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BOSTON MARATHON 2023

Natalie Callister

Bib: 977•F

AZ

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Female)
#0 / 11423
Top 1.0%
Division (F18-39)
#0 / 4884
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:21
Rank: #541
Start → 5K
18:21 | 5:54/mi
10K· 6.21 mi
36:30
Rank: #513 (+28)
5K → 10K
18:09 | 5:51/mi
15K· 9.32 mi
54:48
Rank: #509 (+4)
10K → 15K
18:18 | 5:53/mi
20K· 12.43 mi
1:13:42
Rank: #549 (-40)
15K → 20K
18:54 | 6:05/mi
Half· 13.11 mi
1:17:50
Rank: #555 (-6)
20K → Half
4:08 | 6:03/mi
25K· 15.53 mi
1:33:39
Rank: #705 (-150)
Half → 25K
15:49 | 6:31/mi
30K· 18.64 mi
1:57:18
Rank: #1316 (-611)
25K → 30K
23:39 | 7:37/mi
20M
2:06:39
Rank: #1408 (-92)
30K → 20M
9:21 | 6:53/mi
21M
2:14:47
Rank: #1640 (-232)
20M → 21M
8:08 | 8:08/mi
35K· 21.75 mi
2:20:18
Rank: #1784 (-144)
21M → 35K
5:31 | 7:22/mi
23M
2:29:41
Rank: #1977 (-193)
35K → 23M
9:23 | 7:30/mi
24M
2:37:22
Rank: #2196 (-219)
23M → 24M
7:41 | 7:41/mi
40K· 24.85 mi
2:43:30
Rank: #2259 (-63)
24M → 40K
6:08 | 7:10/mi
25.2M
2:46:51
Rank: #2383 (-124)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
2:54:06
Rank: #2495 (-112)
25.2M → Finish
7:15 | 7:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:50
Pace5:56 /mi
2nd Half
Distance13.11 mi
Time1:36:16
Pace7:21 /mi
📊Positive Split: 23.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2918:215:5418:21
5:54
-
10K
6.21 mi10:36:3836:305:5218:09
5:51
-0:03
15K
9.32 mi10:54:5654:485:5318:18
5:53
+0:02
20K
12.43 mi11:13:501:13:425:5618:54
6:05
+0:12
Half
13.11 mi11:17:581:17:505:564:08
6:03
-0:02
25K
15.53 mi11:33:471:33:396:0215:49
6:31
+0:28
30K
18.64 mi11:57:261:57:186:1823:39
7:37
+1:06
20M
20.00 mi12:06:472:06:396:209:21
6:53
-0:44
21M
21.00 mi12:14:552:14:476:258:08
8:08
+1:15
35K
21.75 mi12:20:262:20:186:275:31
7:22
-0:46
23M
23.00 mi12:29:492:29:416:309:23
7:30
+0:08
24M
24.00 mi12:37:302:37:226:337:41
7:41
+0:11
40K
24.85 mi12:43:382:43:306:356:08
7:10
-0:31
25.2M
25.20 mi12:46:592:46:516:373:21
9:43
+2:33
Finish
26.22 mi12:54:142:54:066:397:15
7:07
-2:36

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

5:51 /mi

Average Pace

6:39 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:39

54% of race

Time at Steady Pace

1:01:17

35% of race

Time at Slower Pace

19:10

11% of race

Average Pace: 6:38 /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 mi10:18:2918:215:5418:21
5:54
#541
10K
6.21 mi10:36:3836:305:5218:09
5:51
#513
15K
9.32 mi10:54:5654:485:5318:18
5:53
#509
20K
12.43 mi11:13:501:13:425:5618:54
6:05
#549
Half
13.11 mi11:17:581:17:505:564:08
6:03
#555
25K
15.53 mi11:33:471:33:396:0215:49
6:31
#705
30K
18.64 mi11:57:261:57:186:1823:39
7:37
#1316
20M
20.00 mi12:06:472:06:396:209:21
6:53
#1408
21M
21.00 mi12:14:552:14:476:258:08
8:08
#1640
35K
21.75 mi12:20:262:20:186:275:31
7:22
#1784
23M
23.00 mi12:29:492:29:416:309:23
7:30
#1977
24M
24.00 mi12:37:302:37:226:337:41
7:41
#2196
40K
24.85 mi12:43:382:43:306:356:08
7:10
#2259
25.2M
25.20 mi12:46:592:46:516:373:21
9:43
#2383
Finish
26.22 mi12:54:142:54:066:397:15
7:07
#2495
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi5414242499(Top 2%)41(Top 0.4%)41(Top 0.8%)
10K6.21 mi3.10 mi513+2841+141+1497(Top 2%)40(Top 0.4%)40(Top 0.8%)
15K9.32 mi3.11 mi509+44141499(Top 2%)41(Top 0.4%)41(Top 0.8%)
20K12.43 mi3.11 mi549-404141748(Top 3%)42(Top 0.4%)42(Top 0.9%)
Half13.11 mi0.68 mi555-64141938(Top 4%)45(Top 0.4%)45(Top 0.9%)
25K15.53 mi2.42 mi705-15042-142-12308(Top 9%)95(Top 0.8%)95(Top 2%)
30K18.64 mi3.11 mi1316-61159-1759-178014(Top 30%)1308(Top 11%)1308(Top 27%)
20M20.00 mi1.36 mi1408-9262-362-33329(Top 13%)209(Top 2%)209(Top 4%)
21M21.00 mi1.00 mi1640-23271-971-98200(Top 31%)1596(Top 14%)1596(Top 33%)
35K21.75 mi0.75 mi1784-14475-475-47657(Top 29%)1351(Top 12%)1351(Top 28%)
23M23.00 mi1.25 mi1977-19380-580-56397(Top 24%)947(Top 8%)947(Top 19%)
24M24.00 mi1.00 mi2196-21988-888-88983(Top 34%)2077(Top 18%)2077(Top 43%)
40K24.85 mi0.85 mi2259-6392-492-44767(Top 18%)571(Top 5%)571(Top 12%)
25.2M25.20 mi0.35 mi2383-124102-10102-1016170(Top 61%)5937(Top 52%)5937(Top 122%)
Finish26.22 mi1.02 mi2495-112112-10112-105913(Top 22%)1032(Top 9%)1032(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

499

Females

41

F18-39

41

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

497

Females

40

F18-39

40

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

499

Females

41

F18-39

41

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

748

Females

42

F18-39

42

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

938

Females

45

F18-39

45

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2308

Females

95

F18-39

95

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8014

Females

1308

F18-39

1308

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3329

Females

209

F18-39

209

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8200

Females

1596

F18-39

1596

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7657

Females

1351

F18-39

1351

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6397

Females

947

F18-39

947

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

8983

Females

2077

F18-39

2077

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4767

Females

571

F18-39

571

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16170

Females

5937

F18-39

5937

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

5913

Females

1032

F18-39

1032

Passing Analysis

Category:
Athletes Passed
114
Passed By
2068
Net Change
-1954
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#541
5K → 10K5123+28#541#513
10K → 15K1511+4#513#509
15K → 20K1050-40#509#549
20K → Half06-6#549#555
Half → 25K4154-150#555#705
25K → 30K0611-611#705#1316
30K → 20M597-92#1316#1408
20M → 21M0232-232#1408#1640
21M → 35K3147-144#1640#1784
35K → 23M7200-193#1784#1977
23M → 24M0219-219#1977#2196
24M → 40K1073-63#2196#2259
40K → 25.2M1125-124#2259#2383
25.2M → Finish8120-112#2383#2495
TOTALS1142068-1954
📊

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