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BOSTON MARATHON 2023

Mary-Louise Timmermans

Bib: 19428•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 31%
Masters (Masters Women)
#0 / 6539
Top 17%
Division (F50-54)
#0 / 1207
Top 10%
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
7:59/mi
24:48
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
49:05
↑ 79↓ 1380.4%
15K· 9.32 mi
7:53/mi
1:13:34
↑ 67↓ 78
20K· 12.43 mi
7:56/mi
1:38:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:52/mi
1:43:35
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
2:02:47
↑ 66↓ 880.2%
30K· 18.64 mi
8:07/mi
2:28:00
↑ 181↓ 1480.2%
20M
8:15/mi
2:39:13
↑ 64↓ 500.2%
21M
8:53/mi
2:48:06
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
2:54:02
↑ 17↓ 861.7%
23M
8:26/mi
3:04:35
↑ 23↓ 630.6%
24M
8:08/mi
3:12:43
↓ 821.3%
40K· 24.85 mi
8:22/mi
3:19:52
↓ 200.3%
25.2M
8:59/mi
3:22:58
↑ 13↓ 160.2%
Finish· 26.22 mi
8:19/mi
3:31:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:35
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:47:52
Pace8:14 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2124:487:5924:48
7:59
-
10K
6.21 mi11:40:3849:057:5424:17
7:49
-0:10
15K
9.32 mi12:05:071:13:347:5424:29
7:53
+0:04
20K
12.43 mi12:29:461:38:137:5424:39
7:56
+0:03
Half
13.11 mi12:35:081:43:357:545:22
7:52
-0:04
25K
15.53 mi12:54:202:02:477:5419:12
7:55
+0:03
30K
18.64 mi13:19:332:28:007:5625:13
8:07
+0:12
20M
20.00 mi13:30:462:39:137:5811:13
8:15
+0:08
21M
21.00 mi13:39:392:48:068:008:53
8:53
+0:38
35K
21.75 mi13:45:352:54:028:005:56
7:56
-0:57
23M
23.00 mi13:56:083:04:358:0210:33
8:26
+0:30
24M
24.00 mi14:04:163:12:438:028:08
8:08
-0:18
40K
24.85 mi14:11:253:19:528:027:09
8:22
+0:14
25.2M
25.20 mi14:14:313:22:588:033:06
8:59
+0:37
Finish
26.22 mi14:23:003:31:278:048:29
8:19
-0:40

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

7:49 /mi

Average Pace

8:04 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:28

94% of race

Time at Steady Pace

11:59

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:04 /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 mi11:16:2124:487:5924:48
7:59
#13900
10K
6.21 mi11:40:3849:057:5424:17
7:49
#13590
15K
9.32 mi12:05:071:13:347:5424:29
7:53
#13522
20K
12.43 mi12:29:461:38:137:5424:39
7:56
#13354
Half
13.11 mi12:35:081:43:357:545:22
7:52
#13333
25K
15.53 mi12:54:202:02:477:5419:12
7:55
#13078
30K
18.64 mi13:19:332:28:007:5625:13
8:07
#12820
20M
20.00 mi13:30:462:39:137:5811:13
8:15
#12711
21M
21.00 mi13:39:392:48:068:008:53
8:53
#12693
35K
21.75 mi13:45:352:54:028:005:56
7:56
#12655
23M
23.00 mi13:56:083:04:358:0210:33
8:26
#12633
24M
24.00 mi14:04:163:12:438:028:08
8:08
#12609
40K
24.85 mi14:11:253:19:528:027:09
8:22
#12605
25.2M
25.20 mi14:14:313:22:588:033:06
8:59
#12609
Finish
26.22 mi14:23:003:31:278:048:29
8:19
#12659
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi139003964396413372(Top 50%)3710(Top 32%)3710(Top 307%)
10K6.21 mi3.10 mi13590+3103800+1643800+16413278(Top 50%)3596(Top 31%)3596(Top 298%)
15K9.32 mi3.11 mi13522+683766+343766+3413372(Top 50%)3710(Top 32%)3710(Top 307%)
20K12.43 mi3.11 mi13354+1683694+723694+7212911(Top 48%)3496(Top 31%)3496(Top 290%)
Half13.11 mi0.68 mi13333+213686+83686+813351(Top 50%)3700(Top 32%)3700(Top 307%)
25K15.53 mi2.42 mi13078+2553535+1513535+15112075(Top 45%)3125(Top 27%)3125(Top 259%)
30K18.64 mi3.11 mi12820+2583443+923443+9211775(Top 44%)3054(Top 27%)3054(Top 253%)
20M20.00 mi1.36 mi12711+1093406+373406+3712069(Top 45%)3317(Top 29%)3317(Top 275%)
21M21.00 mi1.00 mi12693+183408-23408-212776(Top 48%)3827(Top 34%)3827(Top 317%)
35K21.75 mi0.75 mi12655+383401+73401+711665(Top 44%)3244(Top 28%)3244(Top 269%)
23M23.00 mi1.25 mi12633+223409-83409-812765(Top 48%)3944(Top 35%)3944(Top 327%)
24M24.00 mi1.00 mi12609+243418-93418-912167(Top 46%)3678(Top 32%)3678(Top 305%)
40K24.85 mi0.85 mi12605+43432-143432-1412489(Top 47%)3930(Top 34%)3930(Top 326%)
25.2M25.20 mi0.35 mi12609-43448-163448-1612513(Top 47%)3972(Top 35%)3972(Top 329%)
Finish26.22 mi1.02 mi12659-503497-493497-4914268(Top 54%)4880(Top 43%)4880(Top 404%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

13372

Females

3710

F50-54

3710

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13278

Females

3596

F50-54

3596

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

13372

Females

3710

F50-54

3710

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12911

Females

3496

F50-54

3496

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

13351

Females

3700

F50-54

3700

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12075

Females

3125

F50-54

3125

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

11775

Females

3054

F50-54

3054

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12069

Females

3317

F50-54

3317

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

12776

Females

3827

F50-54

3827

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11665

Females

3244

F50-54

3244

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12765

Females

3944

F50-54

3944

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12167

Females

3678

F50-54

3678

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12489

Females

3930

F50-54

3930

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12513

Females

3972

F50-54

3972

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

14268

Females

4880

F50-54

4880

Passing Analysis

Category:
Athletes Passed
2269
Passed By
1028
Net Change
+1241
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13900
5K → 10K481171+310#13900#13590
10K → 15K223155+68#13590#13522
15K → 20K26698+168#13522#13354
20K → Half4423+21#13354#13333
Half → 25K29540+255#13333#13078
25K → 30K32163+258#13078#12820
30K → 20M16253+109#12820#12711
20M → 21M10082+18#12711#12693
21M → 35K6224+38#12693#12655
35K → 23M9674+22#12655#12633
23M → 24M8561+24#12633#12609
24M → 40K6056+4#12609#12605
40K → 25.2M2630-4#12605#12609
25.2M → Finish4898-50#12609#12659
TOTALS22691028+1241
📊

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