Boston Marathon logo
BOSTON MARATHON 2023

Amy Knittle

Bib: 19227•F

TN

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 42%
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:48
Rank: #16196
Start → 5K
25:48 | 8:18/mi
10K· 6.21 mi
50:05
Rank: #14836 (+1360)
5K → 10K
24:17 | 7:49/mi
15K· 9.32 mi
1:14:31
Rank: #14327 (+509)
10K → 15K
24:26 | 7:52/mi
20K· 12.43 mi
1:40:10
Rank: #14559 (-232)
15K → 20K
25:39 | 8:15/mi
Half· 13.11 mi
1:45:41
Rank: #14601 (-42)
20K → Half
5:31 | 8:05/mi
25K· 15.53 mi
2:06:19
Rank: #14856 (-255)
Half → 25K
20:38 | 8:31/mi
30K· 18.64 mi
2:34:13
Rank: #15285 (-429)
25K → 30K
27:54 | 8:59/mi
20M
2:46:41
Rank: #15465 (-180)
30K → 20M
12:28 | 9:10/mi
21M
2:56:29
Rank: #15560 (-95)
20M → 21M
9:48 | 9:48/mi
35K· 21.75 mi
3:03:44
Rank: #15793 (-233)
21M → 35K
7:15 | 9:41/mi
23M
3:15:50
Rank: #16050 (-257)
35K → 23M
12:06 | 9:40/mi
24M
3:25:41
Rank: #16317 (-267)
23M → 24M
9:51 | 9:51/mi
40K· 24.85 mi
3:34:00
Rank: #16460 (-143)
24M → 40K
8:19 | 9:44/mi
25.2M
3:37:33
Rank: #16490 (-30)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
3:47:18
Rank: #16698 (-208)
25.2M → Finish
9:45 | 9:34/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:41
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time2:01:37
Pace9:17 /mi
📊Positive Split: 15.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2025:488:1825:48
8:18
-
10K
6.21 mi11:41:3750:058:0424:17
7:49
-0:29
15K
9.32 mi12:06:031:14:318:0024:26
7:52
+0:03
20K
12.43 mi12:31:421:40:108:0425:39
8:15
+0:23
Half
13.11 mi12:37:131:45:418:045:31
8:05
-0:10
25K
15.53 mi12:57:512:06:198:0820:38
8:31
+0:26
30K
18.64 mi13:25:452:34:138:1627:54
8:59
+0:28
20M
20.00 mi13:38:132:46:418:2012:28
9:10
+0:11
21M
21.00 mi13:48:012:56:298:249:48
9:48
+0:38
35K
21.75 mi13:55:163:03:448:277:15
9:41
-0:07
23M
23.00 mi14:07:223:15:508:3112:06
9:40
-0:01
24M
24.00 mi14:17:133:25:418:349:51
9:51
+0:11
40K
24.85 mi14:25:323:34:008:378:19
9:44
-0:07
25.2M
25.20 mi14:29:053:37:338:383:33
10:18
+0:34
Finish
26.22 mi14:38:503:47:188:419:45
9:34
-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

7:49 /mi

Average Pace

8:41 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:19

56% of race

Time at Steady Pace

50:07

22% of race

Time at Slower Pace

50:52

22% of race

Average Pace: 8:40 /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 mi11:17:2025:488:1825:48
8:18
#16196
10K
6.21 mi11:41:3750:058:0424:17
7:49
#14836
15K
9.32 mi12:06:031:14:318:0024:26
7:52
#14327
20K
12.43 mi12:31:421:40:108:0425:39
8:15
#14559
Half
13.11 mi12:37:131:45:418:045:31
8:05
#14601
25K
15.53 mi12:57:512:06:198:0820:38
8:31
#14856
30K
18.64 mi13:25:452:34:138:1627:54
8:59
#15285
20M
20.00 mi13:38:132:46:418:2012:28
9:10
#15465
21M
21.00 mi13:48:012:56:298:249:48
9:48
#15560
35K
21.75 mi13:55:163:03:448:277:15
9:41
#15793
23M
23.00 mi14:07:223:15:508:3112:06
9:40
#16050
24M
24.00 mi14:17:133:25:418:349:51
9:51
#16317
40K
24.85 mi14:25:323:34:008:378:19
9:44
#16460
25.2M
25.20 mi14:29:053:37:338:383:33
10:18
#16490
Finish
26.22 mi14:38:503:47:188:419:45
9:34
#16698
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi161965406540613248(Top 50%)3637(Top 32%)3637(Top 200%)
10K6.21 mi3.10 mi14836+13604550+8564550+85613294(Top 50%)3612(Top 32%)3612(Top 199%)
15K9.32 mi3.11 mi14327+5094248+3024248+30213248(Top 50%)3637(Top 32%)3637(Top 200%)
20K12.43 mi3.11 mi14559-2324407-1594407-15915338(Top 58%)4929(Top 43%)4929(Top 271%)
Half13.11 mi0.68 mi14601-424431-244431-2415131(Top 57%)4776(Top 42%)4776(Top 263%)
25K15.53 mi2.42 mi14856-2554623-1924623-19216271(Top 61%)5598(Top 49%)5598(Top 308%)
30K18.64 mi3.11 mi15285-4294934-3114934-31117065(Top 64%)6101(Top 53%)6101(Top 336%)
20M20.00 mi1.36 mi15465-1805070-1365070-13617431(Top 65%)6410(Top 56%)6410(Top 353%)
21M21.00 mi1.00 mi15560-955150-805150-8017267(Top 65%)6344(Top 56%)6344(Top 349%)
35K21.75 mi0.75 mi15793-2335310-1605310-16020448(Top 77%)8190(Top 72%)8190(Top 451%)
23M23.00 mi1.25 mi16050-2575487-1775487-17718954(Top 71%)7376(Top 65%)7376(Top 406%)
24M24.00 mi1.00 mi16317-2675637-1505637-15020384(Top 77%)8191(Top 72%)8191(Top 451%)
40K24.85 mi0.85 mi16460-1435752-1155752-11519117(Top 72%)7544(Top 66%)7544(Top 415%)
25.2M25.20 mi0.35 mi16490-305771-195771-1918466(Top 69%)7199(Top 63%)7199(Top 396%)
Finish26.22 mi1.02 mi16698-2085898-1275898-12720354(Top 76%)8211(Top 72%)8211(Top 452%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

13248

Females

3637

F45-49

3637

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

13294

Females

3612

F45-49

3612

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

13248

Females

3637

F45-49

3637

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15338

Females

4929

F45-49

4929

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15131

Females

4776

F45-49

4776

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16271

Females

5598

F45-49

5598

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17065

Females

6101

F45-49

6101

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17431

Females

6410

F45-49

6410

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17267

Females

6344

F45-49

6344

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20448

Females

8190

F45-49

8190

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

18954

Females

7376

F45-49

7376

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

20384

Females

8191

F45-49

8191

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19117

Females

7544

F45-49

7544

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18466

Females

7199

F45-49

7199

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

20354

Females

8211

F45-49

8211

Passing Analysis

Category:
Athletes Passed
2441
Passed By
2943
Net Change
-502
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16196
5K → 10K139131+1360#16196#14836
10K → 15K54132+509#14836#14327
15K → 20K121353-232#14327#14559
20K → Half1658-42#14559#14601
Half → 25K82337-255#14601#14856
25K → 30K68497-429#14856#15285
30K → 20M33213-180#15285#15465
20M → 21M58153-95#15465#15560
21M → 35K11244-233#15560#15793
35K → 23M27284-257#15793#16050
23M → 24M18285-267#16050#16317
24M → 40K42185-143#16317#16460
40K → 25.2M1343-30#16460#16490
25.2M → Finish20228-208#16490#16698
TOTALS24412943-502
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing