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BOSTON MARATHON 2023

Christine Stead

Bib: 21942•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 (F50-54)
#0 / 1207
Top 35%
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
8:21/mi
25:57
↑ 97↓ 3451.5%
10K· 6.21 mi
8:19/mi
51:48
↑ 79↓ 1380.4%
15K· 9.32 mi
8:20/mi
1:17:42
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:44:09
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:49:54
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
2:10:44
↑ 66↓ 880.2%
30K· 18.64 mi
9:00/mi
2:38:43
↑ 181↓ 1480.2%
20M
9:11/mi
2:51:12
↑ 64↓ 500.2%
21M
9:52/mi
3:01:04
↑ 106↓ 241.6%
35K· 21.75 mi
8:31/mi
3:07:26
↑ 17↓ 861.7%
23M
8:56/mi
3:18:37
↑ 23↓ 630.6%
24M
8:49/mi
3:27:26
↓ 821.3%
40K· 24.85 mi
8:58/mi
3:35:06
↓ 200.3%
25.2M
9:34/mi
3:38:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:44/mi
3:47:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:54
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time1:57:24
Pace8:57 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0525:578:2125:57
8:21
-
10K
6.21 mi11:44:5651:488:2025:51
8:19
-0:02
15K
9.32 mi12:10:501:17:428:2025:54
8:20
+0:01
20K
12.43 mi12:37:171:44:098:2326:27
8:31
+0:11
Half
13.11 mi12:43:021:49:548:235:45
8:26
-0:05
25K
15.53 mi13:03:522:10:448:2520:50
8:36
+0:10
30K
18.64 mi13:31:512:38:438:3127:59
9:00
+0:24
20M
20.00 mi13:44:202:51:128:3412:29
9:11
+0:11
21M
21.00 mi13:54:123:01:048:379:52
9:52
+0:41
35K
21.75 mi14:00:343:07:268:376:22
8:31
-1:21
23M
23.00 mi14:11:453:18:378:3811:11
8:56
+0:25
24M
24.00 mi14:20:343:27:268:398:49
8:49
-0:07
40K
24.85 mi14:28:143:35:068:397:40
8:58
+0:09
25.2M
25.20 mi14:31:323:38:248:403:18
9:34
+0:36
Finish
26.22 mi14:40:263:47:188:418:54
8:44
-0:50

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

8:19 /mi

Average Pace

8:41 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:39

89% of race

Time at Steady Pace

15:47

7% of race

Time at Slower Pace

9:52

4% 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 mi11:19:0525:578:2125:57
8:21
#16533
10K
6.21 mi11:44:5651:488:2025:51
8:19
#16760
15K
9.32 mi12:10:501:17:428:2025:54
8:20
#16763
20K
12.43 mi12:37:171:44:098:2326:27
8:31
#16803
Half
13.11 mi12:43:021:49:548:235:45
8:26
#16837
25K
15.53 mi13:03:522:10:448:2520:50
8:36
#16835
30K
18.64 mi13:31:512:38:438:3127:59
9:00
#16853
20M
20.00 mi13:44:202:51:128:3412:29
9:11
#16902
21M
21.00 mi13:54:123:01:048:379:52
9:52
#16927
35K
21.75 mi14:00:343:07:268:376:22
8:31
#16871
23M
23.00 mi14:11:453:18:378:3811:11
8:56
#16799
24M
24.00 mi14:20:343:27:268:398:49
8:49
#16765
40K
24.85 mi14:28:143:35:068:397:40
8:58
#16735
25.2M
25.20 mi14:31:323:38:248:403:18
9:34
#16699
Finish
26.22 mi14:40:263:47:188:418:54
8:44
#16700
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi165335626562616777(Top 63%)5778(Top 51%)5778(Top 479%)
10K6.21 mi3.10 mi16760-2275752-1265752-12617078(Top 64%)5919(Top 52%)5919(Top 490%)
15K9.32 mi3.11 mi16763-35775-235775-2316777(Top 63%)5778(Top 51%)5778(Top 479%)
20K12.43 mi3.11 mi16803-405807-325807-3216952(Top 64%)5899(Top 52%)5899(Top 489%)
Half13.11 mi0.68 mi16837-345825-185825-1817337(Top 65%)6083(Top 53%)6083(Top 504%)
25K15.53 mi2.42 mi16835+25855-305855-3016782(Top 63%)5882(Top 51%)5882(Top 487%)
30K18.64 mi3.11 mi16853-185871-165871-1617205(Top 65%)6188(Top 54%)6188(Top 513%)
20M20.00 mi1.36 mi16902-495915-445915-4417488(Top 66%)6441(Top 56%)6441(Top 534%)
21M21.00 mi1.00 mi16927-255944-295944-2917520(Top 66%)6488(Top 57%)6488(Top 538%)
35K21.75 mi0.75 mi16871+565917+275917+2715425(Top 58%)5370(Top 47%)5370(Top 445%)
23M23.00 mi1.25 mi16799+725901+165901+1615718(Top 59%)5587(Top 49%)5587(Top 463%)
24M24.00 mi1.00 mi16765+345903-25903-216313(Top 61%)5976(Top 52%)5976(Top 495%)
40K24.85 mi0.85 mi16735+305899+45899+415993(Top 60%)5851(Top 51%)5851(Top 485%)
25.2M25.20 mi0.35 mi16699+365890+95890+915576(Top 59%)5637(Top 49%)5637(Top 467%)
Finish26.22 mi1.02 mi16700-15900-105900-1016687(Top 63%)6200(Top 54%)6200(Top 514%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

16777

Females

5778

F50-54

5778

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

17078

Females

5919

F50-54

5919

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

16777

Females

5778

F50-54

5778

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16952

Females

5899

F50-54

5899

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

17337

Females

6083

F50-54

6083

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16782

Females

5882

F50-54

5882

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17205

Females

6188

F50-54

6188

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

17488

Females

6441

F50-54

6441

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17520

Females

6488

F50-54

6488

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

15425

Females

5370

F50-54

5370

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15718

Females

5587

F50-54

5587

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16313

Females

5976

F50-54

5976

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15993

Females

5851

F50-54

5851

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15576

Females

5637

F50-54

5637

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16687

Females

6200

F50-54

6200

Passing Analysis

Category:
Athletes Passed
1453
Passed By
1620
Net Change
-167
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16533
5K → 10K208435-227#16533#16760
10K → 15K200203-3#16760#16763
15K → 20K165205-40#16763#16803
20K → Half1044-34#16803#16837
Half → 25K122120+2#16837#16835
25K → 30K161179-18#16835#16853
30K → 20M65114-49#16853#16902
20M → 21M7095-25#16902#16927
21M → 35K7519+56#16927#16871
35K → 23M11745+72#16871#16799
23M → 24M8450+34#16799#16765
24M → 40K7040+30#16765#16735
40K → 25.2M426+36#16735#16699
25.2M → Finish6465-1#16699#16700
TOTALS14531620-167
📊

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