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BOSTON MARATHON 2023

Aliz Barrera

Bib: 15641•F

IA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 37%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:25/mi
23:03
↑ 97↓ 3451.5%
10K· 6.21 mi
7:36/mi
46:41
↑ 79↓ 1380.4%
15K· 9.32 mi
7:44/mi
1:10:42
↑ 67↓ 78
20K· 12.43 mi
8:01/mi
1:35:36
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:40:53
↑ 19↓ 370.5%
25K· 15.53 mi
8:21/mi
2:01:08
↑ 66↓ 880.2%
30K· 18.64 mi
9:14/mi
2:29:49
↑ 181↓ 1480.2%
20M
8:31/mi
2:41:23
↑ 64↓ 500.2%
21M
9:13/mi
2:50:36
↑ 106↓ 241.6%
35K· 21.75 mi
8:53/mi
2:57:15
↑ 17↓ 861.7%
23M
8:40/mi
3:08:06
↑ 23↓ 630.6%
24M
8:26/mi
3:16:32
↓ 821.3%
40K· 24.85 mi
9:00/mi
3:24:14
↓ 200.3%
25.2M
9:17/mi
3:27:26
↑ 13↓ 160.2%
Finish· 26.22 mi
8:25/mi
3:36:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:53
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:55:08
Pace8:47 /mi
📊Positive Split: 14.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:4623:037:2523:03
7:25
-
10K
6.21 mi11:21:2446:417:3123:38
7:36
+0:11
15K
9.32 mi11:45:251:10:427:3524:01
7:44
+0:08
20K
12.43 mi12:10:191:35:367:4224:54
8:01
+0:17
Half
13.11 mi12:15:361:40:537:425:17
7:45
-0:16
25K
15.53 mi12:35:512:01:087:4820:15
8:21
+0:36
30K
18.64 mi13:04:322:29:498:0228:41
9:14
+0:53
20M
20.00 mi13:16:062:41:238:0411:34
8:31
-0:43
21M
21.00 mi13:25:192:50:368:079:13
9:13
+0:42
35K
21.75 mi13:31:582:57:158:096:39
8:53
-0:20
23M
23.00 mi13:42:493:08:068:1110:51
8:40
-0:13
24M
24.00 mi13:51:153:16:328:118:26
8:26
-0:14
40K
24.85 mi13:58:573:24:148:137:42
9:00
+0:34
25.2M
25.20 mi14:02:093:27:268:143:12
9:17
+0:17
Finish
26.22 mi14:10:443:36:018:158:35
8:25
-0:52

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

7:25 /mi

Average Pace

8:15 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:53

47% of race

Time at Steady Pace

59:41

28% of race

Time at Slower Pace

55:27

26% of race

Average Pace: 8:14 /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 mi10:57:4623:037:2523:03
7:25
#9001
10K
6.21 mi11:21:2446:417:3123:38
7:36
#10173
15K
9.32 mi11:45:251:10:427:3524:01
7:44
#10810
20K
12.43 mi12:10:191:35:367:4224:54
8:01
#11475
Half
13.11 mi12:15:361:40:537:425:17
7:45
#11503
25K
15.53 mi12:35:512:01:087:4820:15
8:21
#12165
30K
18.64 mi13:04:322:29:498:0228:41
9:14
#13578
20M
20.00 mi13:16:062:41:238:0411:34
8:31
#13584
21M
21.00 mi13:25:192:50:368:079:13
9:13
#13643
35K
21.75 mi13:31:582:57:158:096:39
8:53
#13809
23M
23.00 mi13:42:493:08:068:1110:51
8:40
#13800
24M
24.00 mi13:51:153:16:328:118:26
8:26
#13796
40K
24.85 mi13:58:573:24:148:137:42
9:00
#13879
25.2M
25.20 mi14:02:093:27:268:143:12
9:17
#13882
Finish
26.22 mi14:10:443:36:018:158:35
8:25
#13908
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi90011400140012130(Top 46%)2972(Top 26%)2972(Top 61%)
10K6.21 mi3.10 mi10173-11721918-5181918-51811408(Top 43%)2561(Top 22%)2561(Top 52%)
15K9.32 mi3.11 mi10810-6372240-3222240-32212130(Top 46%)2972(Top 26%)2972(Top 61%)
20K12.43 mi3.11 mi11475-6652603-3632603-36313576(Top 51%)3862(Top 34%)3862(Top 79%)
Half13.11 mi0.68 mi11503-282628-252628-2512342(Top 46%)3134(Top 27%)3134(Top 64%)
25K15.53 mi2.42 mi12165-6623031-4033031-40315269(Top 57%)4993(Top 44%)4993(Top 102%)
30K18.64 mi3.11 mi13578-14133888-8573888-85718310(Top 69%)6814(Top 60%)6814(Top 140%)
20M20.00 mi1.36 mi13584-63914-263914-2613713(Top 52%)4246(Top 37%)4246(Top 87%)
21M21.00 mi1.00 mi13643-593959-453959-4514570(Top 55%)4800(Top 42%)4800(Top 98%)
35K21.75 mi0.75 mi13809-1664077-1184077-11817391(Top 65%)6484(Top 57%)6484(Top 133%)
23M23.00 mi1.25 mi13800+94099-224099-2214184(Top 53%)4714(Top 41%)4714(Top 97%)
24M24.00 mi1.00 mi13796+44135-364135-3614096(Top 53%)4723(Top 41%)4723(Top 97%)
40K24.85 mi0.85 mi13879-834197-624197-6216176(Top 61%)5947(Top 52%)5947(Top 122%)
25.2M25.20 mi0.35 mi13882-34209-124209-1214127(Top 53%)4811(Top 42%)4811(Top 99%)
Finish26.22 mi1.02 mi13908-264237-284237-2814902(Top 56%)5203(Top 46%)5203(Top 107%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

12130

Females

2972

F18-39

2972

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11408

Females

2561

F18-39

2561

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

12130

Females

2972

F18-39

2972

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

13576

Females

3862

F18-39

3862

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12342

Females

3134

F18-39

3134

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

15269

Females

4993

F18-39

4993

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18310

Females

6814

F18-39

6814

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13713

Females

4246

F18-39

4246

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

14570

Females

4800

F18-39

4800

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17391

Females

6484

F18-39

6484

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14184

Females

4714

F18-39

4714

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14096

Females

4723

F18-39

4723

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16176

Females

5947

F18-39

5947

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14127

Females

4811

F18-39

4811

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

14902

Females

5203

F18-39

5203

Passing Analysis

Category:
Athletes Passed
640
Passed By
5546
Net Change
-4907
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9001
5K → 10K391210-1172#9001#10173
10K → 15K39676-637#10173#10810
15K → 20K37702-665#10810#11475
20K → Half2149-28#11475#11503
Half → 25K20682-662#11503#12165
25K → 30K171430-1413#12165#13578
30K → 20M9399-6#13578#13584
20M → 21M75134-59#13584#13643
21M → 35K20186-166#13643#13809
35K → 23M8778+9#13809#13800
23M → 24M7470+4#13800#13796
24M → 40K43126-83#13796#13879
40K → 25.2M1922-3#13879#13882
25.2M → Finish5682-26#13882#13908
TOTALS6405546-4907
📊

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