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BOSTON MARATHON 2023

Margaret Kopacz

Bib: 23395•F

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Top 40%
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
8:43/mi
27:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:49/mi
54:29
↑ 79↓ 1380.4%
15K· 9.32 mi
9:04/mi
1:22:39
↑ 67↓ 78
20K· 12.43 mi
9:15/mi
1:51:23
↑ 106↓ 860.1%
Half· 13.11 mi
9:08/mi
1:57:37
↑ 19↓ 370.5%
25K· 15.53 mi
9:16/mi
2:20:06
↑ 66↓ 880.2%
30K· 18.64 mi
9:24/mi
2:49:17
↑ 181↓ 1480.2%
20M
9:19/mi
3:01:56
↑ 64↓ 500.2%
21M
9:45/mi
3:11:41
↑ 106↓ 241.6%
35K· 21.75 mi
8:57/mi
3:18:23
↑ 17↓ 861.7%
23M
9:02/mi
3:29:41
↑ 23↓ 630.6%
24M
8:43/mi
3:38:24
↓ 821.3%
40K· 24.85 mi
8:49/mi
3:45:56
↓ 200.3%
25.2M
9:34/mi
3:49:14
↑ 13↓ 160.2%
Finish· 26.22 mi
8:42/mi
3:58:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:37
Pace8:58 /mi
2nd Half
Distance13.11 mi
Time2:00:29
Pace9:11 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1127:048:4327:04
8:43
-
10K
6.21 mi11:50:3654:298:4627:25
8:49
+0:06
15K
9.32 mi12:18:461:22:398:5228:10
9:04
+0:15
20K
12.43 mi12:47:301:51:238:5828:44
9:15
+0:11
Half
13.11 mi12:53:441:57:378:586:14
9:08
-0:07
25K
15.53 mi13:16:132:20:069:0122:29
9:16
+0:08
30K
18.64 mi13:45:242:49:179:0529:11
9:24
+0:08
20M
20.00 mi13:58:033:01:569:0612:39
9:19
-0:05
21M
21.00 mi14:07:483:11:419:089:45
9:45
+0:26
35K
21.75 mi14:14:303:18:239:076:42
8:57
-0:48
23M
23.00 mi14:25:483:29:419:0711:18
9:02
+0:05
24M
24.00 mi14:34:313:38:249:068:43
8:43
-0:19
40K
24.85 mi14:42:033:45:569:057:32
8:49
+0:06
25.2M
25.20 mi14:45:213:49:149:063:18
9:34
+0:45
Finish
26.22 mi14:54:133:58:069:058:52
8:42
-0:52

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

8:42 /mi

Average Pace

9:05 /mi

Slowest Pace

9:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:48:21

96% of race

Time at Steady Pace

9:45

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:05 /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 mi11:23:1127:048:4327:04
8:43
#18967
10K
6.21 mi11:50:3654:298:4627:25
8:49
#19511
15K
9.32 mi12:18:461:22:398:5228:10
9:04
#19967
20K
12.43 mi12:47:301:51:238:5828:44
9:15
#20172
Half
13.11 mi12:53:441:57:378:586:14
9:08
#20231
25K
15.53 mi13:16:132:20:069:0122:29
9:16
#20205
30K
18.64 mi13:45:242:49:179:0529:11
9:24
#19973
20M
20.00 mi13:58:033:01:569:0612:39
9:19
#19796
21M
21.00 mi14:07:483:11:419:089:45
9:45
#19627
35K
21.75 mi14:14:303:18:239:076:42
8:57
#19570
23M
23.00 mi14:25:483:29:419:0711:18
9:02
#19388
24M
24.00 mi14:34:313:38:249:068:43
8:43
#19239
40K
24.85 mi14:42:033:45:569:057:32
8:49
#19089
25.2M
25.20 mi14:45:213:49:149:063:18
9:34
#19044
Finish
26.22 mi14:54:133:58:069:058:52
8:42
#18969
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi189677185718520796(Top 78%)8119(Top 71%)8119(Top 996%)
10K6.21 mi3.10 mi19511-5447472-2877472-28720063(Top 75%)7730(Top 68%)7730(Top 948%)
15K9.32 mi3.11 mi19967-4567717-2457717-24520796(Top 78%)8119(Top 71%)8119(Top 996%)
20K12.43 mi3.11 mi20172-2057813-967813-9620773(Top 78%)8095(Top 71%)8095(Top 993%)
Half13.11 mi0.68 mi20231-597844-317844-3120958(Top 79%)8214(Top 72%)8214(Top 1008%)
25K15.53 mi2.42 mi20205+267821+237821+2320106(Top 76%)7752(Top 68%)7752(Top 951%)
30K18.64 mi3.11 mi19973+2327718+1037718+10319013(Top 71%)7201(Top 63%)7201(Top 884%)
20M20.00 mi1.36 mi19796+1777618+1007618+10018082(Top 68%)6788(Top 59%)6788(Top 833%)
21M21.00 mi1.00 mi19627+1697527+917527+9117073(Top 64%)6236(Top 55%)6236(Top 765%)
35K21.75 mi0.75 mi19570+577502+257502+2517763(Top 67%)6711(Top 59%)6711(Top 823%)
23M23.00 mi1.25 mi19388+1827399+1037399+10316201(Top 61%)5857(Top 51%)5857(Top 719%)
24M24.00 mi1.00 mi19239+1497327+727327+7215798(Top 59%)5711(Top 50%)5711(Top 701%)
40K24.85 mi0.85 mi19089+1507253+747253+7415179(Top 57%)5409(Top 47%)5409(Top 664%)
25.2M25.20 mi0.35 mi19044+457229+247229+2415612(Top 59%)5673(Top 50%)5673(Top 696%)
Finish26.22 mi1.02 mi18969+757196+337196+3316529(Top 62%)6120(Top 54%)6120(Top 751%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20796

Females

8119

F55-59

8119

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

20063

Females

7730

F55-59

7730

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20796

Females

8119

F55-59

8119

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20773

Females

8095

F55-59

8095

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

20958

Females

8214

F55-59

8214

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20106

Females

7752

F55-59

7752

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

19013

Females

7201

F55-59

7201

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

18082

Females

6788

F55-59

6788

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

17073

Females

6236

F55-59

6236

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17763

Females

6711

F55-59

6711

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

16201

Females

5857

F55-59

5857

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

15798

Females

5711

F55-59

5711

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15179

Females

5409

F55-59

5409

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15612

Females

5673

F55-59

5673

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

16529

Females

6120

F55-59

6120

Passing Analysis

Category:
Athletes Passed
1807
Passed By
1809
Net Change
-2
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18967
5K → 10K134678-544#18967#19511
10K → 15K55511-456#19511#19967
15K → 20K109314-205#19967#20172
20K → Half1574-59#20172#20231
Half → 25K139113+26#20231#20205
25K → 30K27947+232#20205#19973
30K → 20M18710+177#19973#19796
20M → 21M18516+169#19796#19627
21M → 35K6811+57#19627#19570
35K → 23M19210+182#19570#19388
23M → 24M1523+149#19388#19239
24M → 40K1555+150#19239#19089
40K → 25.2M516+45#19089#19044
25.2M → Finish8611+75#19044#18969
TOTALS18071809-2
📊

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