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BOSTON MARATHON 2024

Lucy Blackford

Bib: 17744•F

NY

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 39%
Gender (Female)
#0 / 10924
Top 24%
Division (F18-39)
#0 / 4660
Top 40%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:24
Rank: #13518
Start → 5K
7:51/mi
24:24 split
10K· 6.21 mi
48:59
Rank: #13497 (+21)
5K → 10K
7:55/mi
24:35 split
15K· 9.32 mi
1:13:28
Rank: #13175 (+322)
10K → 15K
7:53/mi
24:29 split
20K· 12.43 mi
1:38:12
Rank: #12659 (+516)
15K → 20K
7:58/mi
24:44 split
Half· 13.11 mi
1:43:28
Rank: #12537 (+122)
20K → Half
7:43/mi
5:16 split
25K· 15.53 mi
2:02:45
Rank: #11994 (+543)
Half → 25K
7:57/mi
19:17 split
30K· 18.64 mi
2:28:27
Rank: #11408 (+586)
25K → 30K
8:16/mi
25:42 split
20M
2:39:55
Rank: #11155 (+253)
30K → 20M
8:26/mi
11:28 split
21M
2:48:48
Rank: #10850 (+305)
20M → 21M
8:53/mi
8:53 split
35K· 21.75 mi
2:54:52
Rank: #10752 (+98)
21M → 35K
8:07/mi
6:04 split
23M
3:05:01
Rank: #10393 (+359)
35K → 23M
8:06/mi
10:09 split
24M
3:13:04
Rank: #10194 (+199)
23M → 24M
8:03/mi
8:03 split
40K· 24.85 mi
3:20:09
Rank: #10066 (+128)
24M → 40K
8:17/mi
7:05 split
25.2M
3:23:24
Rank: #10018 (+48)
40K → 25.2M
9:25/mi
3:15 split
Finish· 26.22 mi
3:31:39
Rank: #9959 (+59)
25.2M → Finish
8:06/mi
8:15 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:28
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:48:11
Pace8:15 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1524:247:5124:24
7:51
-
10K
6.21 mi11:39:5048:597:5324:35
7:55
+0:04
15K
9.32 mi12:04:191:13:287:5324:29
7:53
-0:02
20K
12.43 mi12:29:031:38:127:5424:44
7:58
+0:05
Half
13.11 mi12:34:191:43:287:545:16
7:43
-0:15
25K
15.53 mi12:53:362:02:457:5419:17
7:57
+0:14
30K
18.64 mi13:19:182:28:277:5825:42
8:16
+0:19
20M
20.00 mi13:30:462:39:558:0011:28
8:26
+0:10
21M
21.00 mi13:39:392:48:488:028:53
8:53
+0:27
35K
21.75 mi13:45:432:54:528:026:04
8:07
-0:46
23M
23.00 mi13:55:523:05:018:0310:09
8:06
-0:01
24M
24.00 mi14:03:553:13:048:038:03
8:03
-0:03
40K
24.85 mi14:11:003:20:098:037:05
8:17
+0:14
25.2M
25.20 mi14:14:153:23:248:043:15
9:25
+1:08
Finish
26.22 mi14:22:303:31:398:058:15
8:06
-1:19

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

7:43 /mi

Average Pace

8:05 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

54:09

26% of race

Time at Steady Pace

2:13:54

63% of race

Time at Slower Pace

23:36

11% of race

Average Pace: 8:04 /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 mi11:15:1524:247:5124:24
7:51
#13518
10K
6.21 mi11:39:5048:597:5324:35
7:55
#13497
15K
9.32 mi12:04:191:13:287:5324:29
7:53
#13175
20K
12.43 mi12:29:031:38:127:5424:44
7:58
#12659
Half
13.11 mi12:34:191:43:287:545:16
7:43
#12537
25K
15.53 mi12:53:362:02:457:5419:17
7:57
#11994
30K
18.64 mi13:19:182:28:277:5825:42
8:16
#11408
20M
20.00 mi13:30:462:39:558:0011:28
8:26
#11155
21M
21.00 mi13:39:392:48:488:028:53
8:53
#10850
35K
21.75 mi13:45:432:54:528:026:04
8:07
#10752
23M
23.00 mi13:55:523:05:018:0310:09
8:06
#10393
24M
24.00 mi14:03:553:13:048:038:03
8:03
#10194
40K
24.85 mi14:11:003:20:098:037:05
8:17
#10066
25.2M
25.20 mi14:14:153:23:248:043:15
9:25
#10018
Finish
26.22 mi14:22:303:31:398:058:15
8:06
#9959
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi135184009400912530(Top 49%)3524(Top 32%)3524(Top 76%)
10K6.21 mi3.10 mi13497+214031-224031-2213536(Top 53%)4067(Top 37%)4067(Top 87%)
15K9.32 mi3.11 mi13175+3223849+1823849+18212530(Top 49%)3524(Top 32%)3524(Top 76%)
20K12.43 mi3.11 mi12659+5163578+2713578+27111575(Top 45%)3101(Top 28%)3101(Top 67%)
Half13.11 mi0.68 mi12537+1223514+643514+6410797(Top 42%)2694(Top 25%)2694(Top 58%)
25K15.53 mi2.42 mi11994+5433259+2553259+2559907(Top 39%)2440(Top 22%)2440(Top 52%)
30K18.64 mi3.11 mi11408+5863049+2103049+2109419(Top 37%)2419(Top 22%)2419(Top 52%)
20M20.00 mi1.36 mi11155+2532961+882961+889128(Top 36%)2518(Top 23%)2518(Top 54%)
21M21.00 mi1.00 mi10850+3052866+952866+958032(Top 31%)2196(Top 20%)2196(Top 47%)
35K21.75 mi0.75 mi10752+982845+212845+218493(Top 33%)2459(Top 23%)2459(Top 53%)
23M23.00 mi1.25 mi10393+3592728+1172728+1176329(Top 25%)1608(Top 15%)1608(Top 35%)
24M24.00 mi1.00 mi10194+1992666+622666+626926(Top 27%)1972(Top 18%)1972(Top 42%)
40K24.85 mi0.85 mi10066+1282647+192647+197273(Top 28%)2271(Top 21%)2271(Top 49%)
25.2M25.20 mi0.35 mi10018+482642+52642+58471(Top 33%)2879(Top 26%)2879(Top 62%)
Finish26.22 mi1.02 mi9959+592655-132655-139161(Top 36%)3124(Top 29%)3124(Top 67%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

12530

Females

3524

F18-39

3524

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

13536

Females

4067

F18-39

4067

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

12530

Females

3524

F18-39

3524

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

11575

Females

3101

F18-39

3101

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

10797

Females

2694

F18-39

2694

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

9907

Females

2440

F18-39

2440

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9419

Females

2419

F18-39

2419

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

9128

Females

2518

F18-39

2518

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8032

Females

2196

F18-39

2196

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

8493

Females

2459

F18-39

2459

35K→23M

21.8 - 23.0 mi

Top 25%
×5story building
+23ft-63ft

Overall

6329

Females

1608

F18-39

1608

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

6926

Females

1972

F18-39

1972

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7273

Females

2271

F18-39

2271

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8471

Females

2879

F18-39

2879

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9161

Females

3124

F18-39

3124

Passing Analysis

Category:
Athletes Passed
4220*
Passed By
661
Net Change
+3559
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13518
5K → 10K312291+21#13518#13497
10K → 15K40886+322#13497#13175
15K → 20K55337+516#13175#12659
20K → Half1242+122#12659#12537
Half → 25K56118+543#12537#11994
25K → 30K63852+586#11994#11408
30K → 20M28936+253#11408#11155
20M → 21M32621+305#11155#10850
21M → 35K11416+98#10850#10752
35K → 23M3667+359#10752#10393
23M → 24M2078+199#10393#10194
24M → 40K147*19+128#10194#10066
40K → 25.2M6315+48#10066#10018
25.2M → Finish112*53+59#10018#9959
TOTALS4220*661+3559

* 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