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BOSTON MARATHON 2023

Ashley Niles

Bib: 14354•F

CO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 19%
Division (F18-39)
#0 / 4884
Top 34%
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
7:23/mi
22:57
↑ 97↓ 3451.5%
10K· 6.21 mi
7:21/mi
45:47
↑ 79↓ 1380.4%
15K· 9.32 mi
7:32/mi
1:09:11
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:33:18
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:38:31
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
1:57:44
↑ 66↓ 880.2%
30K· 18.64 mi
8:00/mi
2:22:34
↑ 181↓ 1480.2%
20M
8:11/mi
2:33:41
↑ 64↓ 500.2%
21M
8:34/mi
2:42:15
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:48:07
↑ 17↓ 861.7%
23M
8:02/mi
2:58:11
↑ 23↓ 630.6%
24M
7:51/mi
3:06:02
↓ 821.3%
40K· 24.85 mi
8:00/mi
3:12:52
↓ 200.3%
25.2M
8:27/mi
3:15:47
↑ 13↓ 160.2%
Finish· 26.22 mi
7:37/mi
3:23:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:31
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:45:02
Pace8:01 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1422:577:2322:57
7:23
-
10K
6.21 mi11:15:0445:477:2222:50
7:21
-0:02
15K
9.32 mi11:38:281:09:117:2523:24
7:32
+0:11
20K
12.43 mi12:02:351:33:187:3024:07
7:46
+0:14
Half
13.11 mi12:07:481:38:317:315:13
7:39
-0:07
25K
15.53 mi12:27:011:57:447:3519:13
7:56
+0:17
30K
18.64 mi12:51:512:22:347:3924:50
8:00
+0:04
20M
20.00 mi13:02:582:33:417:4111:07
8:11
+0:11
21M
21.00 mi13:11:322:42:157:448:34
8:34
+0:23
35K
21.75 mi13:17:242:48:077:445:52
7:51
-0:43
23M
23.00 mi13:27:282:58:117:4510:04
8:02
+0:11
24M
24.00 mi13:35:193:06:027:457:51
7:51
-0:11
40K
24.85 mi13:42:093:12:527:466:50
8:00
+0:09
25.2M
25.20 mi13:45:043:15:477:462:55
8:27
+0:27
Finish
26.22 mi13:52:503:23:337:467:46
7:37
-0:50

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

7:21 /mi

Average Pace

7:46 /mi

Slowest Pace

8:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:00:57

89% of race

Time at Steady Pace

22:36

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:46 /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 mi10:52:1422:577:2322:57
7:23
#8745
10K
6.21 mi11:15:0445:477:2222:50
7:21
#8966
15K
9.32 mi11:38:281:09:117:2523:24
7:32
#9380
20K
12.43 mi12:02:351:33:187:3024:07
7:46
#9895
Half
13.11 mi12:07:481:38:317:315:13
7:39
#9977
25K
15.53 mi12:27:011:57:447:3519:13
7:56
#10302
30K
18.64 mi12:51:512:22:347:3924:50
8:00
#10349
20M
20.00 mi13:02:582:33:417:4111:07
8:11
#10433
21M
21.00 mi13:11:322:42:157:448:34
8:34
#10439
35K
21.75 mi13:17:242:48:077:445:52
7:51
#10430
23M
23.00 mi13:27:282:58:117:4510:04
8:02
#10377
24M
24.00 mi13:35:193:06:027:457:51
7:51
#10355
40K
24.85 mi13:42:093:12:527:466:50
8:00
#10317
25.2M
25.20 mi13:45:043:15:477:462:55
8:27
#10278
Finish
26.22 mi13:52:503:23:337:467:46
7:37
#10217
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi87451295129510445(Top 39%)2046(Top 18%)2046(Top 42%)
10K6.21 mi3.10 mi8966-2211399-1041399-1049242(Top 35%)1515(Top 13%)1515(Top 31%)
15K9.32 mi3.11 mi9380-4141571-1721571-17210445(Top 39%)2046(Top 18%)2046(Top 42%)
20K12.43 mi3.11 mi9895-5151794-2231794-22311419(Top 43%)2640(Top 23%)2640(Top 54%)
Half13.11 mi0.68 mi9977-821828-341828-3411439(Top 43%)2580(Top 23%)2580(Top 53%)
25K15.53 mi2.42 mi10302-3251998-1701998-17012105(Top 45%)3132(Top 27%)3132(Top 64%)
30K18.64 mi3.11 mi10349-472076-782076-7810854(Top 41%)2565(Top 22%)2565(Top 53%)
20M20.00 mi1.36 mi10433-842138-622138-6211564(Top 43%)3026(Top 26%)3026(Top 62%)
21M21.00 mi1.00 mi10439-62173-352173-3510883(Top 41%)2799(Top 25%)2799(Top 57%)
35K21.75 mi0.75 mi10430+92186-132186-1310971(Top 41%)2848(Top 25%)2848(Top 58%)
23M23.00 mi1.25 mi10377+532186218610057(Top 38%)2534(Top 22%)2534(Top 52%)
24M24.00 mi1.00 mi10355+222200-142200-1410179(Top 38%)2672(Top 23%)2672(Top 55%)
40K24.85 mi0.85 mi10317+382211-112211-1110015(Top 38%)2652(Top 23%)2652(Top 54%)
25.2M25.20 mi0.35 mi10278+392205+62205+69309(Top 35%)2368(Top 21%)2368(Top 48%)
Finish26.22 mi1.02 mi10217+61220522059444(Top 35%)2449(Top 21%)2449(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10445

Females

2046

F18-39

2046

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9242

Females

1515

F18-39

1515

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10445

Females

2046

F18-39

2046

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

11419

Females

2640

F18-39

2640

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

11439

Females

2580

F18-39

2580

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12105

Females

3132

F18-39

3132

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

10854

Females

2565

F18-39

2565

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11564

Females

3026

F18-39

3026

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10883

Females

2799

F18-39

2799

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

10971

Females

2848

F18-39

2848

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10057

Females

2534

F18-39

2534

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10179

Females

2672

F18-39

2672

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10015

Females

2652

F18-39

2652

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9309

Females

2368

F18-39

2368

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9444

Females

2449

F18-39

2449

Passing Analysis

Category:
Athletes Passed
1084*
Passed By
2555
Net Change
-1472
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8745
5K → 10K177398-221#8745#8966
10K → 15K52466-414#8966#9380
15K → 20K44559-515#9380#9895
20K → Half789-82#9895#9977
Half → 25K51375-325#9977#10302
25K → 30K139186-47#10302#10349
30K → 20M53*137-84#10349#10433
20M → 21M8793-6#10433#10439
21M → 35K5041+9#10439#10430
35K → 23M10552+53#10430#10377
23M → 24M6947+22#10377#10355
24M → 40K8951+38#10355#10317
40K → 25.2M61*22+39#10317#10278
25.2M → Finish10039+61#10278#10217
TOTALS1084*2555-1472

* 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