Boston Marathon logo
BOSTON MARATHON 2024

Jenn Chadwick

Bib: 20303•F

VA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 49%
Gender (Female)
#0 / 10924
Top 37%
Masters (Masters Women)
#0 / 6263
Top 24%
Division (F50-54)
#0 / 1187
Top 17%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:42
Rank: #16469
Start → 5K
8:16/mi
25:42 split
10K· 6.21 mi
51:03
Rank: #15845 (+624)
5K → 10K
8:10/mi
25:21 split
15K· 9.32 mi
1:16:11
Rank: #15180 (+665)
10K → 15K
8:05/mi
25:08 split
20K· 12.43 mi
1:41:39
Rank: #14604 (+576)
15K → 20K
8:12/mi
25:28 split
Half· 13.11 mi
1:47:16
Rank: #14568 (+36)
20K → Half
8:14/mi
5:37 split
25K· 15.53 mi
2:08:20
Rank: #14398 (+170)
Half → 25K
8:41/mi
21:04 split
30K· 18.64 mi
2:36:50
Rank: #14282 (+116)
25K → 30K
9:10/mi
28:30 split
20M
2:49:00
Rank: #14084 (+198)
30K → 20M
8:57/mi
12:10 split
21M
2:59:19
Rank: #14075 (+9)
20M → 21M
10:19/mi
10:19 split
35K· 21.75 mi
3:05:12
Rank: #13781 (+294)
21M → 35K
7:52/mi
5:53 split
23M
3:15:33
Rank: #13366 (+415)
35K → 23M
8:16/mi
10:21 split
24M
3:23:37
Rank: #13038 (+328)
23M → 24M
8:04/mi
8:04 split
40K· 24.85 mi
3:30:57
Rank: #12831 (+207)
24M → 40K
8:35/mi
7:20 split
25.2M
3:34:17
Rank: #12754 (+77)
40K → 25.2M
9:40/mi
3:20 split
Finish· 26.22 mi
3:42:14
Rank: #12477 (+277)
25.2M → Finish
7:48/mi
7:57 split

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
Time1:47:16
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:54:58
Pace8:46 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3525:428:1625:42
8:16
-
10K
6.21 mi11:45:5651:038:1325:21
8:10
-0:06
15K
9.32 mi12:11:041:16:118:1025:08
8:05
-0:05
20K
12.43 mi12:36:321:41:398:1125:28
8:12
+0:07
Half
13.11 mi12:42:091:47:168:115:37
8:14
+0:02
25K
15.53 mi13:03:132:08:208:1621:04
8:41
+0:27
30K
18.64 mi13:31:432:36:508:2528:30
9:10
+0:29
20M
20.00 mi13:43:532:49:008:2712:10
8:57
-0:13
21M
21.00 mi13:54:122:59:198:3210:19
10:19
+1:22
35K
21.75 mi14:00:053:05:128:315:53
7:52
-2:27
23M
23.00 mi14:10:263:15:338:3010:21
8:16
+0:24
24M
24.00 mi14:18:303:23:378:298:04
8:04
-0:12
40K
24.85 mi14:25:503:30:578:297:20
8:35
+0:31
25.2M
25.20 mi14:29:103:34:178:303:20
9:40
+1:05
Finish
26.22 mi14:37:073:42:148:297:57
7:48
-1:52

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

7:48 /mi

Average Pace

8:29 /mi

Slowest Pace

10:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

13:50

6% of race

Time at Steady Pace

2:13:01

60% of race

Time at Slower Pace

1:15:23

34% of race

Average Pace: 8:29 /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 mi11:20:3525:428:1625:42
8:16
#16469
10K
6.21 mi11:45:5651:038:1325:21
8:10
#15845
15K
9.32 mi12:11:041:16:118:1025:08
8:05
#15180
20K
12.43 mi12:36:321:41:398:1125:28
8:12
#14604
Half
13.11 mi12:42:091:47:168:115:37
8:14
#14568
25K
15.53 mi13:03:132:08:208:1621:04
8:41
#14398
30K
18.64 mi13:31:432:36:508:2528:30
9:10
#14282
20M
20.00 mi13:43:532:49:008:2712:10
8:57
#14084
21M
21.00 mi13:54:122:59:198:3210:19
10:19
#14075
35K
21.75 mi14:00:053:05:128:315:53
7:52
#13781
23M
23.00 mi14:10:263:15:338:3010:21
8:16
#13366
24M
24.00 mi14:18:303:23:378:298:04
8:04
#13038
40K
24.85 mi14:25:503:30:578:297:20
8:35
#12831
25.2M
25.20 mi14:29:103:34:178:303:20
9:40
#12754
Finish
26.22 mi14:37:073:42:148:297:57
7:48
#12477
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi164695843584314042(Top 55%)4387(Top 40%)4387(Top 370%)
10K6.21 mi3.10 mi15845+6245436+4075436+40715282(Top 60%)5093(Top 47%)5093(Top 429%)
15K9.32 mi3.11 mi15180+6655058+3785058+37814042(Top 55%)4387(Top 40%)4387(Top 370%)
20K12.43 mi3.11 mi14604+5764718+3404718+34013131(Top 51%)3920(Top 36%)3920(Top 330%)
Half13.11 mi0.68 mi14568+364711+74711+714224(Top 56%)4584(Top 42%)4584(Top 386%)
25K15.53 mi2.42 mi14398+1704633+784633+7814036(Top 55%)4631(Top 42%)4631(Top 390%)
30K18.64 mi3.11 mi14282+1164648-154648-1514076(Top 55%)4894(Top 45%)4894(Top 412%)
20M20.00 mi1.36 mi14084+1984582+664582+6611880(Top 46%)3960(Top 36%)3960(Top 334%)
21M21.00 mi1.00 mi14075+94636-544636-5414191(Top 56%)5409(Top 50%)5409(Top 456%)
35K21.75 mi0.75 mi13781+2944513+1234513+1237018(Top 27%)1774(Top 16%)1774(Top 149%)
23M23.00 mi1.25 mi13366+4154335+1784335+1787182(Top 28%)1997(Top 18%)1997(Top 168%)
24M24.00 mi1.00 mi13038+3284195+1404195+1407040(Top 28%)2030(Top 19%)2030(Top 171%)
40K24.85 mi0.85 mi12831+2074135+604135+608800(Top 34%)2986(Top 27%)2986(Top 252%)
25.2M25.20 mi0.35 mi12754+774108+274108+279513(Top 37%)3416(Top 31%)3416(Top 288%)
Finish26.22 mi1.02 mi12477+2773990+1183990+1187393(Top 29%)2301(Top 21%)2301(Top 194%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14042

Females

4387

F50-54

4387

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

15282

Females

5093

F50-54

5093

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14042

Females

4387

F50-54

4387

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

13131

Females

3920

F50-54

3920

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14224

Females

4584

F50-54

4584

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

14036

Females

4631

F50-54

4631

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

14076

Females

4894

F50-54

4894

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

11880

Females

3960

F50-54

3960

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14191

Females

5409

F50-54

5409

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7018

Females

1774

F50-54

1774

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7182

Females

1997

F50-54

1997

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7040

Females

2030

F50-54

2030

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

8800

Females

2986

F50-54

2986

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9513

Females

3416

F50-54

3416

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

7393

Females

2301

F50-54

2301

Passing Analysis

Category:
Athletes Passed
4679
Passed By
687
Net Change
+3992
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16469
5K → 10K70884+624#16469#15845
10K → 15K68318+665#15845#15180
15K → 20K59519+576#15180#14604
20K → Half6226+36#14604#14568
Half → 25K285115+170#14568#14398
25K → 30K338222+116#14398#14282
30K → 20M23537+198#14282#14084
20M → 21M143134+9#14084#14075
21M → 35K2940+294#14075#13781
35K → 23M4161+415#13781#13366
23M → 24M3313+328#13366#13038
24M → 40K22114+207#13038#12831
40K → 25.2M8912+77#12831#12754
25.2M → Finish2792+277#12754#12477
TOTALS4679687+3992
📊

Passing Visuals

Category:
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