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BOSTON MARATHON 2023

Margaret Goldsmith

Bib: 12228•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 22%
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
7:31/mi
23:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:15/mi
45:50
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:08:41
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:31:55
↑ 106↓ 860.1%
Half· 13.11 mi
7:26/mi
1:36:59
↑ 19↓ 370.5%
25K· 15.53 mi
7:32/mi
1:55:15
↑ 66↓ 880.2%
30K· 18.64 mi
7:38/mi
2:18:58
↑ 181↓ 1480.2%
20M
7:42/mi
2:29:26
↑ 64↓ 500.2%
21M
8:05/mi
2:37:31
↑ 106↓ 241.6%
35K· 21.75 mi
7:34/mi
2:43:11
↑ 17↓ 861.7%
23M
7:43/mi
2:52:51
↑ 23↓ 630.6%
24M
7:19/mi
3:00:10
↓ 821.3%
40K· 24.85 mi
7:29/mi
3:06:34
↓ 200.3%
25.2M
8:10/mi
3:09:23
↑ 13↓ 160.2%
Finish· 26.22 mi
7:33/mi
3:17:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:59
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:40:06
Pace7:38 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1423:207:3123:20
7:31
-
10K
6.21 mi11:13:4445:507:2322:30
7:15
-0:16
15K
9.32 mi11:36:351:08:417:2222:51
7:21
+0:06
20K
12.43 mi11:59:491:31:557:2423:14
7:29
+0:08
Half
13.11 mi12:04:531:36:597:245:04
7:26
-0:03
25K
15.53 mi12:23:091:55:157:2518:16
7:32
+0:06
30K
18.64 mi12:46:522:18:587:2723:43
7:38
+0:06
20M
20.00 mi12:57:202:29:267:2810:28
7:42
+0:04
21M
21.00 mi13:05:252:37:317:308:05
8:05
+0:23
35K
21.75 mi13:11:052:43:117:305:40
7:34
-0:31
23M
23.00 mi13:20:452:52:517:319:40
7:43
+0:09
24M
24.00 mi13:28:043:00:107:307:19
7:19
-0:24
40K
24.85 mi13:34:283:06:347:306:24
7:29
+0:10
25.2M
25.20 mi13:37:173:09:237:312:49
8:10
+0:41
Finish
26.22 mi13:44:593:17:057:317:42
7:33
-0:37

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

7:15 /mi

Average Pace

7:31 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:11

94% of race

Time at Steady Pace

10:54

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi10:51:1423:207:3123:20
7:31
#9727
10K
6.21 mi11:13:4445:507:2322:30
7:15
#9012
15K
9.32 mi11:36:351:08:417:2222:51
7:21
#8973
20K
12.43 mi11:59:491:31:557:2423:14
7:29
#8978
Half
13.11 mi12:04:531:36:597:245:04
7:26
#9010
25K
15.53 mi12:23:091:55:157:2518:16
7:32
#8975
30K
18.64 mi12:46:522:18:587:2723:43
7:38
#8790
20M
20.00 mi12:57:202:29:267:2810:28
7:42
#8735
21M
21.00 mi13:05:252:37:317:308:05
8:05
#8645
35K
21.75 mi13:11:052:43:117:305:40
7:34
#8663
23M
23.00 mi13:20:452:52:517:319:40
7:43
#8578
24M
24.00 mi13:28:043:00:107:307:19
7:19
#8449
40K
24.85 mi13:34:283:06:347:306:24
7:29
#8361
25.2M
25.20 mi13:37:173:09:237:312:49
8:10
#8321
Finish
26.22 mi13:44:593:17:057:317:42
7:33
#8324
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9727172117218987(Top 34%)1442(Top 13%)1442(Top 30%)
10K6.21 mi3.10 mi9012+7151420+3011420+3018432(Top 32%)1205(Top 11%)1205(Top 25%)
15K9.32 mi3.11 mi8973+391416+41416+48987(Top 34%)1442(Top 13%)1442(Top 30%)
20K12.43 mi3.11 mi8978-51433-171433-179157(Top 34%)1549(Top 14%)1549(Top 32%)
Half13.11 mi0.68 mi9010-321448-151448-159647(Top 36%)1718(Top 15%)1718(Top 35%)
25K15.53 mi2.42 mi8975+351435+131435+139035(Top 34%)1563(Top 14%)1563(Top 32%)
30K18.64 mi3.11 mi8790+1851400+351400+358201(Top 31%)1387(Top 12%)1387(Top 28%)
20M20.00 mi1.36 mi8735+551404-41404-48226(Top 31%)1485(Top 13%)1485(Top 30%)
21M21.00 mi1.00 mi8645+901390+141390+147928(Top 30%)1487(Top 13%)1487(Top 30%)
35K21.75 mi0.75 mi8663-181408-181408-189109(Top 34%)1959(Top 17%)1959(Top 40%)
23M23.00 mi1.25 mi8578+851399+91399+97881(Top 30%)1528(Top 13%)1528(Top 31%)
24M24.00 mi1.00 mi8449+1291372+271372+276524(Top 25%)1085(Top 9%)1085(Top 22%)
40K24.85 mi0.85 mi8361+881358+141358+146670(Top 25%)1236(Top 11%)1236(Top 25%)
25.2M25.20 mi0.35 mi8321+401352+61352+67548(Top 28%)1618(Top 14%)1618(Top 33%)
Finish26.22 mi1.02 mi8324-31379-271379-278969(Top 34%)2220(Top 19%)2220(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

8987

Females

1442

F18-39

1442

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8432

Females

1205

F18-39

1205

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

8987

Females

1442

F18-39

1442

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9157

Females

1549

F18-39

1549

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

9647

Females

1718

F18-39

1718

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9035

Females

1563

F18-39

1563

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8201

Females

1387

F18-39

1387

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8226

Females

1485

F18-39

1485

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

7928

Females

1487

F18-39

1487

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9109

Females

1959

F18-39

1959

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

7881

Females

1528

F18-39

1528

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6524

Females

1085

F18-39

1085

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6670

Females

1236

F18-39

1236

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7548

Females

1618

F18-39

1618

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

8969

Females

2220

F18-39

2220

Passing Analysis

Category:
Athletes Passed
2213
Passed By
810
Net Change
+1403
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9727
5K → 10K78166+715#9727#9012
10K → 15K163124+39#9012#8973
15K → 20K126131-5#8973#8978
20K → Half1648-32#8978#9010
Half → 25K12085+35#9010#8975
25K → 30K25873+185#8975#8790
30K → 20M10752+55#8790#8735
20M → 21M11929+90#8735#8645
21M → 35K3856-18#8645#8663
35K → 23M12237+85#8663#8578
23M → 24M13910+129#8578#8449
24M → 40K10517+88#8449#8361
40K → 25.2M5111+40#8361#8321
25.2M → Finish6871-3#8321#8324
TOTALS2213810+1403
📊

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