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BOSTON MARATHON 2023

Katie Millar

Bib: 15721•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 42%
Division (F45-49)
#0 / 1817
Top 50%
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
8:12/mi
25:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
49:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:07/mi
1:15:04
↑ 67↓ 78
20K· 12.43 mi
8:25/mi
1:41:13
↑ 106↓ 860.1%
Half· 13.11 mi
8:33/mi
1:47:03
↑ 19↓ 370.5%
25K· 15.53 mi
8:41/mi
2:08:07
↑ 66↓ 880.2%
30K· 18.64 mi
8:57/mi
2:35:55
↑ 181↓ 1480.2%
20M
9:13/mi
2:48:26
↑ 64↓ 500.2%
21M
9:51/mi
2:58:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:36/mi
3:04:43
↑ 17↓ 861.7%
23M
9:23/mi
3:16:28
↑ 23↓ 630.6%
24M
9:20/mi
3:25:48
↓ 821.3%
40K· 24.85 mi
9:53/mi
3:34:15
↓ 200.3%
25.2M
10:44/mi
3:37:57
↑ 13↓ 160.2%
Finish· 26.22 mi
9:03/mi
3:47:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:03
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time2:00:07
Pace9:10 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:1025:298:1225:29
8:12
-
10K
6.21 mi11:20:3349:528:0224:23
7:51
-0:21
15K
9.32 mi11:45:451:15:048:0325:12
8:07
+0:16
20K
12.43 mi12:11:541:41:138:0926:09
8:25
+0:18
Half
13.11 mi12:17:441:47:038:105:50
8:33
+0:08
25K
15.53 mi12:38:482:08:078:1521:04
8:41
+0:08
30K
18.64 mi13:06:362:35:558:2227:48
8:57
+0:16
20M
20.00 mi13:19:072:48:268:2512:31
9:13
+0:16
21M
21.00 mi13:28:582:58:178:299:51
9:51
+0:38
35K
21.75 mi13:35:243:04:438:306:26
8:36
-1:15
23M
23.00 mi13:47:093:16:288:3311:45
9:23
+0:47
24M
24.00 mi13:56:293:25:488:359:20
9:20
-0:03
40K
24.85 mi14:04:563:34:158:378:27
9:53
+0:33
25.2M
25.20 mi14:08:383:37:578:393:42
10:44
+0:51
Finish
26.22 mi14:17:513:47:108:409:13
9:03
-1:41

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

7:51 /mi

Average Pace

8:40 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:03

47% of race

Time at Steady Pace

1:17:02

34% of race

Time at Slower Pace

43:05

19% of race

Average Pace: 8:40 /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 mi10:56:1025:298:1225:29
8:12
#15499
10K
6.21 mi11:20:3349:528:0224:23
7:51
#14567
15K
9.32 mi11:45:451:15:048:0325:12
8:07
#14781
20K
12.43 mi12:11:541:41:138:0926:09
8:25
#15215
Half
13.11 mi12:17:441:47:038:105:50
8:33
#15349
25K
15.53 mi12:38:482:08:078:1521:04
8:41
#15672
30K
18.64 mi13:06:362:35:558:2227:48
8:57
#15899
20M
20.00 mi13:19:072:48:268:2512:31
9:13
#16047
21M
21.00 mi13:28:582:58:178:299:51
9:51
#16115
35K
21.75 mi13:35:243:04:438:306:26
8:36
#16096
23M
23.00 mi13:47:093:16:288:3311:45
9:23
#16213
24M
24.00 mi13:56:293:25:488:359:20
9:20
#16352
40K
24.85 mi14:04:563:34:158:378:27
9:53
#16513
25.2M
25.20 mi14:08:383:37:578:393:42
10:44
#16593
Finish
26.22 mi14:17:513:47:108:409:13
9:03
#16662
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi154994967496715258(Top 57%)4832(Top 42%)4832(Top 266%)
10K6.21 mi3.10 mi14567+9324386+5814386+58113570(Top 51%)3780(Top 33%)3780(Top 208%)
15K9.32 mi3.11 mi14781-2144530-1444530-14415258(Top 57%)4832(Top 42%)4832(Top 266%)
20K12.43 mi3.11 mi15215-4344819-2894819-28916359(Top 61%)5564(Top 49%)5564(Top 306%)
Half13.11 mi0.68 mi15349-1344909-904909-9018010(Top 68%)6474(Top 57%)6474(Top 356%)
25K15.53 mi2.42 mi15672-3235133-2245133-22417320(Top 65%)6181(Top 54%)6181(Top 340%)
30K18.64 mi3.11 mi15899-2275315-1825315-18216906(Top 64%)6011(Top 53%)6011(Top 331%)
20M20.00 mi1.36 mi16047-1485423-1085423-10817601(Top 66%)6513(Top 57%)6513(Top 358%)
21M21.00 mi1.00 mi16115-685484-615484-6117453(Top 66%)6455(Top 57%)6455(Top 355%)
35K21.75 mi0.75 mi16096+195493-95493-915887(Top 60%)5622(Top 49%)5622(Top 309%)
23M23.00 mi1.25 mi16213-1175564-715564-7117882(Top 67%)6793(Top 59%)6793(Top 374%)
24M24.00 mi1.00 mi16352-1395660-965660-9618607(Top 70%)7224(Top 63%)7224(Top 398%)
40K24.85 mi0.85 mi16513-1615777-1175777-11719645(Top 74%)7854(Top 69%)7854(Top 432%)
25.2M25.20 mi0.35 mi16593-805826-495826-4919798(Top 74%)7939(Top 70%)7939(Top 437%)
Finish26.22 mi1.02 mi16662-695878-525878-5218192(Top 68%)6999(Top 61%)6999(Top 385%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

15258

Females

4832

F45-49

4832

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13570

Females

3780

F45-49

3780

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

15258

Females

4832

F45-49

4832

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16359

Females

5564

F45-49

5564

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18010

Females

6474

F45-49

6474

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17320

Females

6181

F45-49

6181

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

16906

Females

6011

F45-49

6011

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

17601

Females

6513

F45-49

6513

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17453

Females

6455

F45-49

6455

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

15887

Females

5622

F45-49

5622

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17882

Females

6793

F45-49

6793

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18607

Females

7224

F45-49

7224

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19645

Females

7854

F45-49

7854

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19798

Females

7939

F45-49

7939

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

18192

Females

6999

F45-49

6999

Passing Analysis

Category:
Athletes Passed
1679
Passed By
2842
Net Change
-1163
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15499
5K → 10K98856+932#15499#14567
10K → 15K117331-214#14567#14781
15K → 20K79513-434#14781#15215
20K → Half12146-134#15215#15349
Half → 25K55378-323#15349#15672
25K → 30K104331-227#15672#15899
30K → 20M52200-148#15899#16047
20M → 21M57125-68#16047#16115
21M → 35K6041+19#16115#16096
35K → 23M45162-117#16096#16213
23M → 24M31170-139#16213#16352
24M → 40K32193-161#16352#16513
40K → 25.2M1393-80#16513#16593
25.2M → Finish34103-69#16593#16662
TOTALS16792842-1163
📊

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