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BOSTON MARATHON 2025

Aliz Barrera

Bib: 19206•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 43%
Gender (Female)
#0 / 12228
Top 28%
Division (F18-39)
#0 / 5469
Top 46%
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
7:37/mi
23:39
↑ 97↓ 3451.5%
10K· 6.21 mi
7:35/mi
47:13
↑ 79↓ 1380.4%
15K· 9.32 mi
7:45/mi
1:11:19
↑ 67↓ 78
20K· 12.43 mi
7:58/mi
1:36:05
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:41:30
↑ 19↓ 370.5%
25K· 15.53 mi
7:58/mi
2:00:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:14/mi
2:26:26
↑ 181↓ 1480.2%
20M
8:08/mi
2:37:29
↑ 64↓ 500.2%
21M
8:40/mi
2:46:09
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:52:01
↑ 17↓ 861.7%
23M
8:07/mi
3:02:11
↑ 23↓ 630.6%
24M
7:48/mi
3:09:59
↓ 821.3%
40K· 24.85 mi
7:50/mi
3:16:41
↓ 200.3%
25.2M
8:42/mi
3:19:41
↑ 13↓ 160.2%
Finish· 26.22 mi
7:26/mi
3:27:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:30
Pace7:45 /mi
2nd Half
Distance13.11 mi
Time1:45:46
Pace8:04 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5023:397:3723:39
7:37
-
10K
6.21 mi11:41:2447:137:3623:34
7:35
-0:02
15K
9.32 mi12:05:301:11:197:3924:06
7:45
+0:10
20K
12.43 mi12:30:161:36:057:4424:46
7:58
+0:13
Half
13.11 mi12:35:411:41:307:455:25
7:56
-0:02
25K
15.53 mi12:55:012:00:507:4719:20
7:58
+0:02
30K
18.64 mi13:20:372:26:267:5125:36
8:14
+0:16
20M
20.00 mi13:31:402:37:297:5211:03
8:08
-0:06
21M
21.00 mi13:40:202:46:097:558:40
8:40
+0:32
35K
21.75 mi13:46:122:52:017:555:52
7:51
-0:49
23M
23.00 mi13:56:223:02:117:5510:10
8:07
+0:16
24M
24.00 mi14:04:103:09:597:557:48
7:48
-0:19
40K
24.85 mi14:10:523:16:417:556:42
7:50
+0:02
25.2M
25.20 mi14:13:523:19:417:553:00
8:42
+0:52
Finish
26.22 mi14:21:273:27:167:557:35
7:26
-1:16

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

7:26 /mi

Average Pace

7:55 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:00

82% of race

Time at Steady Pace

37:16

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi11:17:5023:397:3723:39
7:37
#13222
10K
6.21 mi11:41:2447:137:3623:34
7:35
#13032
15K
9.32 mi12:05:301:11:197:3924:06
7:45
#13327
20K
12.43 mi12:30:161:36:057:4424:46
7:58
#13636
Half
13.11 mi12:35:411:41:307:455:25
7:56
#13731
25K
15.53 mi12:55:012:00:507:4719:20
7:58
#13706
30K
18.64 mi13:20:372:26:267:5125:36
8:14
#13535
20M
20.00 mi13:31:402:37:297:5211:03
8:08
#13330
21M
21.00 mi13:40:202:46:097:558:40
8:40
#13177
35K
21.75 mi13:46:122:52:017:555:52
7:51
#13103
23M
23.00 mi13:56:223:02:117:5510:10
8:07
#12924
24M
24.00 mi14:04:103:09:597:557:48
7:48
#12765
40K
24.85 mi14:10:523:16:417:556:42
7:50
#12603
25.2M
25.20 mi14:13:523:19:417:553:00
8:42
#12538
Finish
26.22 mi14:21:273:27:167:557:35
7:26
#12351
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi132223445344513996(Top 49%)4008(Top 33%)4008(Top 73%)
10K6.21 mi3.10 mi13032+1903356+893356+8912886(Top 45%)3302(Top 27%)3302(Top 60%)
15K9.32 mi3.11 mi13327-2953588-2323588-23213996(Top 49%)4008(Top 33%)4008(Top 73%)
20K12.43 mi3.11 mi13636-3093801-2133801-21314711(Top 52%)4483(Top 37%)4483(Top 82%)
Half13.11 mi0.68 mi13731-953872-713872-7115417(Top 54%)4817(Top 39%)4817(Top 88%)
25K15.53 mi2.42 mi13706+253874-23874-213682(Top 48%)4042(Top 33%)4042(Top 74%)
30K18.64 mi3.11 mi13535+1713838+363838+3613100(Top 46%)3878(Top 32%)3878(Top 71%)
20M20.00 mi1.36 mi13330+2053760+783760+7811342(Top 40%)3096(Top 25%)3096(Top 57%)
21M21.00 mi1.00 mi13177+1533707+533707+5311475(Top 40%)3330(Top 27%)3330(Top 61%)
35K21.75 mi0.75 mi13103+743679+283679+2811140(Top 39%)3166(Top 26%)3166(Top 58%)
23M23.00 mi1.25 mi12924+1793620+593620+5910871(Top 38%)3158(Top 26%)3158(Top 58%)
24M24.00 mi1.00 mi12765+1593563+573563+579819(Top 35%)2707(Top 22%)2707(Top 49%)
40K24.85 mi0.85 mi12603+1623506+573506+579051(Top 32%)2472(Top 20%)2472(Top 45%)
25.2M25.20 mi0.35 mi12538+653492+143492+1410035(Top 35%)3022(Top 25%)3022(Top 55%)
Finish26.22 mi1.02 mi12351+1873433+593433+598797(Top 31%)2435(Top 20%)2435(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13996

Females

4008

F18-39

4008

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12886

Females

3302

F18-39

3302

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13996

Females

4008

F18-39

4008

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14711

Females

4483

F18-39

4483

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15417

Females

4817

F18-39

4817

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

13682

Females

4042

F18-39

4042

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

13100

Females

3878

F18-39

3878

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

11342

Females

3096

F18-39

3096

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

11475

Females

3330

F18-39

3330

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

11140

Females

3166

F18-39

3166

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10871

Females

3158

F18-39

3158

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9819

Females

2707

F18-39

2707

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9051

Females

2472

F18-39

2472

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

10035

Females

3022

F18-39

3022

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8797

Females

2435

F18-39

2435

Passing Analysis

Category:
Athletes Passed
2466
Passed By
1595
Net Change
+871
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13222
5K → 10K380190+190#13222#13032
10K → 15K113408-295#13032#13327
15K → 20K117426-309#13327#13636
20K → Half13108-95#13636#13731
Half → 25K191166+25#13731#13706
25K → 30K311140+171#13706#13535
30K → 20M23328+205#13535#13330
20M → 21M18532+153#13330#13177
21M → 35K9218+74#13177#13103
35K → 23M20425+179#13103#12924
23M → 24M17516+159#12924#12765
24M → 40K17412+162#12765#12603
40K → 25.2M749+65#12603#12538
25.2M → Finish20417+187#12538#12351
TOTALS24661595+871
📊

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