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BOSTON MARATHON 2023

Julia Buddendorff

Bib: 13587•F

FL

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

Start
0:00:00
Race begins
5K· 3.11 mi
23:47
Rank: #11064
Start → 5K
23:47 | 7:39/mi
10K· 6.21 mi
47:23
Rank: #11147 (-83)
5K → 10K
23:36 | 7:36/mi
15K· 9.32 mi
1:11:34
Rank: #11593 (-446)
10K → 15K
24:11 | 7:47/mi
20K· 12.43 mi
1:33:59
Rank: #10368 (+1225)
15K → 20K
22:25 | 7:13/mi
Half· 13.11 mi
1:38:52
Rank: #10214 (+154)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:56:50
Rank: #9820 (+394)
Half → 25K
17:58 | 7:25/mi
30K· 18.64 mi
2:20:26
Rank: #9432 (+388)
25K → 30K
23:36 | 7:36/mi
20M
2:30:43
Rank: #9241 (+191)
30K → 20M
10:17 | 7:34/mi
21M
2:38:19
Rank: #8951 (+290)
20M → 21M
7:36 | 7:36/mi
35K· 21.75 mi
2:43:35
Rank: #8805 (+146)
21M → 35K
5:16 | 7:02/mi
23M
2:52:42
Rank: #8537 (+268)
35K → 23M
9:07 | 7:17/mi
24M
2:59:51
Rank: #8356 (+181)
23M → 24M
7:09 | 7:09/mi
40K· 24.85 mi
3:06:03
Rank: #8205 (+151)
24M → 40K
6:12 | 7:15/mi
25.2M
3:08:40
Rank: #8113 (+92)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:15:07
Rank: #7765 (+348)
25.2M → Finish
6:27 | 6:20/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:38:52
Pace7:32 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:15
Pace7:21 /mi
📊Negative Split: 2.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1323:477:3923:47
7:39
-
10K
6.21 mi11:15:4947:237:3823:36
7:36
-0:03
15K
9.32 mi11:40:001:11:347:4124:11
7:47
+0:11
20K
12.43 mi12:02:251:33:597:3422:25
7:13
-0:34
Half
13.11 mi12:07:181:38:527:324:53
7:09
-0:04
25K
15.53 mi12:25:161:56:507:3117:58
7:25
+0:16
30K
18.64 mi12:48:522:20:267:3223:36
7:36
+0:11
20M
20.00 mi12:59:092:30:437:3210:17
7:34
-0:02
21M
21.00 mi13:06:452:38:197:327:36
7:36
+0:02
35K
21.75 mi13:12:012:43:357:315:16
7:02
-0:34
23M
23.00 mi13:21:082:52:427:319:07
7:17
+0:15
24M
24.00 mi13:28:172:59:517:307:09
7:09
-0:08
40K
24.85 mi13:34:293:06:037:296:12
7:15
+0:06
25.2M
25.20 mi13:37:063:08:407:292:37
7:35
+0:20
Finish
26.22 mi13:43:333:15:077:276:27
6:20
-1:15

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

6:20 /mi

Average Pace

7:27 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

46:10

24% of race

Time at Steady Pace

46:11

24% of race

Time at Slower Pace

1:42:46

53% of race

Average Pace: 7:26 /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 mi10:52:1323:477:3923:47
7:39
#11064
10K
6.21 mi11:15:4947:237:3823:36
7:36
#11147
15K
9.32 mi11:40:001:11:347:4124:11
7:47
#11593
20K
12.43 mi12:02:251:33:597:3422:25
7:13
#10368
Half
13.11 mi12:07:181:38:527:324:53
7:09
#10214
25K
15.53 mi12:25:161:56:507:3117:58
7:25
#9820
30K
18.64 mi12:48:522:20:267:3223:36
7:36
#9432
20M
20.00 mi12:59:092:30:437:3210:17
7:34
#9241
21M
21.00 mi13:06:452:38:197:327:36
7:36
#8951
35K
21.75 mi13:12:012:43:357:315:16
7:02
#8805
23M
23.00 mi13:21:082:52:427:319:07
7:17
#8537
24M
24.00 mi13:28:172:59:517:307:09
7:09
#8356
40K
24.85 mi13:34:293:06:037:296:12
7:15
#8205
25.2M
25.20 mi13:37:063:08:407:292:37
7:35
#8113
Finish
26.22 mi13:43:333:15:077:276:27
6:20
#7765
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi110642360236012591(Top 47%)3226(Top 28%)3226(Top 66%)
10K6.21 mi3.10 mi11147-832402-422402-4211295(Top 42%)2485(Top 22%)2485(Top 51%)
15K9.32 mi3.11 mi11593-4462656-2542656-25412591(Top 47%)3226(Top 28%)3226(Top 66%)
20K12.43 mi3.11 mi10368+12252000+6562000+6567210(Top 27%)848(Top 7%)848(Top 17%)
Half13.11 mi0.68 mi10214+1541934+661934+667629(Top 29%)972(Top 9%)972(Top 20%)
25K15.53 mi2.42 mi9820+3941772+1621772+1628117(Top 30%)1223(Top 11%)1223(Top 25%)
30K18.64 mi3.11 mi9432+3881662+1101662+1107925(Top 30%)1273(Top 11%)1273(Top 26%)
20M20.00 mi1.36 mi9241+1911610+521610+527299(Top 27%)1137(Top 10%)1137(Top 23%)
21M21.00 mi1.00 mi8951+2901508+1021508+1025131(Top 19%)567(Top 5%)567(Top 12%)
35K21.75 mi0.75 mi8805+1461457+511457+515609(Top 21%)659(Top 6%)659(Top 13%)
23M23.00 mi1.25 mi8537+2681388+691388+695247(Top 20%)606(Top 5%)606(Top 12%)
24M24.00 mi1.00 mi8356+1811335+531335+535504(Top 21%)729(Top 6%)729(Top 15%)
40K24.85 mi0.85 mi8205+1511304+311304+315193(Top 20%)718(Top 6%)718(Top 15%)
25.2M25.20 mi0.35 mi8113+921273+311273+314412(Top 17%)567(Top 5%)567(Top 12%)
Finish26.22 mi1.02 mi7765+3481167+1061167+1061773(Top 7%)114(Top 1.0%)114(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

12591

Females

3226

F18-39

3226

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11295

Females

2485

F18-39

2485

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

12591

Females

3226

F18-39

3226

15K→20K

9.3 - 12.4 mi

Top 27%
×5stories
+106ft-86ft

Overall

7210

Females

848

F18-39

848

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7629

Females

972

F18-39

972

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

8117

Females

1223

F18-39

1223

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

7925

Females

1273

F18-39

1273

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7299

Females

1137

F18-39

1137

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5131

Females

567

F18-39

567

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5609

Females

659

F18-39

659

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5247

Females

606

F18-39

606

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5504

Females

729

F18-39

729

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5193

Females

718

F18-39

718

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4412

Females

567

F18-39

567

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1773

Females

114

F18-39

114

Passing Analysis

Category:
Athletes Passed
4203*
Passed By
904
Net Change
+3299
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11064
5K → 10K257340-83#11064#11147
10K → 15K72518-446#11147#11593
15K → 20K12250+1225#11593#10368
20K → Half1551+154#10368#10214
Half → 25K400*6+394#10214#9820
25K → 30K409*21+388#9820#9432
30K → 20M1987+191#9432#9241
20M → 21M2911+290#9241#8951
21M → 35K1482+146#8951#8805
35K → 23M2691+268#8805#8537
23M → 24M1832+181#8537#8356
24M → 40K1565+151#8356#8205
40K → 25.2M920+92#8205#8113
25.2M → Finish3480+348#8113#7765
TOTALS4203*904+3299

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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