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BOSTON MARATHON 2023

Grace Smith

Bib: 16413•F

SC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 42%
Gender (Female)
#0 / 11423
Top 23%
Division (F18-39)
#0 / 4884
Top 39%
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
7:32/mi
23:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:26/mi
46:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:09:47
↑ 67↓ 78
20K· 12.43 mi
7:32/mi
1:33:10
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:38:08
↑ 19↓ 370.5%
25K· 15.53 mi
7:43/mi
1:56:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:08/mi
2:22:06
↑ 181↓ 1480.2%
20M
8:37/mi
2:33:49
↑ 64↓ 500.2%
21M
9:06/mi
2:42:55
↑ 106↓ 241.6%
35K· 21.75 mi
8:07/mi
2:48:59
↑ 17↓ 861.7%
23M
8:38/mi
2:59:48
↑ 23↓ 630.6%
24M
8:28/mi
3:08:16
↓ 821.3%
40K· 24.85 mi
8:24/mi
3:15:27
↓ 200.3%
25.2M
8:51/mi
3:18:30
↑ 13↓ 160.2%
Finish· 26.22 mi
7:45/mi
3:26:24
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:08
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:48:16
Pace8:16 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:3823:257:3223:25
7:32
-
10K
6.21 mi11:36:4546:327:2923:07
7:26
-0:06
15K
9.32 mi12:00:001:09:477:2923:15
7:29
+0:03
20K
12.43 mi12:23:231:33:107:3023:23
7:32
+0:03
Half
13.11 mi12:28:211:38:087:294:58
7:17
-0:15
25K
15.53 mi12:47:031:56:507:3118:42
7:43
+0:26
30K
18.64 mi13:12:192:22:067:3725:16
8:08
+0:25
20M
20.00 mi13:24:022:33:497:4111:43
8:37
+0:29
21M
21.00 mi13:33:082:42:557:459:06
9:06
+0:29
35K
21.75 mi13:39:122:48:597:466:04
8:07
-0:59
23M
23.00 mi13:50:012:59:487:4910:49
8:38
+0:31
24M
24.00 mi13:58:293:08:167:518:28
8:28
-0:10
40K
24.85 mi14:05:403:15:277:527:11
8:24
-0:04
25.2M
25.20 mi14:08:433:18:307:533:03
8:51
+0:27
Finish
26.22 mi14:16:373:26:247:537:54
7:45
-1:06

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

7:17 /mi

Average Pace

7:53 /mi

Slowest Pace

9:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:44

60% of race

Time at Steady Pace

31:20

15% of race

Time at Slower Pace

50:20

24% of race

Average Pace: 7:52 /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 mi11:13:3823:257:3223:25
7:32
#9981
10K
6.21 mi11:36:4546:327:2923:07
7:26
#9927
15K
9.32 mi12:00:001:09:477:2923:15
7:29
#9926
20K
12.43 mi12:23:231:33:107:3023:23
7:32
#9809
Half
13.11 mi12:28:211:38:087:294:58
7:17
#9720
25K
15.53 mi12:47:031:56:507:3118:42
7:43
#9826
30K
18.64 mi13:12:192:22:067:3725:16
8:08
#10156
20M
20.00 mi13:24:022:33:497:4111:43
8:37
#10491
21M
21.00 mi13:33:082:42:557:459:06
9:06
#10679
35K
21.75 mi13:39:122:48:597:466:04
8:07
#10744
23M
23.00 mi13:50:012:59:487:4910:49
8:38
#10932
24M
24.00 mi13:58:293:08:167:518:28
8:28
#11118
40K
24.85 mi14:05:403:15:277:527:11
8:24
#11148
25.2M
25.20 mi14:08:433:18:307:533:03
8:51
#11150
Finish
26.22 mi14:16:373:26:247:537:54
7:45
#11099
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi99811856185610058(Top 38%)1871(Top 16%)1871(Top 38%)
10K6.21 mi3.10 mi9927+541811+451811+459998(Top 38%)1819(Top 16%)1819(Top 37%)
15K9.32 mi3.11 mi9926+11793+181793+1810058(Top 38%)1871(Top 16%)1871(Top 38%)
20K12.43 mi3.11 mi9809+1171759+341759+349532(Top 36%)1706(Top 15%)1706(Top 35%)
Half13.11 mi0.68 mi9720+891719+401719+408542(Top 32%)1321(Top 12%)1321(Top 27%)
25K15.53 mi2.42 mi9826-1061778-591778-5910421(Top 39%)2198(Top 19%)2198(Top 45%)
30K18.64 mi3.11 mi10156-3301970-1921970-19211881(Top 45%)3112(Top 27%)3112(Top 64%)
20M20.00 mi1.36 mi10491-3352165-1952165-19514404(Top 54%)4638(Top 41%)4638(Top 95%)
21M21.00 mi1.00 mi10679-1882293-1282293-12813987(Top 53%)4470(Top 39%)4470(Top 92%)
35K21.75 mi0.75 mi10744-652349-562349-5612849(Top 48%)3902(Top 34%)3902(Top 80%)
23M23.00 mi1.25 mi10932-1882466-1172466-11714014(Top 53%)4615(Top 40%)4615(Top 94%)
24M24.00 mi1.00 mi11118-1862586-1202586-12014279(Top 54%)4820(Top 42%)4820(Top 99%)
40K24.85 mi0.85 mi11148-302624-382624-3812720(Top 48%)4058(Top 36%)4058(Top 83%)
25.2M25.20 mi0.35 mi11150-22641-172641-1711612(Top 44%)3508(Top 31%)3508(Top 72%)
Finish26.22 mi1.02 mi11099+512637+42637+410342(Top 39%)2859(Top 25%)2859(Top 59%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10058

Females

1871

F18-39

1871

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

9998

Females

1819

F18-39

1819

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10058

Females

1871

F18-39

1871

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9532

Females

1706

F18-39

1706

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8542

Females

1321

F18-39

1321

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

10421

Females

2198

F18-39

2198

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

11881

Females

3112

F18-39

3112

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14404

Females

4638

F18-39

4638

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

13987

Females

4470

F18-39

4470

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

12849

Females

3902

F18-39

3902

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14014

Females

4615

F18-39

4615

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

14279

Females

4820

F18-39

4820

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12720

Females

4058

F18-39

4058

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11612

Females

3508

F18-39

3508

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

10342

Females

2859

F18-39

2859

Passing Analysis

Category:
Athletes Passed
1353*
Passed By
2469
Net Change
-1118
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9981
5K → 10K339285+54#9981#9927
10K → 15K186184+1#9927#9926
15K → 20K219*102+117#9926#9809
20K → Half967+89#9809#9720
Half → 25K92197-106#9720#9826
25K → 30K76406-330#9826#10156
30K → 20M23*358-335#10156#10491
20M → 21M34222-188#10491#10679
21M → 35K35100-65#10679#10744
35K → 23M38226-188#10744#10932
23M → 24M33219-186#10932#11118
24M → 40K4979-30#11118#11148
40K → 25.2M3638-2#11148#11150
25.2M → Finish9746+51#11150#11099
TOTALS1353*2469-1118

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

📊

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