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BOSTON MARATHON 2023

Margaret Thiessen

Bib: 11754•F

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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:19
Rank: #9689
Start → 5K
23:19 | 7:30/mi
10K· 6.21 mi
46:38
Rank: #10080 (-391)
5K → 10K
23:19 | 7:30/mi
15K· 9.32 mi
1:10:02
Rank: #10187 (-107)
10K → 15K
23:24 | 7:32/mi
20K· 12.43 mi
1:33:25
Rank: #9990 (+197)
15K → 20K
23:23 | 7:32/mi
Half· 13.11 mi
1:38:37
Rank: #10026 (-36)
20K → Half
5:12 | 7:37/mi
25K· 15.53 mi
1:57:04
Rank: #9937 (+89)
Half → 25K
18:27 | 7:37/mi
30K· 18.64 mi
2:21:25
Rank: #9876 (+61)
25K → 30K
24:21 | 7:50/mi
20M
2:32:08
Rank: #9787 (+89)
30K → 20M
10:43 | 7:53/mi
21M
2:40:41
Rank: #9818 (-31)
20M → 21M
8:33 | 8:33/mi
35K· 21.75 mi
2:46:38
Rank: #9898 (-80)
21M → 35K
5:57 | 7:57/mi
23M
2:56:33
Rank: #9816 (+82)
35K → 23M
9:55 | 7:55/mi
24M
3:04:02
Rank: #9679 (+137)
23M → 24M
7:29 | 7:29/mi
40K· 24.85 mi
3:10:37
Rank: #9580 (+99)
24M → 40K
6:35 | 7:42/mi
25.2M
3:13:33
Rank: #9557 (+23)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:21:17
Rank: #9525 (+32)
25.2M → Finish
7:44 | 7:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:37
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:42:40
Pace7:50 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:0223:197:3023:19
7:30
-
10K
6.21 mi11:13:2146:387:3023:19
7:30
0:00
15K
9.32 mi11:36:451:10:027:3123:24
7:32
+0:02
20K
12.43 mi12:00:081:33:257:3123:23
7:32
0:00
Half
13.11 mi12:05:201:38:377:315:12
7:37
+0:05
25K
15.53 mi12:23:471:57:047:3218:27
7:37
0:00
30K
18.64 mi12:48:082:21:257:3524:21
7:50
+0:13
20M
20.00 mi12:58:512:32:087:3610:43
7:53
+0:03
21M
21.00 mi13:07:242:40:417:398:33
8:33
+0:40
35K
21.75 mi13:13:212:46:387:405:57
7:57
-0:36
23M
23.00 mi13:23:162:56:337:419:55
7:55
-0:02
24M
24.00 mi13:30:453:04:027:407:29
7:29
-0:26
40K
24.85 mi13:37:203:10:377:406:35
7:42
+0:13
25.2M
25.20 mi13:40:163:13:337:412:56
8:30
+0:48
Finish
26.22 mi13:48:003:21:177:417:44
7:35
-0:55

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

7:29 /mi

Average Pace

7:41 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:48

94% of race

Time at Steady Pace

11:29

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:41 /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 mi10:50:0223:197:3023:19
7:30
#9689
10K
6.21 mi11:13:2146:387:3023:19
7:30
#10080
15K
9.32 mi11:36:451:10:027:3123:24
7:32
#10187
20K
12.43 mi12:00:081:33:257:3123:23
7:32
#9990
Half
13.11 mi12:05:201:38:377:315:12
7:37
#10026
25K
15.53 mi12:23:471:57:047:3218:27
7:37
#9937
30K
18.64 mi12:48:082:21:257:3524:21
7:50
#9876
20M
20.00 mi12:58:512:32:087:3610:43
7:53
#9787
21M
21.00 mi13:07:242:40:417:398:33
8:33
#9818
35K
21.75 mi13:13:212:46:387:405:57
7:57
#9898
23M
23.00 mi13:23:162:56:337:419:55
7:55
#9816
24M
24.00 mi13:30:453:04:027:407:29
7:29
#9679
40K
24.85 mi13:37:203:10:377:406:35
7:42
#9580
25.2M
25.20 mi13:40:163:13:337:412:56
8:30
#9557
Finish
26.22 mi13:48:003:21:177:417:44
7:35
#9525
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi96891701170110442(Top 39%)2043(Top 18%)2043(Top 42%)
10K6.21 mi3.10 mi10080-3911876-1751876-17510493(Top 39%)2050(Top 18%)2050(Top 42%)
15K9.32 mi3.11 mi10187-1071903-271903-2710442(Top 39%)2043(Top 18%)2043(Top 42%)
20K12.43 mi3.11 mi9990+1971831+721831+729525(Top 36%)1699(Top 15%)1699(Top 35%)
Half13.11 mi0.68 mi10026-361849-181849-1811109(Top 42%)2451(Top 21%)2451(Top 50%)
25K15.53 mi2.42 mi9937+891823+261823+269648(Top 36%)1851(Top 16%)1851(Top 38%)
30K18.64 mi3.11 mi9876+611836-131836-139649(Top 36%)1995(Top 17%)1995(Top 41%)
20M20.00 mi1.36 mi9787+891825+111825+119483(Top 36%)2009(Top 18%)2009(Top 41%)
21M21.00 mi1.00 mi9818-311860-351860-3510771(Top 40%)2750(Top 24%)2750(Top 56%)
35K21.75 mi0.75 mi9898-801916-561916-5611783(Top 44%)3290(Top 29%)3290(Top 67%)
23M23.00 mi1.25 mi9816+821913+31913+39229(Top 35%)2132(Top 19%)2132(Top 44%)
24M24.00 mi1.00 mi9679+1371877+361877+367628(Top 29%)1533(Top 13%)1533(Top 31%)
40K24.85 mi0.85 mi9580+991859+181859+188014(Top 30%)1752(Top 15%)1752(Top 36%)
25.2M25.20 mi0.35 mi9557+231868-91868-99616(Top 36%)2499(Top 22%)2499(Top 51%)
Finish26.22 mi1.02 mi9525+321875-71875-79223(Top 35%)2332(Top 20%)2332(Top 48%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10442

Females

2043

F18-39

2043

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10493

Females

2050

F18-39

2050

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10442

Females

2043

F18-39

2043

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9525

Females

1699

F18-39

1699

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11109

Females

2451

F18-39

2451

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

9648

Females

1851

F18-39

1851

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9649

Females

1995

F18-39

1995

30K→20M

18.6 - 20.0 mi

Top 36%
×5stories
+64ft-50ft

Overall

9483

Females

2009

F18-39

2009

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

10771

Females

2750

F18-39

2750

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

11783

Females

3290

F18-39

3290

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9229

Females

2132

F18-39

2132

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7628

Females

1533

F18-39

1533

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8014

Females

1752

F18-39

1752

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9616

Females

2499

F18-39

2499

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

9223

Females

2332

F18-39

2332

Passing Analysis

Category:
Athletes Passed
1663*
Passed By
1496
Net Change
+164
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9689
5K → 10K164554-391#9689#10080
10K → 15K143249-107#10080#10187
15K → 20K272*75+197#10187#9990
20K → Half1449-36#9990#10026
Half → 25K159*70+89#10026#9937
25K → 30K183*122+61#9937#9876
30K → 20M13041+89#9876#9787
20M → 21M69100-31#9787#9818
21M → 35K23103-80#9818#9898
35K → 23M12240+82#9898#9816
23M → 24M1458+137#9816#9679
24M → 40K109*10+99#9679#9580
40K → 25.2M4926+23#9580#9557
25.2M → Finish8149+32#9557#9525
TOTALS1663*1496+164

* 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