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BOSTON MARATHON 2023

Lauren Udwari

Bib: 18298•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Masters (Masters Women)
#0 / 6539
Top 17%
Division (F40-44)
#0 / 1878
Top 32%
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
7:54/mi
24:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:44
↑ 79↓ 1380.4%
15K· 9.32 mi
7:52/mi
1:13:11
↑ 67↓ 78
20K· 12.43 mi
7:59/mi
1:37:59
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:43:24
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
2:03:01
↑ 66↓ 880.2%
30K· 18.64 mi
8:15/mi
2:28:38
↑ 181↓ 1480.2%
20M
8:12/mi
2:39:46
↑ 64↓ 500.2%
21M
8:47/mi
2:48:33
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
2:54:29
↑ 17↓ 861.7%
23M
8:19/mi
3:04:54
↑ 23↓ 630.6%
24M
8:02/mi
3:12:56
↓ 821.3%
40K· 24.85 mi
8:15/mi
3:19:59
↓ 200.3%
25.2M
8:54/mi
3:23:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:50/mi
3:31:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:24
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:47:38
Pace8:13 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:3924:337:5424:33
7:54
-
10K
6.21 mi11:39:5048:447:5124:11
7:47
-0:07
15K
9.32 mi12:04:171:13:117:5124:27
7:52
+0:05
20K
12.43 mi12:29:051:37:597:5324:48
7:59
+0:07
Half
13.11 mi12:34:301:43:247:535:25
7:56
-0:03
25K
15.53 mi12:54:072:03:017:5519:37
8:05
+0:09
30K
18.64 mi13:19:442:28:387:5825:37
8:15
+0:10
20M
20.00 mi13:30:522:39:467:5911:08
8:12
-0:03
21M
21.00 mi13:39:392:48:338:028:47
8:47
+0:35
35K
21.75 mi13:45:352:54:298:015:56
7:56
-0:51
23M
23.00 mi13:56:003:04:548:0210:25
8:19
+0:23
24M
24.00 mi14:04:023:12:568:028:02
8:02
-0:17
40K
24.85 mi14:11:053:19:598:037:03
8:15
+0:13
25.2M
25.20 mi14:14:093:23:038:033:04
8:54
+0:39
Finish
26.22 mi14:22:083:31:028:037:59
7:50
-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

7:47 /mi

Average Pace

8:03 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:11

94% of race

Time at Steady Pace

11:51

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:03 /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 mi11:15:3924:337:5424:33
7:54
#13270
10K
6.21 mi11:39:5048:447:5124:11
7:47
#13131
15K
9.32 mi12:04:171:13:117:5124:27
7:52
#13155
20K
12.43 mi12:29:051:37:597:5324:48
7:59
#13174
Half
13.11 mi12:34:301:43:247:535:25
7:56
#13211
25K
15.53 mi12:54:072:03:017:5519:37
8:05
#13219
30K
18.64 mi13:19:442:28:387:5825:37
8:15
#13090
20M
20.00 mi13:30:522:39:467:5911:08
8:12
#12948
21M
21.00 mi13:39:392:48:338:028:47
8:47
#12872
35K
21.75 mi13:45:352:54:298:015:56
7:56
#12811
23M
23.00 mi13:56:003:04:548:0210:25
8:19
#12745
24M
24.00 mi14:04:023:12:568:028:02
8:02
#12682
40K
24.85 mi14:11:053:19:598:037:03
8:15
#12643
25.2M
25.20 mi14:14:093:23:038:033:04
8:54
#12631
Finish
26.22 mi14:22:083:31:028:037:59
7:50
#12548
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi132703590359013272(Top 50%)3647(Top 32%)3647(Top 194%)
10K6.21 mi3.10 mi13131+1393525+653525+6512994(Top 49%)3423(Top 30%)3423(Top 182%)
15K9.32 mi3.11 mi13155-243556-313556-3113272(Top 50%)3647(Top 32%)3647(Top 194%)
20K12.43 mi3.11 mi13174-193596-403596-4013282(Top 50%)3696(Top 32%)3696(Top 197%)
Half13.11 mi0.68 mi13211-373610-143610-1413903(Top 52%)4012(Top 35%)4012(Top 214%)
25K15.53 mi2.42 mi13219-83628-183628-1813447(Top 51%)3886(Top 34%)3886(Top 207%)
30K18.64 mi3.11 mi13090+1293606+223606+2212652(Top 48%)3556(Top 31%)3556(Top 189%)
20M20.00 mi1.36 mi12948+1423538+683538+6811677(Top 44%)3107(Top 27%)3107(Top 165%)
21M21.00 mi1.00 mi12872+763515+233515+2312180(Top 46%)3501(Top 31%)3501(Top 186%)
35K21.75 mi0.75 mi12811+613493+223493+2211661(Top 44%)3240(Top 28%)3240(Top 173%)
23M23.00 mi1.25 mi12745+663479+143479+1412061(Top 45%)3550(Top 31%)3550(Top 189%)
24M24.00 mi1.00 mi12682+633464+153464+1511497(Top 43%)3328(Top 29%)3328(Top 177%)
40K24.85 mi0.85 mi12643+393457+73457+711701(Top 44%)3513(Top 31%)3513(Top 187%)
25.2M25.20 mi0.35 mi12631+123462-53462-511963(Top 45%)3701(Top 32%)3701(Top 197%)
Finish26.22 mi1.02 mi12548+833438+243438+2410971(Top 41%)3179(Top 28%)3179(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

13272

Females

3647

F40-44

3647

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

12994

Females

3423

F40-44

3423

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

13272

Females

3647

F40-44

3647

15K→20K

9.3 - 12.4 mi

Top 50%
×5story building
+106ft-86ft

Overall

13282

Females

3696

F40-44

3696

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13903

Females

4012

F40-44

4012

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13447

Females

3886

F40-44

3886

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12652

Females

3556

F40-44

3556

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11677

Females

3107

F40-44

3107

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

12180

Females

3501

F40-44

3501

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11661

Females

3240

F40-44

3240

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12061

Females

3550

F40-44

3550

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11497

Females

3328

F40-44

3328

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11701

Females

3513

F40-44

3513

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11963

Females

3701

F40-44

3701

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10971

Females

3179

F40-44

3179

Passing Analysis

Category:
Athletes Passed
2002
Passed By
1280
Net Change
+722
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13270
5K → 10K387248+139#13270#13131
10K → 15K197221-24#13131#13155
15K → 20K173192-19#13155#13174
20K → Half2663-37#13174#13211
Half → 25K139147-8#13211#13219
25K → 30K249120+129#13219#13090
30K → 20M17432+142#13090#12948
20M → 21M13256+76#12948#12872
21M → 35K8928+61#12872#12811
35K → 23M10943+66#12811#12745
23M → 24M10340+63#12745#12682
24M → 40K7536+39#12682#12643
40K → 25.2M3523+12#12643#12631
25.2M → Finish11431+83#12631#12548
TOTALS20021280+722
📊

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