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BOSTON MARATHON 2024

Holly Grierson

Bib: 19345•F

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F40-44)
#0 / 1613
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
9:10/mi
28:29
↑ 97↓ 3451.5%
10K· 6.21 mi
9:47/mi
58:52
↑ 79↓ 1380.4%
15K· 9.32 mi
10:28/mi
1:31:24
↑ 67↓ 78
20K· 12.43 mi
11:03/mi
2:05:45
↑ 106↓ 860.1%
Half· 13.11 mi
10:55/mi
2:13:12
↑ 19↓ 370.5%
25K· 15.53 mi
11:39/mi
2:41:26
↑ 66↓ 880.2%
30K· 18.64 mi
13:09/mi
3:22:16
↑ 181↓ 1480.2%
20M
14:47/mi
3:42:21
↑ 64↓ 500.2%
21M
15:33/mi
3:57:54
↑ 106↓ 241.6%
35K· 21.75 mi
14:46/mi
4:08:57
↑ 17↓ 861.7%
23M
14:46/mi
4:27:26
↑ 23↓ 630.6%
24M
16:43/mi
4:44:09
↓ 821.3%
40K· 24.85 mi
18:04/mi
4:59:36
↓ 200.3%
25.2M
16:20/mi
5:05:14
↑ 13↓ 160.2%
Finish· 26.22 mi
15:25/mi
5:20:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:12
Pace10:10 /mi
2nd Half
Distance13.11 mi
Time3:07:45
Pace14:19 /mi
📊Positive Split: 41.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:1728:299:1028:29
9:10
-
10K
6.21 mi11:51:4058:529:2830:23
9:47
+0:37
15K
9.32 mi12:24:121:31:249:4832:32
10:28
+0:41
20K
12.43 mi12:58:332:05:4510:0734:21
11:03
+0:35
Half
13.11 mi13:06:002:13:1210:107:27
10:55
-0:08
25K
15.53 mi13:34:142:41:2610:2428:14
11:39
+0:44
30K
18.64 mi14:15:043:22:1610:5140:50
13:09
+1:30
20M
20.00 mi14:35:093:42:2111:0720:05
14:47
+1:38
21M
21.00 mi14:50:423:57:5411:2015:33
15:33
+0:46
35K
21.75 mi15:01:454:08:5711:2711:03
14:46
-0:47
23M
23.00 mi15:20:144:27:2611:3818:29
14:46
0:00
24M
24.00 mi15:36:574:44:0911:5016:43
16:43
+1:57
40K
24.85 mi15:52:244:59:3612:0315:27
18:04
+1:21
25.2M
25.20 mi15:58:025:05:1412:075:38
16:20
-1:44
Finish
26.22 mi16:13:455:20:5712:1515:43
15:25
-0:55

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

9:10 /mi

Average Pace

12:15 /mi

Slowest Pace

18:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:22:16

63% of race

Time at Steady Pace

1:20:53

25% of race

Time at Slower Pace

37:48

12% of race

Average Pace: 12:14 /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 mi11:21:1728:299:1028:29
9:10
#20706
10K
6.21 mi11:51:4058:529:2830:23
9:47
#21470
15K
9.32 mi12:24:121:31:249:4832:32
10:28
#22014
20K
12.43 mi12:58:332:05:4510:0734:21
11:03
#22256
Half
13.11 mi13:06:002:13:1210:107:27
10:55
#22327
25K
15.53 mi13:34:142:41:2610:2428:14
11:39
#22397
30K
18.64 mi14:15:043:22:1610:5140:50
13:09
#22669
20M
20.00 mi14:35:093:42:2111:0720:05
14:47
#22952
21M
21.00 mi14:50:423:57:5411:2015:33
15:33
#23063
35K
21.75 mi15:01:454:08:5711:2711:03
14:46
#23158
23M
23.00 mi15:20:144:27:2611:3818:29
14:46
#23266
24M
24.00 mi15:36:574:44:0911:5016:43
16:43
#23509
40K
24.85 mi15:52:244:59:3612:0315:27
18:04
#23725
25.2M
25.20 mi15:58:025:05:1412:075:38
16:20
#23741
Finish
26.22 mi16:13:455:20:5712:1515:43
15:25
#23885
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi207068257825722878(Top 90%)9363(Top 86%)9363(Top 580%)
10K6.21 mi3.10 mi21470-7648631-3748631-37422053(Top 86%)8946(Top 82%)8946(Top 555%)
15K9.32 mi3.11 mi22014-5448903-2728903-27222878(Top 90%)9363(Top 86%)9363(Top 580%)
20K12.43 mi3.11 mi22256-2429041-1389041-13822717(Top 89%)9303(Top 85%)9303(Top 577%)
Half13.11 mi0.68 mi22327-719083-429083-4223417(Top 92%)9732(Top 89%)9732(Top 603%)
25K15.53 mi2.42 mi22397-709122-399122-3922645(Top 89%)9353(Top 86%)9353(Top 580%)
30K18.64 mi3.11 mi22669-2729322-2009322-20023465(Top 92%)9886(Top 90%)9886(Top 613%)
20M20.00 mi1.36 mi22952-2839490-1689490-16824602(Top 96%)10519(Top 96%)10519(Top 652%)
21M21.00 mi1.00 mi23063-1119569-799569-7924136(Top 94%)10337(Top 95%)10337(Top 641%)
35K21.75 mi0.75 mi23158-959633-649633-6424778(Top 97%)10649(Top 97%)10649(Top 660%)
23M23.00 mi1.25 mi23266-1089691-589691-5824481(Top 96%)10519(Top 96%)10519(Top 652%)
24M24.00 mi1.00 mi23509-2439829-1389829-13825279(Top 99%)10852(Top 99%)10852(Top 673%)
40K24.85 mi0.85 mi23725-2169943-1149943-11425357(Top 99%)10874(Top 100%)10874(Top 674%)
25.2M25.20 mi0.35 mi23741-169953-109953-1024289(Top 95%)10492(Top 96%)10492(Top 650%)
Finish26.22 mi1.02 mi23885-14410042-8910042-8925270(Top 99%)10861(Top 99%)10861(Top 673%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

22878

Females

9363

F40-44

9363

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

22053

Females

8946

F40-44

8946

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

22878

Females

9363

F40-44

9363

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

22717

Females

9303

F40-44

9303

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

23417

Females

9732

F40-44

9732

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

22645

Females

9353

F40-44

9353

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

23465

Females

9886

F40-44

9886

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

24602

Females

10519

F40-44

10519

20M→21M

20.0 - 21.0 mi

Top 94%
×8story building
+106ft-24ft

Overall

24136

Females

10337

F40-44

10337

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

24778

Females

10649

F40-44

10649

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

24481

Females

10519

F40-44

10519

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

25279

Females

10852

F40-44

10852

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

25357

Females

10874

F40-44

10874

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

24289

Females

10492

F40-44

10492

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

25270

Females

10861

F40-44

10861

Passing Analysis

Category:
Athletes Passed
504
Passed By
3683
Net Change
-3179
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20706
5K → 10K56820-764#20706#21470
10K → 15K53597-544#21470#22014
15K → 20K104346-242#22014#22256
20K → Half1182-71#22256#22327
Half → 25K103173-70#22327#22397
25K → 30K74346-272#22397#22669
30K → 20M25308-283#22669#22952
20M → 21M22133-111#22952#23063
21M → 35K13108-95#23063#23158
35K → 23M25133-108#23158#23266
23M → 24M3246-243#23266#23509
24M → 40K4220-216#23509#23725
40K → 25.2M622-16#23725#23741
25.2M → Finish5149-144#23741#23885
TOTALS5043683-3179
📊

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