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BOSTON MARATHON 2023

Sandra Ascencio Angulo

Bib: 17441•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 20%
Division (F18-39)
#0 / 4884
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:43
Rank: #10870
Start → 5K
23:43 | 7:38/mi
10K· 6.21 mi
46:32
Rank: #9925 (+945)
5K → 10K
22:49 | 7:21/mi
15K· 9.32 mi
1:09:33
Rank: #9704 (+221)
10K → 15K
23:01 | 7:25/mi
20K· 12.43 mi
1:32:53
Rank: #9607 (+97)
15K → 20K
23:20 | 7:31/mi
Half· 13.11 mi
1:37:47
Rank: #9506 (+101)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:55:58
Rank: #9357 (+149)
Half → 25K
18:11 | 7:30/mi
30K· 18.64 mi
2:20:13
Rank: #9336 (+21)
25K → 30K
24:15 | 7:48/mi
20M
2:32:39
Rank: #10003 (-667)
30K → 20M
12:26 | 9:09/mi
21M
2:41:07
Rank: #9998 (+5)
20M → 21M
8:28 | 8:28/mi
35K· 21.75 mi
2:46:57
Rank: #9999
21M → 35K
5:50 | 7:48/mi
23M
2:57:14
Rank: #10050
35K → 23M
10:17 | 8:13/mi
24M
3:05:26
Rank: #10150 (-100)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:12:44
Rank: #10272 (-122)
24M → 40K
7:18 | 8:32/mi
25.2M
3:15:54
Rank: #10321 (-49)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:24:22
Rank: #10472 (-151)
25.2M → Finish
8:28 | 8:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:47
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:46:35
Pace8:08 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3523:437:3823:43
7:38
-
10K
6.21 mi11:37:2446:327:2922:49
7:21
-0:17
15K
9.32 mi12:00:251:09:337:2823:01
7:25
+0:04
20K
12.43 mi12:23:451:32:537:2823:20
7:31
+0:06
Half
13.11 mi12:28:391:37:477:284:54
7:11
-0:20
25K
15.53 mi12:46:501:55:587:2818:11
7:30
+0:19
30K
18.64 mi13:11:052:20:137:3124:15
7:48
+0:18
20M
20.00 mi13:23:312:32:397:3812:26
9:09
+1:21
21M
21.00 mi13:31:592:41:077:408:28
8:28
-0:41
35K
21.75 mi13:37:492:46:577:415:50
7:48
-0:40
23M
23.00 mi13:48:062:57:147:4210:17
8:13
+0:25
24M
24.00 mi13:56:183:05:267:448:12
8:12
-0:01
40K
24.85 mi14:03:363:12:447:457:18
8:32
+0:20
25.2M
25.20 mi14:06:463:15:547:463:10
9:11
+0:39
Finish
26.22 mi14:15:143:24:227:488:28
8:19
-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

7:11 /mi

Average Pace

7:48 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

50:44

25% of race

Time at Steady Pace

1:35:19

47% of race

Time at Slower Pace

58:19

29% of race

Average Pace: 7:48 /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 mi11:14:3523:437:3823:43
7:38
#10870
10K
6.21 mi11:37:2446:327:2922:49
7:21
#9925
15K
9.32 mi12:00:251:09:337:2823:01
7:25
#9704
20K
12.43 mi12:23:451:32:537:2823:20
7:31
#9607
Half
13.11 mi12:28:391:37:477:284:54
7:11
#9506
25K
15.53 mi12:46:501:55:587:2818:11
7:30
#9357
30K
18.64 mi13:11:052:20:137:3124:15
7:48
#9336
20M
20.00 mi13:23:312:32:397:3812:26
9:09
#10003
21M
21.00 mi13:31:592:41:077:408:28
8:28
#9998
35K
21.75 mi13:37:492:46:577:415:50
7:48
#9999
23M
23.00 mi13:48:062:57:147:4210:17
8:13
#10050
24M
24.00 mi13:56:183:05:267:448:12
8:12
#10150
40K
24.85 mi14:03:363:12:447:457:18
8:32
#10272
25.2M
25.20 mi14:06:463:15:547:463:10
9:11
#10321
Finish
26.22 mi14:15:143:24:227:488:28
8:19
#10472
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10870226622669429(Top 35%)1596(Top 14%)1596(Top 33%)
10K6.21 mi3.10 mi9925+9451809+4571809+4579201(Top 35%)1500(Top 13%)1500(Top 31%)
15K9.32 mi3.11 mi9704+2211711+981711+989429(Top 35%)1596(Top 14%)1596(Top 33%)
20K12.43 mi3.11 mi9607+971672+391672+399410(Top 35%)1657(Top 15%)1657(Top 34%)
Half13.11 mi0.68 mi9506+1011632+401632+407823(Top 29%)1043(Top 9%)1043(Top 21%)
25K15.53 mi2.42 mi9357+1491587+451587+458810(Top 33%)1489(Top 13%)1489(Top 30%)
30K18.64 mi3.11 mi9336+211624-371624-379418(Top 35%)1900(Top 17%)1900(Top 39%)
20M20.00 mi1.36 mi10003-6671921-2971921-29717309(Top 65%)6336(Top 55%)6336(Top 130%)
21M21.00 mi1.00 mi9998+51951-301951-3010308(Top 39%)2535(Top 22%)2535(Top 52%)
35K21.75 mi0.75 mi9999-11970-191970-1910662(Top 40%)2696(Top 24%)2696(Top 55%)
23M23.00 mi1.25 mi10050-512019-492019-4911280(Top 42%)3141(Top 27%)3141(Top 64%)
24M24.00 mi1.00 mi10150-1002101-822101-8212601(Top 47%)3901(Top 34%)3901(Top 80%)
40K24.85 mi0.85 mi10272-1222186-852186-8513590(Top 51%)4511(Top 39%)4511(Top 92%)
25.2M25.20 mi0.35 mi10321-492227-412227-4113562(Top 51%)4499(Top 39%)4499(Top 92%)
Finish26.22 mi1.02 mi10472-1512333-1062333-10614161(Top 53%)4822(Top 42%)4822(Top 99%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9429

Females

1596

F18-39

1596

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9201

Females

1500

F18-39

1500

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9429

Females

1596

F18-39

1596

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9410

Females

1657

F18-39

1657

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7823

Females

1043

F18-39

1043

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

8810

Females

1489

F18-39

1489

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9418

Females

1900

F18-39

1900

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17309

Females

6336

F18-39

6336

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10308

Females

2535

F18-39

2535

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

10662

Females

2696

F18-39

2696

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11280

Females

3141

F18-39

3141

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12601

Females

3901

F18-39

3901

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13590

Females

4511

F18-39

4511

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13562

Females

4499

F18-39

4499

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

14161

Females

4822

F18-39

4822

Passing Analysis

Category:
Athletes Passed
2194*
Passed By
1742
Net Change
+450
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10870
5K → 10K977*32+945#10870#9925
10K → 15K30483+221#9925#9704
15K → 20K19598+97#9704#9607
20K → Half1032+101#9607#9506
Half → 25K19344+149#9506#9357
25K → 30K180*159+21#9357#9336
30K → 20M9675-667#9336#10003
20M → 21M9186+5#10003#9998
23M → 24M49148-100#10050#10150
24M → 40K35157-122#10150#10272
40K → 25.2M2473-49#10272#10321
25.2M → Finish34185-151#10321#10472
TOTALS2194*1742+450

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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