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BOSTON MARATHON 2023

Lena Tian

Bib: 19779•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 40%
Masters (Masters Women)
#0 / 6539
Top 28%
Division (F50-54)
#0 / 1207
Top 19%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
8:08/mi
25:16
↑ 97↓ 3451.5%
10K· 6.21 mi
7:54/mi
49:50
↑ 79↓ 1380.4%
15K· 9.32 mi
7:54/mi
1:14:23
↑ 67↓ 78
20K· 12.43 mi
8:03/mi
1:39:23
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:44:48
↑ 19↓ 370.5%
25K· 15.53 mi
8:15/mi
2:04:49
↑ 66↓ 880.2%
30K· 18.64 mi
8:31/mi
2:31:18
↑ 181↓ 1480.2%
20M
8:45/mi
2:43:11
↑ 64↓ 500.2%
21M
9:16/mi
2:52:27
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:58:29
↑ 17↓ 861.7%
23M
8:41/mi
3:09:21
↑ 23↓ 630.6%
24M
8:42/mi
3:18:03
↓ 821.3%
40K· 24.85 mi
9:04/mi
3:25:48
↓ 200.3%
25.2M
9:52/mi
3:29:12
↑ 13↓ 160.2%
Finish· 26.22 mi
9:00/mi
3:38:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:48
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:53:34
Pace8:40 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4425:168:0825:16
8:08
-
10K
6.21 mi11:43:1849:508:0124:34
7:54
-0:14
15K
9.32 mi12:07:511:14:237:5924:33
7:54
0:00
20K
12.43 mi12:32:511:39:238:0025:00
8:03
+0:09
Half
13.11 mi12:38:161:44:488:005:25
7:56
-0:07
25K
15.53 mi12:58:172:04:498:0220:01
8:15
+0:19
30K
18.64 mi13:24:462:31:188:0726:29
8:31
+0:16
20M
20.00 mi13:36:392:43:118:1011:53
8:45
+0:14
21M
21.00 mi13:45:552:52:278:139:16
9:16
+0:31
35K
21.75 mi13:51:572:58:298:126:02
8:04
-1:12
23M
23.00 mi14:02:493:09:218:1410:52
8:41
+0:37
24M
24.00 mi14:11:313:18:038:158:42
8:42
+0:01
40K
24.85 mi14:19:163:25:488:177:45
9:04
+0:22
25.2M
25.20 mi14:22:403:29:128:183:24
9:52
+0:48
Finish
26.22 mi14:31:503:38:228:209:10
9:00
-0:52

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

7:54 /mi

Average Pace

8:20 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:50

51% of race

Time at Steady Pace

1:17:57

36% of race

Time at Slower Pace

29:35

14% of race

Average Pace: 8:20 /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 mi11:18:4425:168:0825:16
8:08
#14963
10K
6.21 mi11:43:1849:508:0124:34
7:54
#14527
15K
9.32 mi12:07:511:14:237:5924:33
7:54
#14227
20K
12.43 mi12:32:511:39:238:0025:00
8:03
#14085
Half
13.11 mi12:38:161:44:488:005:25
7:56
#14075
25K
15.53 mi12:58:172:04:498:0220:01
8:15
#14157
30K
18.64 mi13:24:462:31:188:0726:29
8:31
#14224
20M
20.00 mi13:36:392:43:118:1011:53
8:45
#14280
21M
21.00 mi13:45:552:52:278:139:16
9:16
#14294
35K
21.75 mi13:51:572:58:298:126:02
8:04
#14221
23M
23.00 mi14:02:493:09:218:1410:52
8:41
#14194
24M
24.00 mi14:11:313:18:038:158:42
8:42
#14264
40K
24.85 mi14:19:163:25:488:177:45
9:04
#14348
25.2M
25.20 mi14:22:403:29:128:183:24
9:52
#14385
Finish
26.22 mi14:31:503:38:228:209:10
9:00
#14524
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi149634616461613581(Top 51%)3828(Top 34%)3828(Top 317%)
10K6.21 mi3.10 mi14527+4364358+2584358+25814065(Top 53%)4089(Top 36%)4089(Top 339%)
15K9.32 mi3.11 mi14227+3004194+1644194+16413581(Top 51%)3828(Top 34%)3828(Top 317%)
20K12.43 mi3.11 mi14085+1424137+574137+5713826(Top 52%)4006(Top 35%)4006(Top 332%)
Half13.11 mi0.68 mi14075+104128+94128+913969(Top 52%)4078(Top 36%)4078(Top 338%)
25K15.53 mi2.42 mi14157-824201-734201-7314654(Top 55%)4622(Top 40%)4622(Top 383%)
30K18.64 mi3.11 mi14224-674279-784279-7814478(Top 54%)4611(Top 40%)4611(Top 382%)
20M20.00 mi1.36 mi14280-564348-694348-6915135(Top 57%)5074(Top 44%)5074(Top 420%)
21M21.00 mi1.00 mi14294-144378-304378-3014824(Top 56%)4943(Top 43%)4943(Top 410%)
35K21.75 mi0.75 mi14221+734345+334345+3312635(Top 47%)3796(Top 33%)3796(Top 314%)
23M23.00 mi1.25 mi14194+274344+14344+114268(Top 54%)4768(Top 42%)4768(Top 395%)
24M24.00 mi1.00 mi14264-704412-684412-6815673(Top 59%)5622(Top 49%)5622(Top 466%)
40K24.85 mi0.85 mi14348-844481-694481-6916487(Top 62%)6117(Top 54%)6117(Top 507%)
25.2M25.20 mi0.35 mi14385-374518-374518-3716823(Top 63%)6314(Top 55%)6314(Top 523%)
Finish26.22 mi1.02 mi14524-1394615-974615-9717959(Top 67%)6885(Top 60%)6885(Top 570%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13581

Females

3828

F50-54

3828

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14065

Females

4089

F50-54

4089

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13581

Females

3828

F50-54

3828

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13826

Females

4006

F50-54

4006

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13969

Females

4078

F50-54

4078

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

14654

Females

4622

F50-54

4622

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

14478

Females

4611

F50-54

4611

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15135

Females

5074

F50-54

5074

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14824

Females

4943

F50-54

4943

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

12635

Females

3796

F50-54

3796

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14268

Females

4768

F50-54

4768

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

15673

Females

5622

F50-54

5622

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16487

Females

6117

F50-54

6117

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16823

Females

6314

F50-54

6314

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17959

Females

6885

F50-54

6885

Passing Analysis

Category:
Athletes Passed
1966
Passed By
1527
Net Change
+439
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14963
5K → 10K562126+436#14963#14527
10K → 15K36969+300#14527#14227
15K → 20K246104+142#14227#14085
20K → Half4030+10#14085#14075
Half → 25K116198-82#14075#14157
25K → 30K175242-67#14157#14224
30K → 20M64120-56#14224#14280
20M → 21M6781-14#14280#14294
21M → 35K9017+73#14294#14221
35K → 23M10881+27#14221#14194
23M → 24M46116-70#14194#14264
24M → 40K37121-84#14264#14348
40K → 25.2M1855-37#14348#14385
25.2M → Finish28167-139#14385#14524
TOTALS19661527+439
📊

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