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BOSTON MARATHON 2023

Natalie Baltierra

Bib: 13285•F

OR

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

Start
0:00:00
Race begins
5K· 3.11 mi
23:53
Rank: #11353
Start → 5K
23:53 | 7:41/mi
10K· 6.21 mi
47:16
Rank: #10983 (+370)
5K → 10K
23:23 | 7:32/mi
15K· 9.32 mi
1:10:31
Rank: #10634 (+349)
10K → 15K
23:15 | 7:29/mi
20K· 12.43 mi
1:34:01
Rank: #10401 (+233)
15K → 20K
23:30 | 7:34/mi
Half· 13.11 mi
1:39:04
Rank: #10344 (+57)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:57:54
Rank: #10408 (-64)
Half → 25K
18:50 | 7:46/mi
30K· 18.64 mi
2:23:10
Rank: #10609 (-201)
25K → 30K
25:16 | 8:08/mi
20M
2:34:30
Rank: #10742 (-133)
30K → 20M
11:20 | 8:20/mi
21M
2:44:14
Rank: #11173 (-431)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
2:51:01
Rank: #11513 (-340)
21M → 35K
6:47 | 9:04/mi
23M
3:03:58
Rank: #12445 (-932)
35K → 23M
12:57 | 10:21/mi
24M
3:13:14
Rank: #12778 (-333)
23M → 24M
9:16 | 9:16/mi
40K· 24.85 mi
3:21:37
Rank: #13090 (-312)
24M → 40K
8:23 | 9:48/mi
25.2M
3:25:53
Rank: #13415 (-325)
40K → 25.2M
4:16 | 12:22/mi
Finish· 26.22 mi
3:35:55
Rank: #13879 (-464)
25.2M → Finish
10:02 | 9:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:04
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:56:51
Pace8:55 /mi
📊Positive Split: 18.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4623:537:4123:53
7:41
-
10K
6.21 mi11:15:0947:167:3623:23
7:32
-0:09
15K
9.32 mi11:38:241:10:317:3423:15
7:29
-0:03
20K
12.43 mi12:01:541:34:017:3423:30
7:34
+0:05
Half
13.11 mi12:06:571:39:047:335:03
7:24
-0:10
25K
15.53 mi12:25:471:57:547:3518:50
7:46
+0:22
30K
18.64 mi12:51:032:23:107:4125:16
8:08
+0:22
20M
20.00 mi13:02:232:34:307:4311:20
8:20
+0:12
21M
21.00 mi13:12:072:44:147:499:44
9:44
+1:24
35K
21.75 mi13:18:542:51:017:526:47
9:04
-0:40
23M
23.00 mi13:31:513:03:588:0012:57
10:21
+1:17
24M
24.00 mi13:41:073:13:148:039:16
9:16
-1:05
40K
24.85 mi13:49:303:21:378:078:23
9:48
+0:32
25.2M
25.20 mi13:53:463:25:538:104:16
12:22
+2:34
Finish
26.22 mi14:03:483:35:558:1410:02
9:51
-2:31

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

7:24 /mi

Average Pace

8:14 /mi

Slowest Pace

12:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:11

35% of race

Time at Steady Pace

1:19:19

37% of race

Time at Slower Pace

1:01:25

28% 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 mi10:51:4623:537:4123:53
7:41
#11353
10K
6.21 mi11:15:0947:167:3623:23
7:32
#10983
15K
9.32 mi11:38:241:10:317:3423:15
7:29
#10634
20K
12.43 mi12:01:541:34:017:3423:30
7:34
#10401
Half
13.11 mi12:06:571:39:047:335:03
7:24
#10344
25K
15.53 mi12:25:471:57:547:3518:50
7:46
#10408
30K
18.64 mi12:51:032:23:107:4125:16
8:08
#10609
20M
20.00 mi13:02:232:34:307:4311:20
8:20
#10742
21M
21.00 mi13:12:072:44:147:499:44
9:44
#11173
35K
21.75 mi13:18:542:51:017:526:47
9:04
#11513
23M
23.00 mi13:31:513:03:588:0012:57
10:21
#12445
24M
24.00 mi13:41:073:13:148:039:16
9:16
#12778
40K
24.85 mi13:49:303:21:378:078:23
9:48
#13090
25.2M
25.20 mi13:53:463:25:538:104:16
12:22
#13415
Finish
26.22 mi14:03:483:35:558:1410:02
9:51
#13879
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi113532518251810061(Top 38%)1874(Top 16%)1874(Top 38%)
10K6.21 mi3.10 mi10983+3702319+1992319+19910691(Top 40%)2155(Top 19%)2155(Top 44%)
15K9.32 mi3.11 mi10634+3492134+1852134+18510061(Top 38%)1874(Top 16%)1874(Top 38%)
20K12.43 mi3.11 mi10401+2332025+1092025+1099828(Top 37%)1838(Top 16%)1838(Top 38%)
Half13.11 mi0.68 mi10344+571999+261999+269518(Top 36%)1698(Top 15%)1698(Top 35%)
25K15.53 mi2.42 mi10408-642051-522051-5210872(Top 41%)2424(Top 21%)2424(Top 50%)
30K18.64 mi3.11 mi10609-2012211-1602211-16011897(Top 45%)3128(Top 27%)3128(Top 64%)
20M20.00 mi1.36 mi10742-1332304-932304-9312642(Top 47%)3662(Top 32%)3662(Top 75%)
21M21.00 mi1.00 mi11173-4312548-2442548-24416980(Top 64%)6173(Top 54%)6173(Top 126%)
35K21.75 mi0.75 mi11513-3402756-2082756-20818166(Top 68%)6918(Top 61%)6918(Top 142%)
23M23.00 mi1.25 mi12445-9323296-5403296-54020929(Top 79%)8484(Top 74%)8484(Top 174%)
24M24.00 mi1.00 mi12778-3333521-2253521-22518334(Top 69%)7067(Top 62%)7067(Top 145%)
40K24.85 mi0.85 mi13090-3123727-2063727-20619404(Top 73%)7711(Top 68%)7711(Top 158%)
25.2M25.20 mi0.35 mi13415-3253924-1973924-19723093(Top 87%)9709(Top 85%)9709(Top 199%)
Finish26.22 mi1.02 mi13879-4644219-2954219-29521303(Top 80%)8714(Top 76%)8714(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10061

Females

1874

F18-39

1874

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

10691

Females

2155

F18-39

2155

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10061

Females

1874

F18-39

1874

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9828

Females

1838

F18-39

1838

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9518

Females

1698

F18-39

1698

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10872

Females

2424

F18-39

2424

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

11897

Females

3128

F18-39

3128

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

12642

Females

3662

F18-39

3662

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

16980

Females

6173

F18-39

6173

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

18166

Females

6918

F18-39

6918

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

20929

Females

8484

F18-39

8484

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

18334

Females

7067

F18-39

7067

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19404

Females

7711

F18-39

7711

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23093

Females

9709

F18-39

9709

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

21303

Females

8714

F18-39

8714

Passing Analysis

Category:
Athletes Passed
1627*
Passed By
4153
Net Change
-2526
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11353
5K → 10K526156+370#11353#10983
10K → 15K40051+349#10983#10634
15K → 20K28451+233#10634#10401
20K → Half6811+57#10401#10344
Half → 25K123187-64#10344#10408
25K → 30K109310-201#10408#10609
30K → 20M43*176-133#10609#10742
20M → 21M13444-431#10742#11173
21M → 35K6346-340#11173#11513
35K → 23M7939-932#11513#12445
23M → 24M18351-333#12445#12778
24M → 40K16328-312#12778#13090
40K → 25.2M6331-325#13090#13415
25.2M → Finish8472-464#13415#13879
TOTALS1627*4153-2526

* 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