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BOSTON MARATHON 2023

Leslie Alvarez

Bib: 18830•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 47%
Division (F40-44)
#0 / 1878
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
8:08/mi
25:17
↑ 97↓ 3451.5%
10K· 6.21 mi
8:10/mi
50:38
↑ 79↓ 1380.4%
15K· 9.32 mi
8:40/mi
1:17:35
↑ 67↓ 78
20K· 12.43 mi
9:05/mi
1:45:49
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:51:43
↑ 19↓ 370.5%
25K· 15.53 mi
8:46/mi
2:12:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:11/mi
2:41:32
↑ 181↓ 1480.2%
20M
9:24/mi
2:54:18
↑ 64↓ 500.2%
21M
10:02/mi
3:04:20
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
3:10:34
↑ 17↓ 861.7%
23M
8:58/mi
3:21:47
↑ 23↓ 630.6%
24M
8:45/mi
3:30:32
↓ 821.3%
40K· 24.85 mi
9:02/mi
3:38:15
↓ 200.3%
25.2M
9:34/mi
3:41:33
↑ 13↓ 160.2%
Finish· 26.22 mi
8:28/mi
3:50:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:43
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time1:58:28
Pace9:02 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:3025:178:0825:17
8:08
-
10K
6.21 mi11:41:5150:388:0925:21
8:10
+0:02
15K
9.32 mi12:08:481:17:358:1926:57
8:40
+0:30
20K
12.43 mi12:37:021:45:498:3128:14
9:05
+0:25
Half
13.11 mi12:42:561:51:438:315:54
8:39
-0:26
25K
15.53 mi13:04:122:12:598:3421:16
8:46
+0:07
30K
18.64 mi13:32:452:41:328:4028:33
9:11
+0:25
20M
20.00 mi13:45:312:54:188:4312:46
9:24
+0:13
21M
21.00 mi13:55:333:04:208:4710:02
10:02
+0:38
35K
21.75 mi14:01:473:10:348:466:14
8:20
-1:42
23M
23.00 mi14:13:003:21:478:4611:13
8:58
+0:38
24M
24.00 mi14:21:453:30:328:468:45
8:45
-0:13
40K
24.85 mi14:29:283:38:158:477:43
9:02
+0:17
25.2M
25.20 mi14:32:463:41:338:483:18
9:34
+0:32
Finish
26.22 mi14:41:243:50:118:478:38
8:28
-1:06

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

8:08 /mi

Average Pace

8:47 /mi

Slowest Pace

10:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:30

28% of race

Time at Steady Pace

1:14:05

32% of race

Time at Slower Pace

1:30:36

39% of race

Average Pace: 8:47 /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 mi11:16:3025:178:0825:17
8:08
#15003
10K
6.21 mi11:41:5150:388:0925:21
8:10
#15455
15K
9.32 mi12:08:481:17:358:1926:57
8:40
#16690
20K
12.43 mi12:37:021:45:498:3128:14
9:05
#17662
Half
13.11 mi12:42:561:51:438:315:54
8:39
#17690
25K
15.53 mi13:04:122:12:598:3421:16
8:46
#17687
30K
18.64 mi13:32:452:41:328:4028:33
9:11
#17750
20M
20.00 mi13:45:312:54:188:4312:46
9:24
#17809
21M
21.00 mi13:55:333:04:208:4710:02
10:02
#17851
35K
21.75 mi14:01:473:10:348:466:14
8:20
#17703
23M
23.00 mi14:13:003:21:478:4611:13
8:58
#17604
24M
24.00 mi14:21:453:30:328:468:45
8:45
#17534
40K
24.85 mi14:29:283:38:158:477:43
9:02
#17492
25.2M
25.20 mi14:32:463:41:338:483:18
9:34
#17459
Finish
26.22 mi14:41:243:50:118:478:38
8:28
#17380
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi150034645464518861(Top 71%)7018(Top 61%)7018(Top 374%)
10K6.21 mi3.10 mi15455-4524941-2964941-29615992(Top 60%)5273(Top 46%)5273(Top 281%)
15K9.32 mi3.11 mi16690-12355724-7835724-78318861(Top 71%)7018(Top 61%)7018(Top 374%)
20K12.43 mi3.11 mi17662-9726318-5946318-59420084(Top 75%)7713(Top 68%)7713(Top 411%)
Half13.11 mi0.68 mi17690-286341-236341-2318628(Top 70%)6842(Top 60%)6842(Top 364%)
25K15.53 mi2.42 mi17687+36344-36344-317793(Top 67%)6454(Top 57%)6454(Top 344%)
30K18.64 mi3.11 mi17750-636405-616405-6118116(Top 68%)6714(Top 59%)6714(Top 358%)
20M20.00 mi1.36 mi17809-596465-606465-6018443(Top 69%)6991(Top 61%)6991(Top 372%)
21M21.00 mi1.00 mi17851-426501-366501-3618153(Top 68%)6846(Top 60%)6846(Top 365%)
35K21.75 mi0.75 mi17703+1486429+726429+7214361(Top 54%)4778(Top 42%)4778(Top 254%)
23M23.00 mi1.25 mi17604+996380+496380+4915866(Top 60%)5666(Top 50%)5666(Top 302%)
24M24.00 mi1.00 mi17534+706351+296351+2915965(Top 60%)5793(Top 51%)5793(Top 308%)
40K24.85 mi0.85 mi17492+426339+126339+1216313(Top 61%)6038(Top 53%)6038(Top 322%)
25.2M25.20 mi0.35 mi17459+336329+106329+1015586(Top 59%)5647(Top 49%)5647(Top 301%)
Finish26.22 mi1.02 mi17380+796295+346295+3415281(Top 57%)5424(Top 47%)5424(Top 289%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18861

Females

7018

F40-44

7018

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

15992

Females

5273

F40-44

5273

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18861

Females

7018

F40-44

7018

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

20084

Females

7713

F40-44

7713

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18628

Females

6842

F40-44

6842

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17793

Females

6454

F40-44

6454

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

18116

Females

6714

F40-44

6714

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18443

Females

6991

F40-44

6991

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18153

Females

6846

F40-44

6846

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14361

Females

4778

F40-44

4778

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

15866

Females

5666

F40-44

5666

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

15965

Females

5793

F40-44

5793

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16313

Females

6038

F40-44

6038

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15586

Females

5647

F40-44

5647

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15281

Females

5424

F40-44

5424

Passing Analysis

Category:
Athletes Passed
1235
Passed By
3612
Net Change
-2377
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15003
5K → 10K132584-452#15003#15455
10K → 15K161251-1235#15455#16690
15K → 20K301002-972#16690#17662
20K → Half2149-28#17662#17690
Half → 25K121118+3#17690#17687
25K → 30K155218-63#17687#17750
30K → 20M75134-59#17750#17809
20M → 21M69111-42#17809#17851
21M → 35K1491+148#17851#17703
35K → 23M13435+99#17703#17604
23M → 24M9929+70#17604#17534
24M → 40K8038+42#17534#17492
40K → 25.2M5118+33#17492#17459
25.2M → Finish10324+79#17459#17380
TOTALS12353612-2377
📊

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