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BOSTON MARATHON 2024

Lei Fang

Bib: 13950•F

AB

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 37%
Gender (Female)
#0 / 10924
Top 22%
Masters (Masters Women)
#0 / 6263
Top 11%
Division (F50-54)
#0 / 1187
Top 6%
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
7:21/mi
22:51
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
45:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:09:24
↑ 67↓ 78
20K· 12.43 mi
7:47/mi
1:33:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:38:56
↑ 19↓ 370.5%
25K· 15.53 mi
8:00/mi
1:58:21
↑ 66↓ 880.2%
30K· 18.64 mi
8:31/mi
2:24:49
↑ 181↓ 1480.2%
20M
8:42/mi
2:36:38
↑ 64↓ 500.2%
21M
9:55/mi
2:46:33
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:52:35
↑ 17↓ 861.7%
23M
8:32/mi
3:03:16
↑ 23↓ 630.6%
24M
8:09/mi
3:11:25
↓ 821.3%
40K· 24.85 mi
8:11/mi
3:18:25
↓ 200.3%
25.2M
9:05/mi
3:21:33
↑ 13↓ 160.2%
Finish· 26.22 mi
7:47/mi
3:29:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:56
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:50:33
Pace8:26 /mi
📊Positive Split: 11.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4822:517:2122:51
7:21
-
10K
6.21 mi11:15:5245:557:2323:04
7:25
+0:04
15K
9.32 mi11:39:211:09:247:2723:29
7:34
+0:09
20K
12.43 mi12:03:321:33:357:3224:11
7:47
+0:13
Half
13.11 mi12:08:531:38:567:335:21
7:50
+0:03
25K
15.53 mi12:28:181:58:217:3719:25
8:00
+0:10
30K
18.64 mi12:54:462:24:497:4626:28
8:31
+0:31
20M
20.00 mi13:06:352:36:387:5011:49
8:42
+0:11
21M
21.00 mi13:16:302:46:337:569:55
9:55
+1:13
35K
21.75 mi13:22:322:52:357:566:02
8:04
-1:51
23M
23.00 mi13:33:133:03:167:5810:41
8:32
+0:28
24M
24.00 mi13:41:223:11:257:598:09
8:09
-0:23
40K
24.85 mi13:48:223:18:257:597:00
8:11
+0:02
25.2M
25.20 mi13:51:303:21:338:003:08
9:05
+0:54
Finish
26.22 mi13:59:263:29:298:007:56
7:47
-1:18

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

7:21 /mi

Average Pace

8:00 /mi

Slowest Pace

9:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:09:24

33% of race

Time at Steady Pace

1:18:04

37% of race

Time at Slower Pace

1:02:01

30% of race

Average Pace: 7:59 /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 mi10:52:4822:517:2122:51
7:21
#9614
10K
6.21 mi11:15:5245:557:2323:04
7:25
#9562
15K
9.32 mi11:39:211:09:247:2723:29
7:34
#9715
20K
12.43 mi12:03:321:33:357:3224:11
7:47
#9866
Half
13.11 mi12:08:531:38:567:335:21
7:50
#9969
25K
15.53 mi12:28:181:58:217:3719:25
8:00
#9925
30K
18.64 mi12:54:462:24:497:4626:28
8:31
#10032
20M
20.00 mi13:06:352:36:387:5011:49
8:42
#10009
21M
21.00 mi13:16:302:46:337:569:55
9:55
#10160
35K
21.75 mi13:22:322:52:357:566:02
8:04
#10050
23M
23.00 mi13:33:133:03:167:5810:41
8:32
#9904
24M
24.00 mi13:41:223:11:257:598:09
8:09
#9746
40K
24.85 mi13:48:223:18:257:597:00
8:11
#9601
25.2M
25.20 mi13:51:303:21:338:003:08
9:05
#9523
Finish
26.22 mi13:59:263:29:298:007:56
7:47
#9422
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi96141851185110117(Top 40%)2236(Top 20%)2236(Top 188%)
10K6.21 mi3.10 mi9562+521852-11852-19627(Top 38%)1936(Top 18%)1936(Top 163%)
15K9.32 mi3.11 mi9715-1531964-1121964-11210117(Top 40%)2236(Top 20%)2236(Top 188%)
20K12.43 mi3.11 mi9866-1512073-1092073-10910328(Top 40%)2498(Top 23%)2498(Top 210%)
Half13.11 mi0.68 mi9969-1032139-662139-6611656(Top 46%)3137(Top 29%)3137(Top 264%)
25K15.53 mi2.42 mi9925+442185-462185-4610254(Top 40%)2609(Top 24%)2609(Top 220%)
30K18.64 mi3.11 mi10032-1072334-1492334-14910757(Top 42%)3071(Top 28%)3071(Top 259%)
20M20.00 mi1.36 mi10009+232385-512385-5110519(Top 41%)3207(Top 29%)3207(Top 270%)
21M21.00 mi1.00 mi10160-1512510-1252510-12512651(Top 50%)4599(Top 42%)4599(Top 387%)
35K21.75 mi0.75 mi10050+1102497+132497+138210(Top 32%)2324(Top 21%)2324(Top 196%)
23M23.00 mi1.25 mi9904+1462487+102487+108661(Top 34%)2704(Top 25%)2704(Top 228%)
24M24.00 mi1.00 mi9746+1582449+382449+387497(Top 29%)2244(Top 21%)2244(Top 189%)
40K24.85 mi0.85 mi9601+1452420+292420+296741(Top 26%)1997(Top 18%)1997(Top 168%)
25.2M25.20 mi0.35 mi9523+782400+202400+206992(Top 27%)2172(Top 20%)2172(Top 183%)
Finish26.22 mi1.02 mi9422+1012387+132387+137292(Top 29%)2247(Top 21%)2247(Top 189%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10117

Females

2236

F50-54

2236

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

9627

Females

1936

F50-54

1936

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10117

Females

2236

F50-54

2236

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

10328

Females

2498

F50-54

2498

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

11656

Females

3137

F50-54

3137

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

10254

Females

2609

F50-54

2609

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

10757

Females

3071

F50-54

3071

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10519

Females

3207

F50-54

3207

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

12651

Females

4599

F50-54

4599

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8210

Females

2324

F50-54

2324

35K→23M

21.8 - 23.0 mi

Top 34%
×5story building
+23ft-63ft

Overall

8661

Females

2704

F50-54

2704

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

7497

Females

2244

F50-54

2244

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6741

Females

1997

F50-54

1997

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

6992

Females

2172

F50-54

2172

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

7292

Females

2247

F50-54

2247

Passing Analysis

Category:
Athletes Passed
2202*
Passed By
2004
Net Change
+192
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9614
5K → 10K275223+52#9614#9562
10K → 15K158311-153#9562#9715
15K → 20K155305-151#9715#9866
20K → Half14117-103#9866#9969
Half → 25K232187+44#9969#9925
25K → 30K239344-107#9925#10032
30K → 20M147123+23#10032#10009
20M → 21M86236-151#10009#10160
21M → 35K13525+110#10160#10050
35K → 23M205*59+146#10050#9904
23M → 24M180*22+158#9904#9746
24M → 40K15712+145#9746#9601
40K → 25.2M868+78#9601#9523
25.2M → Finish13332+101#9523#9422
TOTALS2202*2004+192

* 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