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BOSTON MARATHON 2024

Natalie Kofford

Bib: 12609•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 41%
Masters (Masters Women)
#0 / 6263
Top 29%
Division (F40-44)
#0 / 1613
Top 49%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
7:42/mi
23:55
↑ 97↓ 3451.5%
10K· 6.21 mi
7:43/mi
47:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:50/mi
1:12:16
↑ 67↓ 78
20K· 12.43 mi
7:49/mi
1:36:33
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:41:54
↑ 19↓ 370.5%
25K· 15.53 mi
8:07/mi
2:01:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:56/mi
2:29:21
↑ 181↓ 1480.2%
20M
10:14/mi
2:43:16
↑ 64↓ 500.2%
21M
13:24/mi
2:56:40
↑ 106↓ 241.6%
35K· 21.75 mi
9:24/mi
3:03:42
↑ 17↓ 861.7%
23M
9:33/mi
3:15:39
↑ 23↓ 630.6%
24M
9:22/mi
3:25:01
↓ 821.3%
40K· 24.85 mi
9:13/mi
3:32:54
↓ 200.3%
25.2M
10:55/mi
3:36:40
↑ 13↓ 160.2%
Finish· 26.22 mi
9:05/mi
3:45:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:54
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time2:04:01
Pace9:28 /mi
📊Positive Split: 21.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0923:557:4223:55
7:42
-
10K
6.21 mi11:17:0947:557:4324:00
7:43
+0:01
15K
9.32 mi11:41:301:12:167:4524:21
7:50
+0:07
20K
12.43 mi12:05:471:36:337:4624:17
7:49
-0:01
Half
13.11 mi12:11:081:41:547:465:21
7:50
+0:01
25K
15.53 mi12:30:492:01:357:5019:41
8:07
+0:17
30K
18.64 mi12:58:352:29:218:0127:46
8:56
+0:49
20M
20.00 mi13:12:302:43:168:1013:55
10:14
+1:18
21M
21.00 mi13:25:542:56:408:2513:24
13:24
+3:10
35K
21.75 mi13:32:563:03:428:277:02
9:24
-4:00
23M
23.00 mi13:44:533:15:398:3011:57
9:33
+0:09
24M
24.00 mi13:54:153:25:018:339:22
9:22
-0:11
40K
24.85 mi14:02:083:32:548:347:53
9:13
-0:09
25.2M
25.20 mi14:05:543:36:408:363:46
10:55
+1:42
Finish
26.22 mi14:15:093:45:558:379:15
9:05
-1:50

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

7:42 /mi

Average Pace

8:37 /mi

Slowest Pace

13:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:35

54% of race

Time at Steady Pace

1:13:15

32% of race

Time at Slower Pace

31:05

14% of race

Average Pace: 8:37 /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 mi10:53:0923:557:4223:55
7:42
#12318
10K
6.21 mi11:17:0947:557:4324:00
7:43
#12198
15K
9.32 mi11:41:301:12:167:4524:21
7:50
#12161
20K
12.43 mi12:05:471:36:337:4624:17
7:49
#11679
Half
13.11 mi12:11:081:41:547:465:21
7:50
#11666
25K
15.53 mi12:30:492:01:357:5019:41
8:07
#11480
30K
18.64 mi12:58:352:29:218:0127:46
8:56
#11750
20M
20.00 mi13:12:302:43:168:1013:55
10:14
#12298
21M
21.00 mi13:25:542:56:408:2513:24
13:24
#13291
35K
21.75 mi13:32:563:03:428:277:02
9:24
#13372
23M
23.00 mi13:44:533:15:398:3011:57
9:33
#13391
24M
24.00 mi13:54:153:25:018:339:22
9:22
#13400
40K
24.85 mi14:02:083:32:548:347:53
9:13
#13294
25.2M
25.20 mi14:05:543:36:408:363:46
10:55
#13317
Finish
26.22 mi14:15:093:45:558:379:15
9:05
#13350
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi123183316331612260(Top 48%)3396(Top 31%)3396(Top 211%)
10K6.21 mi3.10 mi12198+1203278+383278+3812078(Top 47%)3237(Top 30%)3237(Top 201%)
15K9.32 mi3.11 mi12161+373289-113289-1112260(Top 48%)3396(Top 31%)3396(Top 211%)
20K12.43 mi3.11 mi11679+4823042+2473042+24710548(Top 41%)2600(Top 24%)2600(Top 161%)
Half13.11 mi0.68 mi11666+133037+53037+511718(Top 46%)3199(Top 29%)3199(Top 198%)
25K15.53 mi2.42 mi11480+1862972+652972+6510929(Top 43%)2936(Top 27%)2936(Top 182%)
30K18.64 mi3.11 mi11750-2703213-2413213-24112923(Top 51%)4240(Top 39%)4240(Top 263%)
20M20.00 mi1.36 mi12298-5483568-3553568-35517237(Top 67%)6837(Top 63%)6837(Top 424%)
21M21.00 mi1.00 mi13291-9934200-6324200-63221411(Top 84%)9000(Top 82%)9000(Top 558%)
35K21.75 mi0.75 mi13372-814282-824282-8215132(Top 59%)5894(Top 54%)5894(Top 365%)
23M23.00 mi1.25 mi13391-194348-664348-6613714(Top 54%)5274(Top 48%)5274(Top 327%)
24M24.00 mi1.00 mi13400-94406-584406-5813873(Top 54%)5370(Top 49%)5370(Top 333%)
40K24.85 mi0.85 mi13294+1064382+244382+2411910(Top 47%)4494(Top 41%)4494(Top 279%)
25.2M25.20 mi0.35 mi13317-234406-244406-2414251(Top 56%)5674(Top 52%)5674(Top 352%)
Finish26.22 mi1.02 mi13350-334463-574463-5714601(Top 57%)5771(Top 53%)5771(Top 358%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

12260

Females

3396

F40-44

3396

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

12078

Females

3237

F40-44

3237

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

12260

Females

3396

F40-44

3396

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10548

Females

2600

F40-44

2600

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

11718

Females

3199

F40-44

3199

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

10929

Females

2936

F40-44

2936

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

12923

Females

4240

F40-44

4240

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17237

Females

6837

F40-44

6837

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

21411

Females

9000

F40-44

9000

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15132

Females

5894

F40-44

5894

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

13714

Females

5274

F40-44

5274

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

13873

Females

5370

F40-44

5370

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

11910

Females

4494

F40-44

4494

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

14251

Females

5674

F40-44

5674

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

14601

Females

5771

F40-44

5771

Passing Analysis

Category:
Athletes Passed
2243
Passed By
3275
Net Change
-1032
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12318
5K → 10K354234+120#12318#12198
10K → 15K244207+37#12198#12161
15K → 20K50826+482#12161#11679
20K → Half4835+13#11679#11666
Half → 25K302116+186#11666#11480
25K → 30K206476-270#11480#11750
30K → 20M41589-548#11750#12298
20M → 21M131006-993#12298#13291
21M → 35K65146-81#13291#13372
35K → 23M118137-19#13372#13391
23M → 24M98107-9#13391#13400
24M → 40K14236+106#13400#13294
40K → 25.2M3760-23#13294#13317
25.2M → Finish67100-33#13317#13350
TOTALS22433275-1032
📊

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