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BOSTON MARATHON 2023

Laura Sparks

Bib: 18569•F

TX

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Division (F18-39)
#0 / 4884
Top 48%
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
8:05/mi
25:08
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
50:07
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:15:01
↑ 67↓ 78
20K· 12.43 mi
8:01/mi
1:39:55
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:45:20
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:04:53
↑ 66↓ 880.2%
30K· 18.64 mi
8:12/mi
2:30:21
↑ 181↓ 1480.2%
20M
8:17/mi
2:41:37
↑ 64↓ 500.2%
21M
8:17/mi
2:49:54
↑ 106↓ 241.6%
35K· 21.75 mi
7:48/mi
2:55:44
↑ 17↓ 861.7%
23M
8:02/mi
3:05:47
↑ 23↓ 630.6%
24M
7:43/mi
3:13:30
↓ 821.3%
40K· 24.85 mi
7:57/mi
3:20:18
↓ 200.3%
25.2M
8:22/mi
3:23:11
↑ 13↓ 160.2%
Finish· 26.22 mi
7:38/mi
3:30:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:45:20
Pace8:02 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:45:38
Pace8:03 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2425:088:0525:08
8:05
-
10K
6.21 mi11:41:2350:078:0424:59
8:02
-0:03
15K
9.32 mi12:06:171:15:018:0324:54
8:01
-0:01
20K
12.43 mi12:31:111:39:558:0224:54
8:01
0:00
Half
13.11 mi12:36:361:45:208:025:25
7:56
-0:05
25K
15.53 mi12:56:092:04:538:0219:33
8:04
+0:08
30K
18.64 mi13:21:372:30:218:0425:28
8:12
+0:08
20M
20.00 mi13:32:532:41:378:0511:16
8:17
+0:05
21M
21.00 mi13:41:102:49:548:058:17
8:17
0:00
35K
21.75 mi13:47:002:55:448:055:50
7:48
-0:29
23M
23.00 mi13:57:033:05:478:0510:03
8:02
+0:14
24M
24.00 mi14:04:463:13:308:047:43
7:43
-0:19
40K
24.85 mi14:11:343:20:188:046:48
7:57
+0:14
25.2M
25.20 mi14:14:273:23:118:042:53
8:22
+0:25
Finish
26.22 mi14:22:143:30:588:037:47
7:38
-0:44

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

7:38 /mi

Average Pace

8:03 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

33:33

16% of race

Time at Steady Pace

2:57:25

84% 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 mi11:16:2425:088:0525:08
8:05
#14640
10K
6.21 mi11:41:2350:078:0424:59
8:02
#14866
15K
9.32 mi12:06:171:15:018:0324:54
8:01
#14732
20K
12.43 mi12:31:111:39:558:0224:54
8:01
#14391
Half
13.11 mi12:36:361:45:208:025:25
7:56
#14362
25K
15.53 mi12:56:092:04:538:0219:33
8:04
#14190
30K
18.64 mi13:21:372:30:218:0425:28
8:12
#13816
20M
20.00 mi13:32:532:41:378:0511:16
8:17
#13671
21M
21.00 mi13:41:102:49:548:058:17
8:17
#13373
35K
21.75 mi13:47:002:55:448:055:50
7:48
#13259
23M
23.00 mi13:57:033:05:478:0510:03
8:02
#13024
24M
24.00 mi14:04:463:13:308:047:43
7:43
#12863
40K
24.85 mi14:11:343:20:188:046:48
7:57
#12724
25.2M
25.20 mi14:14:273:23:118:042:53
8:22
#12665
Finish
26.22 mi14:22:143:30:588:037:47
7:38
#12528
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi146404409440914498(Top 54%)4379(Top 38%)4379(Top 90%)
10K6.21 mi3.10 mi14866-2264566-1574566-15715110(Top 57%)4730(Top 41%)4730(Top 97%)
15K9.32 mi3.11 mi14732+1344494+724494+7214498(Top 54%)4379(Top 38%)4379(Top 90%)
20K12.43 mi3.11 mi14391+3414307+1874307+18713557(Top 51%)3843(Top 34%)3843(Top 79%)
Half13.11 mi0.68 mi14362+294295+124295+1213901(Top 52%)4010(Top 35%)4010(Top 82%)
25K15.53 mi2.42 mi14190+1724224+714224+7113257(Top 50%)3778(Top 33%)3778(Top 77%)
30K18.64 mi3.11 mi13816+3744025+1994025+19912340(Top 46%)3381(Top 30%)3381(Top 69%)
20M20.00 mi1.36 mi13671+1453962+633962+6312270(Top 46%)3450(Top 30%)3450(Top 71%)
21M21.00 mi1.00 mi13373+2983796+1663796+1669188(Top 35%)2015(Top 18%)2015(Top 41%)
35K21.75 mi0.75 mi13259+1143747+493747+4910704(Top 40%)2738(Top 24%)2738(Top 56%)
23M23.00 mi1.25 mi13024+2353636+1113636+1119978(Top 37%)2510(Top 22%)2510(Top 51%)
24M24.00 mi1.00 mi12863+1613568+683568+689244(Top 35%)2232(Top 20%)2232(Top 46%)
40K24.85 mi0.85 mi12724+1393506+623506+629780(Top 37%)2556(Top 22%)2556(Top 52%)
25.2M25.20 mi0.35 mi12665+593480+263480+268779(Top 33%)2182(Top 19%)2182(Top 45%)
Finish26.22 mi1.02 mi12528+1373424+563424+569585(Top 36%)2515(Top 22%)2515(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14498

Females

4379

F18-39

4379

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

15110

Females

4730

F18-39

4730

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14498

Females

4379

F18-39

4379

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

13557

Females

3843

F18-39

3843

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13901

Females

4010

F18-39

4010

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13257

Females

3778

F18-39

3778

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12340

Females

3381

F18-39

3381

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

12270

Females

3450

F18-39

3450

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9188

Females

2015

F18-39

2015

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10704

Females

2738

F18-39

2738

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

9978

Females

2510

F18-39

2510

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9244

Females

2232

F18-39

2232

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9780

Females

2556

F18-39

2556

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8779

Females

2182

F18-39

2182

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9585

Females

2515

F18-39

2515

Passing Analysis

Category:
Athletes Passed
2912
Passed By
800
Net Change
+2112
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14640
5K → 10K203429-226#14640#14866
10K → 15K255121+134#14866#14732
15K → 20K39150+341#14732#14391
20K → Half4617+29#14391#14362
Half → 25K23159+172#14362#14190
25K → 30K41642+374#14190#13816
30K → 20M17631+145#13816#13671
20M → 21M3013+298#13671#13373
21M → 35K1239+114#13373#13259
35K → 23M2449+235#13259#13024
23M → 24M1676+161#13024#12863
24M → 40K1445+139#12863#12724
40K → 25.2M634+59#12724#12665
25.2M → Finish15215+137#12665#12528
TOTALS2912800+2112
📊

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