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BOSTON MARATHON 2023

Estefanía Basaldúa Olivares

Bib: 13737•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 19%
Division (F18-39)
#0 / 4884
Top 34%
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
7:35/mi
23:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
47:23
↑ 79↓ 1380.4%
15K· 9.32 mi
7:42/mi
1:11:19
↑ 67↓ 78
20K· 12.43 mi
7:49/mi
1:35:37
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:40:54
↑ 19↓ 370.5%
25K· 15.53 mi
7:48/mi
1:59:49
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:24:23
↑ 181↓ 1480.2%
20M
7:52/mi
2:35:05
↑ 64↓ 500.2%
21M
8:17/mi
2:43:22
↑ 106↓ 241.6%
35K· 21.75 mi
7:37/mi
2:49:04
↑ 17↓ 861.7%
23M
8:01/mi
2:59:06
↑ 23↓ 630.6%
24M
7:37/mi
3:06:43
↓ 821.3%
40K· 24.85 mi
7:42/mi
3:13:18
↓ 200.3%
25.2M
8:07/mi
3:16:06
↑ 13↓ 160.2%
Finish· 26.22 mi
7:19/mi
3:23:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:54
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:42:39
Pace7:50 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5923:347:3523:34
7:35
-
10K
6.21 mi11:15:4847:237:3823:49
7:40
+0:05
15K
9.32 mi11:39:441:11:197:3923:56
7:42
+0:02
20K
12.43 mi12:04:021:35:377:4224:18
7:49
+0:07
Half
13.11 mi12:09:191:40:547:425:17
7:45
-0:04
25K
15.53 mi12:28:141:59:497:4318:55
7:48
+0:03
30K
18.64 mi12:52:482:24:237:4524:34
7:54
+0:06
20M
20.00 mi13:03:302:35:057:4510:42
7:52
-0:02
21M
21.00 mi13:11:472:43:227:478:17
8:17
+0:25
35K
21.75 mi13:17:292:49:047:465:42
7:37
-0:40
23M
23.00 mi13:27:312:59:067:4710:02
8:01
+0:24
24M
24.00 mi13:35:083:06:437:477:37
7:37
-0:24
40K
24.85 mi13:41:433:13:187:476:35
7:42
+0:05
25.2M
25.20 mi13:44:313:16:067:472:48
8:07
+0:25
Finish
26.22 mi13:51:583:23:337:467:27
7:19
-0:48

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

7:19 /mi

Average Pace

7:46 /mi

Slowest Pace

8:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:28

95% of race

Time at Steady Pace

11:05

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:46 /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 mi10:51:5923:347:3523:34
7:35
#10416
10K
6.21 mi11:15:4847:237:3823:49
7:40
#11152
15K
9.32 mi11:39:441:11:197:3923:56
7:42
#11371
20K
12.43 mi12:04:021:35:377:4224:18
7:49
#11486
Half
13.11 mi12:09:191:40:547:425:17
7:45
#11508
25K
15.53 mi12:28:141:59:497:4318:55
7:48
#11410
30K
18.64 mi12:52:482:24:237:4524:34
7:54
#11137
20M
20.00 mi13:03:302:35:057:4510:42
7:52
#10968
21M
21.00 mi13:11:472:43:227:478:17
8:17
#10837
35K
21.75 mi13:17:292:49:047:465:42
7:37
#10769
23M
23.00 mi13:27:312:59:067:4710:02
8:01
#10695
24M
24.00 mi13:35:083:06:437:477:37
7:37
#10589
40K
24.85 mi13:41:433:13:187:476:35
7:42
#10459
25.2M
25.20 mi13:44:313:16:067:472:48
8:07
#10383
Finish
26.22 mi13:51:583:23:337:467:27
7:19
#10215
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi104162046204611871(Top 45%)2828(Top 25%)2828(Top 58%)
10K6.21 mi3.10 mi11152-7362407-3612407-36111949(Top 45%)2836(Top 25%)2836(Top 58%)
15K9.32 mi3.11 mi11371-2192528-1212528-12111871(Top 45%)2828(Top 25%)2828(Top 58%)
20K12.43 mi3.11 mi11486-1152608-802608-8011925(Top 45%)2922(Top 26%)2922(Top 60%)
Half13.11 mi0.68 mi11508-222630-222630-2212248(Top 46%)3040(Top 27%)3040(Top 62%)
25K15.53 mi2.42 mi11410+982598+322598+3211108(Top 42%)2534(Top 22%)2534(Top 52%)
30K18.64 mi3.11 mi11137+2732484+1142484+11410202(Top 38%)2255(Top 20%)2255(Top 46%)
20M20.00 mi1.36 mi10968+1692415+692415+699421(Top 35%)1989(Top 17%)1989(Top 41%)
21M21.00 mi1.00 mi10837+1312374+412374+419166(Top 34%)1998(Top 17%)1998(Top 41%)
35K21.75 mi0.75 mi10769+682359+152359+159440(Top 35%)2117(Top 19%)2117(Top 43%)
23M23.00 mi1.25 mi10695+742354+52354+59853(Top 37%)2437(Top 21%)2437(Top 50%)
24M24.00 mi1.00 mi10589+1062322+322322+328552(Top 32%)1904(Top 17%)1904(Top 39%)
40K24.85 mi0.85 mi10459+1302290+322290+328021(Top 30%)1759(Top 15%)1759(Top 36%)
25.2M25.20 mi0.35 mi10383+762264+262264+267311(Top 27%)1555(Top 14%)1555(Top 32%)
Finish26.22 mi1.02 mi10215+1682203+612203+617234(Top 27%)1527(Top 13%)1527(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

11871

Females

2828

F18-39

2828

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11949

Females

2836

F18-39

2836

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

11871

Females

2828

F18-39

2828

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

11925

Females

2922

F18-39

2922

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12248

Females

3040

F18-39

3040

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11108

Females

2534

F18-39

2534

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10202

Females

2255

F18-39

2255

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

9421

Females

1989

F18-39

1989

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9166

Females

1998

F18-39

1998

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9440

Females

2117

F18-39

2117

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

9853

Females

2437

F18-39

2437

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

8552

Females

1904

F18-39

1904

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8021

Females

1759

F18-39

1759

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7311

Females

1555

F18-39

1555

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7234

Females

1527

F18-39

1527

Passing Analysis

Category:
Athletes Passed
1927*
Passed By
1726
Net Change
+201
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10416
5K → 10K78814-736#10416#11152
10K → 15K119338-219#11152#11371
15K → 20K120235-115#11371#11486
20K → Half2547-22#11486#11508
Half → 25K16466+98#11508#11410
25K → 30K33663+273#11410#11137
30K → 20M187*18+169#11137#10968
20M → 21M15625+131#10968#10837
21M → 35K8113+68#10837#10769
35K → 23M12854+74#10769#10695
23M → 24M12822+106#10695#10589
24M → 40K14818+130#10589#10459
40K → 25.2M804+76#10459#10383
25.2M → Finish1779+168#10383#10215
TOTALS1927*1726+201

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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