:232:44:167:335:47
7:44
#10213
23M
23.00 mi13:26:312:54:247:3510:08
8:06
#10216
24M
24.00 mi13:34:323:02:257:368:01
8:01
#10223
40K
24.85 mi13:41:253:09:187:376:53
8:03
#10208
25.2M
25.20 mi13:44:333:12:267:383:08
9:05
#10235
Finish
26.22 mi13:52:353:20:287:398:02
7:53
#10288
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi985617441744860212701270
10K6.21 mi3.10 mi9348+5081521+2231521+223893513501350
15K9.32 mi3.11 mi9060+2881423+981423+98860212701270
20K12.43 mi3.11 mi9185-1251496-731496-73976018581858
Half13.11 mi0.68 mi9227-421521-251521-251012420302030
25K15.53 mi2.42 mi9446-2191653-1321653-1321079624832483
30K18.64 mi3.11 mi9908-4621911-2581911-2581222033963396
20M20.00 mi1.36 mi10103-1952038-1272038-1271267137813781
21M21.00 mi1.00 mi10221-1182150-1122150-1121220337003700
35K21.75 mi0.75 mi10213+82166-162166-161033227572757
23M23.00 mi1.25 mi10216-32219-532219-531071430863086
24M24.00 mi1.00 mi10223-72251-322251-321137134943494
40K24.85 mi0.85 mi10208+152281-302281-301057331973197
25.2M25.20 mi0.35 mi10235-272306-252306-251229540944094
Finish26.22 mi1.02 mi10288-532370-642370-641206639543954

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

8602

Females

1270

F18-39

1270

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8935

Females

1350

F18-39

1350

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

8602

Females

1270

F18-39

1270

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9760

Females

1858

F18-39

1858

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

10124

Females

2030

F18-39

2030

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10796

Females

2483

F18-39

2483

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

12220

Females

3396

F18-39

3396

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12671

Females

3781

F18-39

3781

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12203

Females

3700

F18-39

3700

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

10332

Females

2757

F18-39

2757

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10714

Females

3086

F18-39

3086

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

11371

Females

3494

F18-39

3494

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10573

Females

3197

F18-39

3197

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12295

Females

4094

F18-39

4094

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

12066

Females

3954

F18-39

3954

Passing Analysis

Category:
Athletes Passed
1826
Passed By
2255
Net Change
-432
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9856
5K → 10K57567+508#9856#9348
10K → 15K33143+288#9348#9060
15K → 20K128253-125#9060#9185
20K → Half2264-42#9185#9227
Half → 25K98317-219#9227#9446
25K → 30K110572-462#9446#9908
30K → 20M71264-195#9908#10103
20M → 21M72189-118#10103#10221
21M → 35K5951+8#10221#10213
35K → 23M109112-3#10213#10216
23M → 24M7885-7#10216#10223
24M → 40K8368+15#10223#10208
40K → 25.2M3360-27#10208#10235
25.2M → Finish57110-53#10235#10288
TOTALS18262255-432

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