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BOSTON MARATHON 2023

Chloe Smith

Bib: 25077•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 49%
Gender (Female)
#0 / 11423
Top 32%
Division (F18-39)
#0 / 4884
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
8:10/mi
25:23
↑ 97↓ 3451.5%
10K· 6.21 mi
7:44/mi
49:26
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:13:49
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:38:19
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:43:32
↑ 19↓ 370.5%
25K· 15.53 mi
7:59/mi
2:02:54
↑ 66↓ 880.2%
30K· 18.64 mi
8:28/mi
2:29:13
↑ 181↓ 1480.2%
20M
8:28/mi
2:40:43
↑ 64↓ 500.2%
21M
9:15/mi
2:49:58
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:55:52
↑ 17↓ 861.7%
23M
8:22/mi
3:06:20
↑ 23↓ 630.6%
24M
8:02/mi
3:14:22
↓ 821.3%
40K· 24.85 mi
8:16/mi
3:21:26
↓ 200.3%
25.2M
8:54/mi
3:24:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:06/mi
3:32:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:32
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:49:13
Pace8:20 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:3625:238:1025:23
8:10
-
10K
6.21 mi12:11:3949:267:5724:03
7:44
-0:26
15K
9.32 mi12:36:021:13:497:5524:23
7:51
+0:07
20K
12.43 mi13:00:321:38:197:5524:30
7:53
+0:02
Half
13.11 mi13:05:451:43:327:545:13
7:39
-0:14
25K
15.53 mi13:25:072:02:547:5519:22
7:59
+0:20
30K
18.64 mi13:51:262:29:138:0026:19
8:28
+0:29
20M
20.00 mi14:02:562:40:438:0211:30
8:28
0:00
21M
21.00 mi14:12:112:49:588:069:15
9:15
+0:47
35K
21.75 mi14:18:052:55:528:055:54
7:53
-1:22
23M
23.00 mi14:28:333:06:208:0610:28
8:22
+0:29
24M
24.00 mi14:36:353:14:228:068:02
8:02
-0:20
40K
24.85 mi14:43:393:21:268:067:04
8:16
+0:14
25.2M
25.20 mi14:46:433:24:308:073:04
8:54
+0:38
Finish
26.22 mi14:54:583:32:458:078:15
8:06
-0:48

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

7:39 /mi

Average Pace

8:07 /mi

Slowest Pace

9:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:03

40% of race

Time at Steady Pace

1:08:06

32% of race

Time at Slower Pace

1:00:36

28% of race

Average Pace: 8:07 /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 mi11:47:3625:238:1025:23
8:10
#15233
10K
6.21 mi12:11:3949:267:5724:03
7:44
#14042
15K
9.32 mi12:36:021:13:497:5524:23
7:51
#13740
20K
12.43 mi13:00:321:38:197:5524:30
7:53
#13412
Half
13.11 mi13:05:451:43:327:545:13
7:39
#13302
25K
15.53 mi13:25:072:02:547:5519:22
7:59
#13158
30K
18.64 mi13:51:262:29:138:0026:19
8:28
#13333
20M
20.00 mi14:02:562:40:438:0211:30
8:28
#13316
21M
21.00 mi14:12:112:49:588:069:15
9:15
#13400
35K
21.75 mi14:18:052:55:528:055:54
7:53
#13303
23M
23.00 mi14:28:333:06:208:0610:28
8:22
#13203
24M
24.00 mi14:36:353:14:228:068:02
8:02
#13112
40K
24.85 mi14:43:393:21:268:067:04
8:16
#13043
25.2M
25.20 mi14:46:433:24:308:073:04
8:54
#13017
Finish
26.22 mi14:54:583:32:458:078:15
8:06
#12990
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi152334792479213122(Top 49%)3555(Top 31%)3555(Top 73%)
10K6.21 mi3.10 mi14042+11914067+7254067+72512610(Top 47%)3213(Top 28%)3213(Top 66%)
15K9.32 mi3.11 mi13740+3023907+1603907+16013122(Top 49%)3555(Top 31%)3555(Top 73%)
20K12.43 mi3.11 mi13412+3283730+1773730+17712519(Top 47%)3273(Top 29%)3273(Top 67%)
Half13.11 mi0.68 mi13302+1103664+663664+6611511(Top 43%)2652(Top 23%)2652(Top 54%)
25K15.53 mi2.42 mi13158+1443587+773587+7712663(Top 48%)3455(Top 30%)3455(Top 71%)
30K18.64 mi3.11 mi13333-1753745-1583745-15814119(Top 53%)4402(Top 39%)4402(Top 90%)
20M20.00 mi1.36 mi13316+173744+13744+113421(Top 50%)4081(Top 36%)4081(Top 84%)
21M21.00 mi1.00 mi13400-843817-733817-7314724(Top 55%)4882(Top 43%)4882(Top 100%)
35K21.75 mi0.75 mi13303+973773+443773+4411358(Top 43%)3065(Top 27%)3065(Top 63%)
23M23.00 mi1.25 mi13203+1003735+383735+3812324(Top 46%)3702(Top 32%)3702(Top 76%)
24M24.00 mi1.00 mi13112+913716+193716+1911507(Top 43%)3338(Top 29%)3338(Top 68%)
40K24.85 mi0.85 mi13043+693700+163700+1611825(Top 44%)3572(Top 31%)3572(Top 73%)
25.2M25.20 mi0.35 mi13017+263696+43696+411972(Top 45%)3710(Top 32%)3710(Top 76%)
Finish26.22 mi1.02 mi12990+273694+23694+212768(Top 48%)4092(Top 36%)4092(Top 84%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13122

Females

3555

F18-39

3555

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

12610

Females

3213

F18-39

3213

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13122

Females

3555

F18-39

3555

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12519

Females

3273

F18-39

3273

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

11511

Females

2652

F18-39

2652

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12663

Females

3455

F18-39

3455

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14119

Females

4402

F18-39

4402

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

13421

Females

4081

F18-39

4081

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

14724

Females

4882

F18-39

4882

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

11358

Females

3065

F18-39

3065

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12324

Females

3702

F18-39

3702

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11507

Females

3338

F18-39

3338

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11825

Females

3572

F18-39

3572

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11972

Females

3710

F18-39

3710

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

12768

Females

4092

F18-39

4092

Passing Analysis

Category:
Athletes Passed
3180
Passed By
937
Net Change
+2243
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15233
5K → 10K123342+1191#15233#14042
10K → 15K37876+302#14042#13740
15K → 20K36739+328#13740#13412
20K → Half1144+110#13412#13302
Half → 25K21773+144#13302#13158
25K → 30K137312-175#13158#13333
30K → 20M9578+17#13333#13316
20M → 21M60144-84#13316#13400
21M → 35K11114+97#13400#13303
35K → 23M14343+100#13303#13203
23M → 24M12231+91#13203#13112
24M → 40K9425+69#13112#13043
40K → 25.2M3812+26#13043#13017
25.2M → Finish7144+27#13017#12990
TOTALS3180937+2243
📊

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