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BOSTON MARATHON 2023

Shauna Walther

Bib: 17636•F

WI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 29%
Masters (Masters Women)
#0 / 6539
Top 16%
Division (F40-44)
#0 / 1878
Top 31%
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
8:14/mi
25:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:56/mi
50:12
↑ 79↓ 1380.4%
15K· 9.32 mi
7:53/mi
1:14:40
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:39:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:44:21
↑ 19↓ 370.5%
25K· 15.53 mi
7:48/mi
2:03:15
↑ 66↓ 880.2%
30K· 18.64 mi
8:04/mi
2:28:19
↑ 181↓ 1480.2%
20M
8:20/mi
2:39:38
↑ 64↓ 500.2%
21M
8:42/mi
2:48:20
↑ 106↓ 241.6%
35K· 21.75 mi
7:59/mi
2:54:18
↑ 17↓ 861.7%
23M
8:14/mi
3:04:36
↑ 23↓ 630.6%
24M
7:57/mi
3:12:33
↓ 821.3%
40K· 24.85 mi
8:02/mi
3:19:25
↓ 200.3%
25.2M
8:36/mi
3:22:23
↑ 13↓ 160.2%
Finish· 26.22 mi
7:53/mi
3:30:25
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:21
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time1:46:04
Pace8:05 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2225:348:1425:34
8:14
-
10K
6.21 mi11:41:0050:128:0524:38
7:56
-0:18
15K
9.32 mi12:05:281:14:408:0124:28
7:53
-0:03
20K
12.43 mi12:29:521:39:047:5824:24
7:51
-0:02
Half
13.11 mi12:35:091:44:217:585:17
7:45
-0:06
25K
15.53 mi12:54:032:03:157:5618:54
7:48
+0:03
30K
18.64 mi13:19:072:28:197:5725:04
8:04
+0:16
20M
20.00 mi13:30:262:39:387:5911:19
8:20
+0:16
21M
21.00 mi13:39:082:48:208:018:42
8:42
+0:22
35K
21.75 mi13:45:062:54:188:015:58
7:59
-0:43
23M
23.00 mi13:55:243:04:368:0210:18
8:14
+0:15
24M
24.00 mi14:03:213:12:338:017:57
7:57
-0:17
40K
24.85 mi14:10:133:19:258:016:52
8:02
+0:05
25.2M
25.20 mi14:13:113:22:238:022:58
8:36
+0:34
Finish
26.22 mi14:21:133:30:258:028:02
7:53
-0:43

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

7:45 /mi

Average Pace

8:02 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:18:45

94% of race

Time at Steady Pace

11:40

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:02 /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 mi11:16:2225:348:1425:34
8:14
#15661
10K
6.21 mi11:41:0050:128:0524:38
7:56
#14963
15K
9.32 mi12:05:281:14:408:0124:28
7:53
#14438
20K
12.43 mi12:29:521:39:047:5824:24
7:51
#13872
Half
13.11 mi12:35:091:44:217:585:17
7:45
#13787
25K
15.53 mi12:54:032:03:157:5618:54
7:48
#13330
30K
18.64 mi13:19:072:28:197:5725:04
8:04
#12963
20M
20.00 mi13:30:262:39:387:5911:19
8:20
#12894
21M
21.00 mi13:39:082:48:208:018:42
8:42
#12783
35K
21.75 mi13:45:062:54:188:015:58
7:59
#12732
23M
23.00 mi13:55:243:04:368:0210:18
8:14
#12638
24M
24.00 mi14:03:213:12:338:017:57
7:57
#12561
40K
24.85 mi14:10:133:19:258:016:52
8:02
#12476
25.2M
25.20 mi14:13:113:22:238:022:58
8:36
#12430
Finish
26.22 mi14:21:133:30:258:028:02
7:53
#12384
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi156615071507113313(Top 50%)3674(Top 32%)3674(Top 196%)
10K6.21 mi3.10 mi14963+6984627+4444627+44414236(Top 53%)4197(Top 37%)4197(Top 223%)
15K9.32 mi3.11 mi14438+5254320+3074320+30713313(Top 50%)3674(Top 32%)3674(Top 196%)
20K12.43 mi3.11 mi13872+5664007+3134007+31312210(Top 46%)3092(Top 27%)3092(Top 165%)
Half13.11 mi0.68 mi13787+853953+543953+5412307(Top 46%)3099(Top 27%)3099(Top 165%)
25K15.53 mi2.42 mi13330+4573704+2493704+24911077(Top 42%)2525(Top 22%)2525(Top 134%)
30K18.64 mi3.11 mi12963+3673527+1773527+17711440(Top 43%)2872(Top 25%)2872(Top 153%)
20M20.00 mi1.36 mi12894+693507+203507+2012548(Top 47%)3605(Top 32%)3605(Top 192%)
21M21.00 mi1.00 mi12783+1113463+443463+4411697(Top 44%)3248(Top 28%)3248(Top 173%)
35K21.75 mi0.75 mi12732+513447+163447+1611982(Top 45%)3418(Top 30%)3418(Top 182%)
23M23.00 mi1.25 mi12638+943412+353412+3511398(Top 43%)3213(Top 28%)3213(Top 171%)
24M24.00 mi1.00 mi12561+773389+233389+2310922(Top 41%)3053(Top 27%)3053(Top 163%)
40K24.85 mi0.85 mi12476+853360+293360+2910296(Top 39%)2807(Top 25%)2807(Top 149%)
25.2M25.20 mi0.35 mi12430+463341+193341+1910249(Top 38%)2829(Top 25%)2829(Top 151%)
Finish26.22 mi1.02 mi12384+463339+23339+211314(Top 42%)3352(Top 29%)3352(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

13313

Females

3674

F40-44

3674

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14236

Females

4197

F40-44

4197

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

13313

Females

3674

F40-44

3674

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12210

Females

3092

F40-44

3092

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12307

Females

3099

F40-44

3099

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11077

Females

2525

F40-44

2525

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11440

Females

2872

F40-44

2872

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

12548

Females

3605

F40-44

3605

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11697

Females

3248

F40-44

3248

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

11982

Females

3418

F40-44

3418

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

11398

Females

3213

F40-44

3213

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10922

Females

3053

F40-44

3053

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10296

Females

2807

F40-44

2807

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10249

Females

2829

F40-44

2829

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11314

Females

3352

F40-44

3352

Passing Analysis

Category:
Athletes Passed
3725
Passed By
448
Net Change
+3277
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15661
5K → 10K77981+698#15661#14963
10K → 15K55429+525#14963#14438
15K → 20K58115+566#14438#13872
20K → Half905+85#13872#13787
Half → 25K4625+457#13787#13330
25K → 30K40942+367#13330#12963
30K → 20M12354+69#12963#12894
20M → 21M15544+111#12894#12783
21M → 35K7827+51#12783#12732
35K → 23M12733+94#12732#12638
23M → 24M11538+77#12638#12561
24M → 40K10217+85#12561#12476
40K → 25.2M5610+46#12476#12430
25.2M → Finish9448+46#12430#12384
TOTALS3725448+3277
📊

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