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BOSTON MARATHON 2023

Hailey James

Bib: 31901•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:52
Rank: #16339
Start → 5K
8:20/mi
25:52 split
10K· 6.21 mi
51:49
Rank: #16781 (-442)
5K → 10K
8:21/mi
25:57 split
15K· 9.32 mi
1:18:50
Rank: #17580 (-799)
10K → 15K
8:42/mi
27:01 split
20K· 12.43 mi
1:47:50
Rank: #18686 (-1106)
15K → 20K
9:20/mi
29:00 split
Half· 13.11 mi
1:54:16
Rank: #18891 (-205)
20K → Half
9:26/mi
6:26 split
25K· 15.53 mi
2:19:42
Rank: #20087 (-1196)
Half → 25K
10:29/mi
25:26 split
30K· 18.64 mi
2:51:59
Rank: #20551 (-464)
25K → 30K
10:23/mi
32:17 split
20M
3:06:50
Rank: #20749 (-198)
30K → 20M
10:56/mi
14:51 split
21M
3:18:24
Rank: #20844 (-95)
20M → 21M
11:34/mi
11:34 split
35K· 21.75 mi
3:25:40
Rank: #20820 (+24)
21M → 35K
9:43/mi
7:16 split
23M
3:38:45
Rank: #20835 (-15)
35K → 23M
10:27/mi
13:05 split
24M
3:48:38
Rank: #20805 (+30)
23M → 24M
9:53/mi
9:53 split
40K· 24.85 mi
3:57:53
Rank: #20851 (-46)
24M → 40K
10:49/mi
9:15 split
25.2M
4:02:34
Rank: #20955 (-104)
40K → 25.2M
13:35/mi
4:41 split
Finish· 26.22 mi
4:12:27
Rank: #20945 (+10)
25.2M → Finish
9:42/mi
9:53 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:16
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:18:11
Pace10:32 /mi
📊Positive Split: 20.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:2525:528:2025:52
8:20
-
10K
6.21 mi12:12:2251:498:2025:57
8:21
+0:01
15K
9.32 mi12:39:231:18:508:2727:01
8:42
+0:21
20K
12.43 mi13:08:231:47:508:4129:00
9:20
+0:38
Half
13.11 mi13:14:491:54:168:436:26
9:26
+0:06
25K
15.53 mi13:40:152:19:429:0025:26
10:29
+1:03
30K
18.64 mi14:12:322:51:599:1432:17
10:23
-0:06
20M
20.00 mi14:27:233:06:509:2014:51
10:56
+0:33
21M
21.00 mi14:38:573:18:249:2711:34
11:34
+0:38
35K
21.75 mi14:46:133:25:409:277:16
9:43
-1:51
23M
23.00 mi14:59:183:38:459:3113:05
10:27
+0:44
24M
24.00 mi15:09:113:48:389:329:53
9:53
-0:34
40K
24.85 mi15:18:263:57:539:349:15
10:49
+0:56
25.2M
25.20 mi15:23:074:02:349:384:41
13:35
+2:46
Finish
26.22 mi15:33:004:12:279:389:53
9:42
-3:53

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

8:20 /mi

Average Pace

9:38 /mi

Slowest Pace

13:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:50

31% of race

Time at Steady Pace

2:13:16

53% of race

Time at Slower Pace

40:21

16% of race

Average Pace: 9:38 /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 mi11:46:2525:528:2025:52
8:20
#16339
10K
6.21 mi12:12:2251:498:2025:57
8:21
#16781
15K
9.32 mi12:39:231:18:508:2727:01
8:42
#17580
20K
12.43 mi13:08:231:47:508:4129:00
9:20
#18686
Half
13.11 mi13:14:491:54:168:436:26
9:26
#18891
25K
15.53 mi13:40:152:19:429:0025:26
10:29
#20087
30K
18.64 mi14:12:322:51:599:1432:17
10:23
#20551
20M
20.00 mi14:27:233:06:509:2014:51
10:56
#20749
21M
21.00 mi14:38:573:18:249:2711:34
11:34
#20844
35K
21.75 mi14:46:133:25:409:277:16
9:43
#20820
23M
23.00 mi14:59:183:38:459:3113:05
10:27
#20835
24M
24.00 mi15:09:113:48:389:329:53
9:53
#20805
40K
24.85 mi15:18:263:57:539:349:15
10:49
#20851
25.2M
25.20 mi15:23:074:02:349:384:41
13:35
#20955
Finish
26.22 mi15:33:004:12:279:389:53
9:42
#20945
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi163395495549518968(Top 71%)7083(Top 62%)7083(Top 145%)
10K6.21 mi3.10 mi16781-4425767-2725767-27217274(Top 65%)6049(Top 53%)6049(Top 124%)
15K9.32 mi3.11 mi17580-7996265-4986265-49818968(Top 71%)7083(Top 62%)7083(Top 145%)
20K12.43 mi3.11 mi18686-11066925-6606925-66021059(Top 79%)8269(Top 72%)8269(Top 169%)
Half13.11 mi0.68 mi18891-2057056-1317056-13121920(Top 82%)8735(Top 76%)8735(Top 179%)
25K15.53 mi2.42 mi20087-11967755-6997755-69923184(Top 87%)9481(Top 83%)9481(Top 194%)
30K18.64 mi3.11 mi20551-4648037-2828037-28221976(Top 83%)8893(Top 78%)8893(Top 182%)
20M20.00 mi1.36 mi20749-1988148-1118148-11122579(Top 85%)9285(Top 81%)9285(Top 190%)
21M21.00 mi1.00 mi20844-958223-758223-7521994(Top 83%)8984(Top 79%)8984(Top 184%)
35K21.75 mi0.75 mi20820+248222+18222+120528(Top 77%)8239(Top 72%)8239(Top 169%)
23M23.00 mi1.25 mi20835-158242-208242-2021196(Top 80%)8623(Top 75%)8623(Top 177%)
24M24.00 mi1.00 mi20805+308232+108232+1020475(Top 77%)8249(Top 72%)8249(Top 169%)
40K24.85 mi0.85 mi20851-468269-378269-3721979(Top 83%)9139(Top 80%)9139(Top 187%)
25.2M25.20 mi0.35 mi20955-1048335-668335-6624607(Top 92%)10486(Top 92%)10486(Top 215%)
Finish26.22 mi1.02 mi20945+108340-58340-520810(Top 78%)8471(Top 74%)8471(Top 173%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18968

Females

7083

F18-39

7083

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17274

Females

6049

F18-39

6049

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18968

Females

7083

F18-39

7083

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

21059

Females

8269

F18-39

8269

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21920

Females

8735

F18-39

8735

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

23184

Females

9481

F18-39

9481

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

21976

Females

8893

F18-39

8893

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

22579

Females

9285

F18-39

9285

20M→21M

20.0 - 21.0 mi

Top 83%
×8story building
+106ft-24ft

Overall

21994

Females

8984

F18-39

8984

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20528

Females

8239

F18-39

8239

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

21196

Females

8623

F18-39

8623

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20475

Females

8249

F18-39

8249

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

21979

Females

9139

F18-39

9139

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24607

Females

10486

F18-39

10486

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20810

Females

8471

F18-39

8471

Passing Analysis

Category:
Athletes Passed
565
Passed By
5171
Net Change
-4606
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16339
5K → 10K139581-442#16339#16781
10K → 15K40839-799#16781#17580
15K → 20K241130-1106#17580#18686
20K → Half3208-205#18686#18891
Half → 25K81204-1196#18891#20087
25K → 30K48512-464#20087#20551
30K → 20M27225-198#20551#20749
20M → 21M35130-95#20749#20844
21M → 35K4824+24#20844#20820
35K → 23M6681-15#20820#20835
23M → 24M5626+30#20835#20805
24M → 40K2268-46#20805#20851
40K → 25.2M0104-104#20851#20955
25.2M → Finish4939+10#20955#20945
TOTALS5655171-4606
📊

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