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BOSTON MARATHON 2023

Xuanhuong Tonnu

Bib: 12537•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Female)
#0 / 11423
Top 16%
Masters (Masters Women)
#0 / 6539
Top 6%
Division (F45-49)
#0 / 1817
Top 6%
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
8:11/mi
25:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:39/mi
49:10
↑ 79↓ 1380.4%
15K· 9.32 mi
7:25/mi
1:12:13
↑ 67↓ 78
20K· 12.43 mi
7:28/mi
1:35:25
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:40:23
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:58:46
↑ 66↓ 880.2%
30K· 18.64 mi
7:45/mi
2:22:52
↑ 181↓ 1480.2%
20M
7:38/mi
2:33:15
↑ 64↓ 500.2%
21M
8:11/mi
2:41:26
↑ 106↓ 241.6%
35K· 21.75 mi
7:10/mi
2:46:48
↑ 17↓ 861.7%
23M
7:37/mi
2:56:20
↑ 23↓ 630.6%
24M
7:26/mi
3:03:46
↓ 821.3%
40K· 24.85 mi
7:36/mi
3:10:16
↓ 200.3%
25.2M
8:30/mi
3:13:12
↑ 13↓ 160.2%
Finish· 26.22 mi
7:31/mi
3:20:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:40:23
Pace7:39 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:40:29
Pace7:40 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3425:258:1125:25
8:11
-
10K
6.21 mi11:16:1949:107:5523:45
7:39
-0:32
15K
9.32 mi11:39:221:12:137:4523:03
7:25
-0:14
20K
12.43 mi12:02:341:35:257:4123:12
7:28
+0:03
Half
13.11 mi12:07:321:40:237:394:58
7:17
-0:11
25K
15.53 mi12:25:551:58:467:3918:23
7:35
+0:18
30K
18.64 mi12:50:012:22:527:4024:06
7:45
+0:10
20M
20.00 mi13:00:242:33:157:4010:23
7:38
-0:07
21M
21.00 mi13:08:352:41:267:418:11
8:11
+0:33
35K
21.75 mi13:13:572:46:487:405:22
7:10
-1:01
23M
23.00 mi13:23:292:56:207:409:32
7:37
+0:27
24M
24.00 mi13:30:553:03:467:397:26
7:26
-0:11
40K
24.85 mi13:37:253:10:167:396:30
7:36
+0:10
25.2M
25.20 mi13:40:213:13:127:402:56
8:30
+0:54
Finish
26.22 mi13:48:013:20:527:407:40
7:31
-0:59

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

7:10 /mi

Average Pace

7:40 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:20

82% of race

Time at Steady Pace

33:36

17% of race

Time at Slower Pace

2:56

1% of race

Average Pace: 7:40 /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 mi10:52:3425:258:1125:25
8:11
#15320
10K
6.21 mi11:16:1949:107:5523:45
7:39
#13683
15K
9.32 mi11:39:221:12:137:4523:03
7:25
#12207
20K
12.43 mi12:02:341:35:257:4123:12
7:28
#11330
Half
13.11 mi12:07:321:40:237:394:58
7:17
#11173
25K
15.53 mi12:25:551:58:467:3918:23
7:35
#10867
30K
18.64 mi12:50:012:22:527:4024:06
7:45
#10471
20M
20.00 mi13:00:242:33:157:4010:23
7:38
#10259
21M
21.00 mi13:08:352:41:267:418:11
8:11
#10121
35K
21.75 mi13:13:572:46:487:405:22
7:10
#9941
23M
23.00 mi13:23:292:56:207:409:32
7:37
#9740
24M
24.00 mi13:30:553:03:467:397:26
7:26
#9602
40K
24.85 mi13:37:253:10:167:396:30
7:36
#9484
25.2M
25.20 mi13:40:213:13:127:402:56
8:30
#9461
Finish
26.22 mi13:48:013:20:527:407:40
7:31
#9421
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi15320484048409522(Top 36%)1628(Top 14%)1628(Top 90%)
10K6.21 mi3.10 mi13683+16373853+9873853+98711741(Top 44%)2717(Top 24%)2717(Top 150%)
15K9.32 mi3.11 mi12207+14763011+8423011+8429522(Top 36%)1628(Top 14%)1628(Top 90%)
20K12.43 mi3.11 mi11330+8772516+4952516+4959067(Top 34%)1519(Top 13%)1519(Top 84%)
Half13.11 mi0.68 mi11173+1572426+902426+908533(Top 32%)1312(Top 11%)1312(Top 72%)
25K15.53 mi2.42 mi10867+3062280+1462280+1469422(Top 35%)1742(Top 15%)1742(Top 96%)
30K18.64 mi3.11 mi10471+3962137+1432137+1439043(Top 34%)1727(Top 15%)1727(Top 95%)
20M20.00 mi1.36 mi10259+2122048+892048+897792(Top 29%)1328(Top 12%)1328(Top 73%)
21M21.00 mi1.00 mi10121+1382002+462002+468549(Top 32%)1737(Top 15%)1737(Top 96%)
35K21.75 mi0.75 mi9941+1801938+641938+646430(Top 24%)909(Top 8%)909(Top 50%)
23M23.00 mi1.25 mi9740+2011881+571881+577217(Top 27%)1259(Top 11%)1259(Top 69%)
24M24.00 mi1.00 mi9602+1381842+391842+397300(Top 27%)1409(Top 12%)1409(Top 78%)
40K24.85 mi0.85 mi9484+1181821+211821+217382(Top 28%)1521(Top 13%)1521(Top 84%)
25.2M25.20 mi0.35 mi9461+231823-21823-29612(Top 36%)2495(Top 22%)2495(Top 137%)
Finish26.22 mi1.02 mi9421+401827-41827-48748(Top 33%)2128(Top 19%)2128(Top 117%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9522

Females

1628

F45-49

1628

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

11741

Females

2717

F45-49

2717

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9522

Females

1628

F45-49

1628

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9067

Females

1519

F45-49

1519

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8533

Females

1312

F45-49

1312

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9422

Females

1742

F45-49

1742

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9043

Females

1727

F45-49

1727

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7792

Females

1328

F45-49

1328

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

8549

Females

1737

F45-49

1737

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6430

Females

909

F45-49

909

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7217

Females

1259

F45-49

1259

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7300

Females

1409

F45-49

1409

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7382

Females

1521

F45-49

1521

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9612

Females

2495

F45-49

2495

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

8748

Females

2128

F45-49

2128

Passing Analysis

Category:
Athletes Passed
6077*
Passed By
178
Net Change
+5899
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15320
5K → 10K165821+1637#15320#13683
10K → 15K14826+1476#13683#12207
15K → 20K8814+877#12207#11330
20K → Half1570+157#11330#11173
Half → 25K3148+306#11173#10867
25K → 30K42125+396#10867#10471
30K → 20M218*6+212#10471#10259
20M → 21M15517+138#10259#10121
21M → 35K181*1+180#10121#9941
35K → 23M21211+201#9941#9740
23M → 24M14810+138#9740#9602
24M → 40K124*6+118#9602#9484
40K → 25.2M4320+23#9484#9461
25.2M → Finish8343+40#9461#9421
TOTALS6077*178+5899

* 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