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BOSTON MARATHON 2023

Julie Robertson

Bib: 19089•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 49%
Masters (Masters Women)
#0 / 6539
Top 38%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:49
Rank: #16235
Start → 5K
25:49 | 8:19/mi
10K· 6.21 mi
51:09
Rank: #16061 (+174)
5K → 10K
25:20 | 8:09/mi
15K· 9.32 mi
1:16:48
Rank: #16118 (-57)
10K → 15K
25:39 | 8:15/mi
20K· 12.43 mi
1:43:01
Rank: #16189 (-71)
15K → 20K
26:13 | 8:26/mi
Half· 13.11 mi
1:48:40
Rank: #16206 (-17)
20K → Half
5:39 | 8:17/mi
25K· 15.53 mi
2:09:20
Rank: #16226 (-20)
Half → 25K
20:40 | 8:31/mi
30K· 18.64 mi
2:36:38
Rank: #16174 (+52)
25K → 30K
27:18 | 8:47/mi
20M
2:49:02
Rank: #16226 (-52)
30K → 20M
12:24 | 9:07/mi
21M
2:58:09
Rank: #16074 (+152)
20M → 21M
9:07 | 9:07/mi
35K· 21.75 mi
3:04:31
Rank: #16041 (+33)
21M → 35K
6:22 | 8:31/mi
23M
3:15:50
Rank: #16048 (-7)
35K → 23M
11:19 | 9:02/mi
24M
3:24:39
Rank: #16049 (-1)
23M → 24M
8:49 | 8:49/mi
40K· 24.85 mi
3:32:24
Rank: #16056 (-7)
24M → 40K
7:45 | 9:04/mi
25.2M
3:35:50
Rank: #16067 (-11)
40K → 25.2M
3:26 | 9:57/mi
Finish· 26.22 mi
3:44:53
Rank: #16148 (-81)
25.2M → Finish
9:03 | 8:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:40
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:56:13
Pace8:52 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5725:498:1925:49
8:19
-
10K
6.21 mi11:43:1751:098:1425:20
8:09
-0:10
15K
9.32 mi12:08:561:16:488:1425:39
8:15
+0:06
20K
12.43 mi12:35:091:43:018:1726:13
8:26
+0:11
Half
13.11 mi12:40:481:48:408:175:39
8:17
-0:09
25K
15.53 mi13:01:282:09:208:2020:40
8:31
+0:14
30K
18.64 mi13:28:462:36:388:2427:18
8:47
+0:16
20M
20.00 mi13:41:102:49:028:2712:24
9:07
+0:20
21M
21.00 mi13:50:172:58:098:299:07
9:07
0:00
35K
21.75 mi13:56:393:04:318:296:22
8:31
-0:36
23M
23.00 mi14:07:583:15:508:3111:19
9:02
+0:31
24M
24.00 mi14:16:473:24:398:328:49
8:49
-0:13
40K
24.85 mi14:24:323:32:248:337:45
9:04
+0:15
25.2M
25.20 mi14:27:583:35:508:343:26
9:57
+0:53
Finish
26.22 mi14:37:013:44:538:359:03
8:53
-1:04

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

8:09 /mi

Average Pace

8:35 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:42

60% of race

Time at Steady Pace

45:10

20% of race

Time at Slower Pace

44:01

20% of race

Average Pace: 8:35 /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 mi11:17:5725:498:1925:49
8:19
#16235
10K
6.21 mi11:43:1751:098:1425:20
8:09
#16061
15K
9.32 mi12:08:561:16:488:1425:39
8:15
#16118
20K
12.43 mi12:35:091:43:018:1726:13
8:26
#16189
Half
13.11 mi12:40:481:48:408:175:39
8:17
#16206
25K
15.53 mi13:01:282:09:208:2020:40
8:31
#16226
30K
18.64 mi13:28:462:36:388:2427:18
8:47
#16174
20M
20.00 mi13:41:102:49:028:2712:24
9:07
#16226
21M
21.00 mi13:50:172:58:098:299:07
9:07
#16074
35K
21.75 mi13:56:393:04:318:296:22
8:31
#16041
23M
23.00 mi14:07:583:15:508:3111:19
9:02
#16048
24M
24.00 mi14:16:473:24:398:328:49
8:49
#16049
40K
24.85 mi14:24:323:32:248:337:45
9:04
#16056
25.2M
25.20 mi14:27:583:35:508:343:26
9:57
#16067
Finish
26.22 mi14:37:013:44:538:359:03
8:53
#16148
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi162355431543116265(Top 61%)5450(Top 48%)5450(Top 290%)
10K6.21 mi3.10 mi16061+1745319+1125319+11215955(Top 60%)5252(Top 46%)5252(Top 280%)
15K9.32 mi3.11 mi16118-575361-425361-4216265(Top 61%)5450(Top 48%)5450(Top 290%)
20K12.43 mi3.11 mi16189-715416-555416-5516482(Top 62%)5637(Top 49%)5637(Top 300%)
Half13.11 mi0.68 mi16206-175433-175433-1716415(Top 62%)5547(Top 49%)5547(Top 295%)
25K15.53 mi2.42 mi16226-205472-395472-3916360(Top 61%)5648(Top 49%)5648(Top 301%)
30K18.64 mi3.11 mi16174+525488-165488-1615983(Top 60%)5488(Top 48%)5488(Top 292%)
20M20.00 mi1.36 mi16226-525533-455533-4517163(Top 64%)6272(Top 55%)6272(Top 334%)
21M21.00 mi1.00 mi16074+1525458+755458+7514097(Top 53%)4542(Top 40%)4542(Top 242%)
35K21.75 mi0.75 mi16041+335461-35461-315415(Top 58%)5360(Top 47%)5360(Top 285%)
23M23.00 mi1.25 mi16048-75485-245485-2416257(Top 61%)5884(Top 52%)5884(Top 313%)
24M24.00 mi1.00 mi16049-15497-125497-1216307(Top 61%)5970(Top 52%)5970(Top 318%)
40K24.85 mi0.85 mi16056-75510-135510-1316497(Top 62%)6127(Top 54%)6127(Top 326%)
25.2M25.20 mi0.35 mi16067-115512-25512-217217(Top 65%)6543(Top 57%)6543(Top 348%)
Finish26.22 mi1.02 mi16148-815579-675579-6717426(Top 65%)6600(Top 58%)6600(Top 351%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16265

Females

5450

F40-44

5450

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

15955

Females

5252

F40-44

5252

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16265

Females

5450

F40-44

5450

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

16482

Females

5637

F40-44

5637

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

16415

Females

5547

F40-44

5547

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16360

Females

5648

F40-44

5648

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

15983

Females

5488

F40-44

5488

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

17163

Females

6272

F40-44

6272

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

14097

Females

4542

F40-44

4542

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

15415

Females

5360

F40-44

5360

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

16257

Females

5884

F40-44

5884

23M→24M

23.0 - 24.0 mi

Top 61%
×6stories
+12ft-82ft

Overall

16307

Females

5970

F40-44

5970

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16497

Females

6127

F40-44

6127

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17217

Females

6543

F40-44

6543

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17426

Females

6600

F40-44

6600

Passing Analysis

Category:
Athletes Passed
1657
Passed By
1570
Net Change
+87
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16235
5K → 10K385211+174#16235#16061
10K → 15K177234-57#16061#16118
15K → 20K145216-71#16118#16189
20K → Half3956-17#16189#16206
Half → 25K134154-20#16206#16226
25K → 30K209157+52#16226#16174
30K → 20M67119-52#16174#16226
20M → 21M16412+152#16226#16074
21M → 35K6936+33#16074#16041
35K → 23M7986-7#16041#16048
23M → 24M6869-1#16048#16049
24M → 40K5663-7#16049#16056
40K → 25.2M2132-11#16056#16067
25.2M → Finish44125-81#16067#16148
TOTALS16571570+87
📊

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