Boston Marathon logo
BOSTON MARATHON 2024

Kerry Colford

Bib: 11166•F

NY

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 35%
Gender (Female)
#0 / 10924
Top 20%
Division (F18-39)
#0 / 4660
Top 35%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:56
Rank: #7418
Start → 5K
21:56 | 7:04/mi
10K· 6.21 mi
44:40
Rank: #8062 (-644)
5K → 10K
22:44 | 7:19/mi
15K· 9.32 mi
1:07:20
Rank: #8045 (+17)
10K → 15K
22:40 | 7:18/mi
20K· 12.43 mi
1:30:27
Rank: #7960 (+85)
15K → 20K
23:07 | 7:26/mi
Half· 13.11 mi
1:35:35
Rank: #8017 (-57)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
1:55:14
Rank: #8463 (-446)
Half → 25K
19:39 | 8:06/mi
30K· 18.64 mi
2:21:38
Rank: #8857 (-394)
25K → 30K
26:24 | 8:30/mi
20M
2:33:37
Rank: #8978 (-121)
30K → 20M
11:59 | 8:49/mi
21M
2:43:11
Rank: #9032 (-54)
20M → 21M
9:34 | 9:34/mi
35K· 21.75 mi
2:49:31
Rank: #9052 (-20)
21M → 35K
6:20 | 8:28/mi
23M
3:00:57
Rank: #9171 (-119)
35K → 23M
11:26 | 9:08/mi
24M
3:09:55
Rank: #9297 (-126)
23M → 24M
8:58 | 8:58/mi
40K· 24.85 mi
3:17:25
Rank: #9303 (-6)
24M → 40K
7:30 | 8:46/mi
25.2M
3:20:36
Rank: #9264 (+39)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:28:18
Rank: #9069 (+195)
25.2M → Finish
7:42 | 7:33/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
Time1:35:35
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:52:43
Pace8:36 /mi
📊Positive Split: 17.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1021:567:0421:56
7:04
-
10K
6.21 mi11:15:5444:407:1122:44
7:19
+0:15
15K
9.32 mi11:38:341:07:207:1322:40
7:18
-0:01
20K
12.43 mi12:01:411:30:277:1723:07
7:26
+0:08
Half
13.11 mi12:06:491:35:357:175:08
7:31
+0:05
25K
15.53 mi12:26:281:55:147:2519:39
8:06
+0:35
30K
18.64 mi12:52:522:21:387:3626:24
8:30
+0:24
20M
20.00 mi13:04:512:33:377:4111:59
8:49
+0:19
21M
21.00 mi13:14:252:43:117:469:34
9:34
+0:45
35K
21.75 mi13:20:452:49:317:486:20
8:28
-1:06
23M
23.00 mi13:32:113:00:577:5211:26
9:08
+0:40
24M
24.00 mi13:41:093:09:557:558:58
8:58
-0:10
40K
24.85 mi13:48:393:17:257:577:30
8:46
-0:12
25.2M
25.20 mi13:51:503:20:367:583:11
9:14
+0:28
Finish
26.22 mi13:59:323:28:187:577:42
7:33
-1:41

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

7:04 /mi

Average Pace

7:57 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:17

50% of race

Time at Steady Pace

1:11:52

35% of race

Time at Slower Pace

33:09

16% of race

Average Pace: 7:57 /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 mi10:53:1021:567:0421:56
7:04
#7418
10K
6.21 mi11:15:5444:407:1122:44
7:19
#8062
15K
9.32 mi11:38:341:07:207:1322:40
7:18
#8045
20K
12.43 mi12:01:411:30:277:1723:07
7:26
#7960
Half
13.11 mi12:06:491:35:357:175:08
7:31
#8017
25K
15.53 mi12:26:281:55:147:2519:39
8:06
#8463
30K
18.64 mi12:52:522:21:387:3626:24
8:30
#8857
20M
20.00 mi13:04:512:33:377:4111:59
8:49
#8978
21M
21.00 mi13:14:252:43:117:469:34
9:34
#9032
35K
21.75 mi13:20:452:49:317:486:20
8:28
#9052
23M
23.00 mi13:32:113:00:577:5211:26
9:08
#9171
24M
24.00 mi13:41:093:09:557:558:58
8:58
#9297
40K
24.85 mi13:48:393:17:257:577:30
8:46
#9303
25.2M
25.20 mi13:51:503:20:367:583:11
9:14
#9264
Finish
26.22 mi13:59:323:28:187:577:42
7:33
#9069
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi74189699698154(Top 32%)1335(Top 12%)1335(Top 29%)
10K6.21 mi3.10 mi8062-6441227-2581227-2588817(Top 35%)1560(Top 14%)1560(Top 33%)
15K9.32 mi3.11 mi8045+171244-171244-178154(Top 32%)1335(Top 12%)1335(Top 29%)
20K12.43 mi3.11 mi7960+851233+111233+117956(Top 31%)1366(Top 13%)1366(Top 29%)
Half13.11 mi0.68 mi8017-571264-311264-319365(Top 37%)1997(Top 18%)1997(Top 43%)
25K15.53 mi2.42 mi8463-4461486-2221486-22210831(Top 42%)2878(Top 26%)2878(Top 62%)
30K18.64 mi3.11 mi8857-3941750-2641750-26410650(Top 42%)3015(Top 28%)3015(Top 65%)
20M20.00 mi1.36 mi8978-1211863-1131863-11311171(Top 44%)3569(Top 33%)3569(Top 77%)
21M21.00 mi1.00 mi9032-541958-951958-9511152(Top 44%)3816(Top 35%)3816(Top 82%)
35K21.75 mi0.75 mi9052-201991-331991-3310544(Top 41%)3504(Top 32%)3504(Top 75%)
23M23.00 mi1.25 mi9171-1192114-1232114-12311840(Top 46%)4315(Top 40%)4315(Top 93%)
24M24.00 mi1.00 mi9297-1262227-1132227-11311973(Top 47%)4381(Top 40%)4381(Top 94%)
40K24.85 mi0.85 mi9303-62272-452272-459740(Top 38%)3434(Top 31%)3434(Top 74%)
25.2M25.20 mi0.35 mi9264+392274-22274-27651(Top 30%)2490(Top 23%)2490(Top 53%)
Finish26.22 mi1.02 mi9069+1952232+422232+425962(Top 23%)1643(Top 15%)1643(Top 35%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

8154

Females

1335

F18-39

1335

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

8817

Females

1560

F18-39

1560

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

8154

Females

1335

F18-39

1335

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

7956

Females

1366

F18-39

1366

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9365

Females

1997

F18-39

1997

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

10831

Females

2878

F18-39

2878

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

10650

Females

3015

F18-39

3015

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11171

Females

3569

F18-39

3569

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

11152

Females

3816

F18-39

3816

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

10544

Females

3504

F18-39

3504

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

11840

Females

4315

F18-39

4315

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

11973

Females

4381

F18-39

4381

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

9740

Females

3434

F18-39

3434

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7651

Females

2490

F18-39

2490

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

5962

Females

1643

F18-39

1643

Passing Analysis

Category:
Athletes Passed
1511
Passed By
3162
Net Change
-1651
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7418
5K → 10K56700-644#7418#8062
10K → 15K179162+17#8062#8045
15K → 20K209124+85#8045#7960
20K → Half1976-57#7960#8017
Half → 25K97543-446#8017#8463
25K → 30K157551-394#8463#8857
30K → 20M87208-121#8857#8978
20M → 21M120174-54#8978#9032
21M → 35K6282-20#9032#9052
35K → 23M114233-119#9052#9171
23M → 24M57183-126#9171#9297
24M → 40K8995-6#9297#9303
40K → 25.2M6021+39#9303#9264
25.2M → Finish20510+195#9264#9069
TOTALS15113162-1651
📊

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