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BOSTON MARATHON 2023

Molly Wirtz

Bib: 13470•F

MN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 29%
Gender (Female)
#0 / 11423
Top 10%
Division (F18-39)
#0 / 4884
Top 19%
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
7:42/mi
23:56
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
47:21
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:10:38
↑ 67↓ 78
20K· 12.43 mi
7:32/mi
1:34:03
↑ 106↓ 860.1%
Half· 13.11 mi
7:29/mi
1:39:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:32/mi
1:57:25
↑ 66↓ 880.2%
30K· 18.64 mi
7:33/mi
2:20:52
↑ 181↓ 1480.2%
20M
7:17/mi
2:30:46
↑ 64↓ 500.2%
21M
7:35/mi
2:38:21
↑ 106↓ 241.6%
35K· 21.75 mi
6:53/mi
2:43:30
↑ 17↓ 861.7%
23M
7:10/mi
2:52:29
↑ 23↓ 630.6%
24M
7:08/mi
2:59:37
↓ 821.3%
40K· 24.85 mi
7:07/mi
3:05:42
↓ 200.3%
25.2M
7:29/mi
3:08:17
↑ 13↓ 160.2%
Finish· 26.22 mi
6:43/mi
3:15:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:39:09
Pace7:34 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:35:59
Pace7:19 /mi
📊Negative Split: 3.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2323:567:4223:56
7:42
-
10K
6.21 mi11:15:4847:217:3723:25
7:32
-0:10
15K
9.32 mi11:39:051:10:387:3523:17
7:30
-0:02
20K
12.43 mi12:02:301:34:037:3423:25
7:32
+0:02
Half
13.11 mi12:07:361:39:097:345:06
7:29
-0:03
25K
15.53 mi12:25:521:57:257:3418:16
7:32
+0:03
30K
18.64 mi12:49:192:20:527:3323:27
7:33
+0:01
20M
20.00 mi12:59:132:30:467:329:54
7:17
-0:16
21M
21.00 mi13:06:482:38:217:327:35
7:35
+0:18
35K
21.75 mi13:11:572:43:307:315:09
6:53
-0:42
23M
23.00 mi13:20:562:52:297:308:59
7:10
+0:17
24M
24.00 mi13:28:042:59:377:297:08
7:08
-0:02
40K
24.85 mi13:34:093:05:427:286:05
7:07
-0:01
25.2M
25.20 mi13:36:443:08:177:282:35
7:29
+0:22
Finish
26.22 mi13:43:353:15:087:276:51
6:43
-0:46

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

6:43 /mi

Average Pace

7:27 /mi

Slowest Pace

7:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

44:06

23% of race

Time at Steady Pace

2:31:02

77% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:27 /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 mi10:52:2323:567:4223:56
7:42
#11478
10K
6.21 mi11:15:4847:217:3723:25
7:32
#11103
15K
9.32 mi11:39:051:10:387:3523:17
7:30
#10744
20K
12.43 mi12:02:301:34:037:3423:25
7:32
#10415
Half
13.11 mi12:07:361:39:097:345:06
7:29
#10395
25K
15.53 mi12:25:521:57:257:3418:16
7:32
#10123
30K
18.64 mi12:49:192:20:527:3323:27
7:33
#9636
20M
20.00 mi12:59:132:30:467:329:54
7:17
#9263
21M
21.00 mi13:06:482:38:217:327:35
7:35
#8962
35K
21.75 mi13:11:572:43:307:315:09
6:53
#8776
23M
23.00 mi13:20:562:52:297:308:59
7:10
#8469
24M
24.00 mi13:28:042:59:377:297:08
7:08
#8287
40K
24.85 mi13:34:093:05:427:286:05
7:07
#8088
25.2M
25.20 mi13:36:443:08:177:282:35
7:29
#7988
Finish
26.22 mi13:43:353:15:087:276:51
6:43
#7772
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi114782574257410133(Top 38%)1899(Top 17%)1899(Top 39%)
10K6.21 mi3.10 mi11103+3752378+1962378+19610781(Top 40%)2187(Top 19%)2187(Top 45%)
15K9.32 mi3.11 mi10744+3592200+1782200+17810133(Top 38%)1899(Top 17%)1899(Top 39%)
20K12.43 mi3.11 mi10415+3292030+1702030+1709617(Top 36%)1735(Top 15%)1735(Top 36%)
Half13.11 mi0.68 mi10395+202024+62024+610041(Top 38%)1877(Top 16%)1877(Top 38%)
25K15.53 mi2.42 mi10123+2721911+1131911+1139033(Top 34%)1561(Top 14%)1561(Top 32%)
30K18.64 mi3.11 mi9636+4871731+1801731+1807573(Top 28%)1132(Top 10%)1132(Top 23%)
20M20.00 mi1.36 mi9263+3731619+1121619+1125587(Top 21%)600(Top 5%)600(Top 12%)
21M21.00 mi1.00 mi8962+3011515+1041515+1045038(Top 19%)541(Top 5%)541(Top 11%)
35K21.75 mi0.75 mi8776+1861445+701445+704739(Top 18%)456(Top 4%)456(Top 9%)
23M23.00 mi1.25 mi8469+3071358+871358+874702(Top 18%)466(Top 4%)466(Top 10%)
24M24.00 mi1.00 mi8287+1821315+431315+435415(Top 20%)695(Top 6%)695(Top 14%)
40K24.85 mi0.85 mi8088+1991255+601255+604484(Top 17%)511(Top 4%)511(Top 10%)
25.2M25.20 mi0.35 mi7988+1001231+241231+243953(Top 15%)442(Top 4%)442(Top 9%)
Finish26.22 mi1.02 mi7772+2161169+621169+623680(Top 14%)404(Top 4%)404(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10133

Females

1899

F18-39

1899

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

10781

Females

2187

F18-39

2187

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10133

Females

1899

F18-39

1899

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9617

Females

1735

F18-39

1735

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10041

Females

1877

F18-39

1877

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9033

Females

1561

F18-39

1561

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

7573

Females

1132

F18-39

1132

30K→20M

18.6 - 20.0 mi

Top 21%
×5story building
+64ft-50ft

Overall

5587

Females

600

F18-39

600

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5038

Females

541

F18-39

541

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

4739

Females

456

F18-39

456

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4702

Females

466

F18-39

466

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5415

Females

695

F18-39

695

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4484

Females

511

F18-39

511

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

3953

Females

442

F18-39

442

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2story building
+22ft-21ft

Overall

3680

Females

404

F18-39

404

Passing Analysis

Category:
Athletes Passed
3984*
Passed By
278
Net Change
+3706
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11478
5K → 10K521146+375#11478#11103
10K → 15K40344+359#11103#10744
15K → 20K35930+329#10744#10415
20K → Half4020+20#10415#10395
Half → 25K29523+272#10395#10123
25K → 30K494*7+487#10123#9636
30K → 20M3730+373#9636#9263
20M → 21M3021+301#9263#8962
21M → 35K1860+186#8962#8776
35K → 23M3081+307#8776#8469
23M → 24M1853+182#8469#8287
24M → 40K2012+199#8287#8088
40K → 25.2M1000+100#8088#7988
25.2M → Finish2171+216#7988#7772
TOTALS3984*278+3706

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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