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BOSTON MARATHON 2025

Meisan Brown-Lum

Bib: 23147•F

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 43%
Masters (Masters Women)
#0 / 6759
Top 30%
Division (F45-49)
#0 / 1813
Top 36%
Race Day Weather
50°/40°F
broken 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
8:04/mi
25:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:04/mi
50:07
↑ 79↓ 1380.4%
15K· 9.32 mi
8:13/mi
1:15:38
↑ 67↓ 78
20K· 12.43 mi
8:32/mi
1:42:09
↑ 106↓ 860.1%
Half· 13.11 mi
8:08/mi
1:47:42
↑ 19↓ 370.5%
25K· 15.53 mi
8:14/mi
2:07:39
↑ 66↓ 880.2%
30K· 18.64 mi
8:39/mi
2:34:33
↑ 181↓ 1480.2%
20M
8:54/mi
2:46:38
↑ 64↓ 500.2%
21M
9:17/mi
2:55:55
↑ 106↓ 241.6%
35K· 21.75 mi
8:12/mi
3:02:03
↑ 17↓ 861.7%
23M
8:28/mi
3:12:39
↑ 23↓ 630.6%
24M
8:15/mi
3:20:54
↓ 821.3%
40K· 24.85 mi
8:22/mi
3:28:03
↓ 200.3%
25.2M
9:28/mi
3:31:19
↑ 13↓ 160.2%
Finish· 26.22 mi
7:55/mi
3:39:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:42
Pace8:13 /mi
2nd Half
Distance13.11 mi
Time1:51:41
Pace8:31 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0525:048:0425:04
8:04
-
10K
6.21 mi11:46:0850:078:0425:03
8:04
0:00
15K
9.32 mi12:11:391:15:388:0725:31
8:13
+0:09
20K
12.43 mi12:38:101:42:098:1326:31
8:32
+0:19
Half
13.11 mi12:43:431:47:428:135:33
8:08
-0:24
25K
15.53 mi13:03:402:07:398:1319:57
8:14
+0:06
30K
18.64 mi13:30:342:34:338:1726:54
8:39
+0:25
20M
20.00 mi13:42:392:46:388:2012:05
8:54
+0:15
21M
21.00 mi13:51:562:55:558:239:17
9:17
+0:23
35K
21.75 mi13:58:043:02:038:226:08
8:12
-1:05
23M
23.00 mi14:08:403:12:398:2310:36
8:28
+0:16
24M
24.00 mi14:16:553:20:548:228:15
8:15
-0:13
40K
24.85 mi14:24:043:28:038:227:09
8:22
+0:07
25.2M
25.20 mi14:27:203:31:198:233:16
9:28
+1:06
Finish
26.22 mi14:35:243:39:238:228:04
7:55
-1:33

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

7:55 /mi

Average Pace

8:22 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:45

89% of race

Time at Steady Pace

21:22

10% of race

Time at Slower Pace

3:16

1% of race

Average Pace: 8:22 /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 mi11:21:0525:048:0425:04
8:04
#17144
10K
6.21 mi11:46:0850:078:0425:03
8:04
#17007
15K
9.32 mi12:11:391:15:388:0725:31
8:13
#17195
20K
12.43 mi12:38:101:42:098:1326:31
8:32
#17479
Half
13.11 mi12:43:431:47:428:135:33
8:08
#17435
25K
15.53 mi13:03:402:07:398:1319:57
8:14
#17057
30K
18.64 mi13:30:342:34:338:1726:54
8:39
#16780
20M
20.00 mi13:42:392:46:388:2012:05
8:54
#16716
21M
21.00 mi13:51:562:55:558:239:17
9:17
#16562
35K
21.75 mi13:58:043:02:038:226:08
8:12
#16421
23M
23.00 mi14:08:403:12:398:2310:36
8:28
#16181
24M
24.00 mi14:16:553:20:548:228:15
8:15
#16032
40K
24.85 mi14:24:043:28:038:227:09
8:22
#15882
25.2M
25.20 mi14:27:203:31:198:233:16
9:28
#15845
Finish
26.22 mi14:35:243:39:238:228:04
7:55
#15719
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi171445821582117466(Top 61%)5990(Top 49%)5990(Top 330%)
10K6.21 mi3.10 mi17007+1375731+905731+9016948(Top 60%)5675(Top 46%)5675(Top 313%)
15K9.32 mi3.11 mi17195-1885827-965827-9617466(Top 61%)5990(Top 49%)5990(Top 330%)
20K12.43 mi3.11 mi17479-2846021-1946021-19418463(Top 65%)6602(Top 54%)6602(Top 364%)
Half13.11 mi0.68 mi17435+446000+216000+2116891(Top 59%)5694(Top 47%)5694(Top 314%)
25K15.53 mi2.42 mi17057+3785802+1985802+19815492(Top 55%)5018(Top 41%)5018(Top 277%)
30K18.64 mi3.11 mi16780+2775683+1195683+11915765(Top 56%)5321(Top 44%)5321(Top 293%)
20M20.00 mi1.36 mi16716+645669+145669+1416192(Top 57%)5711(Top 47%)5711(Top 315%)
21M21.00 mi1.00 mi16562+1545616+535616+5315089(Top 53%)5222(Top 43%)5222(Top 288%)
35K21.75 mi0.75 mi16421+1415555+615555+6113680(Top 48%)4527(Top 37%)4527(Top 250%)
23M23.00 mi1.25 mi16181+2405453+1025453+10213137(Top 46%)4346(Top 36%)4346(Top 240%)
24M24.00 mi1.00 mi16032+1495397+565397+5612961(Top 46%)4311(Top 35%)4311(Top 238%)
40K24.85 mi0.85 mi15882+1505333+645333+6412593(Top 44%)4246(Top 35%)4246(Top 234%)
25.2M25.20 mi0.35 mi15845+375329+45329+414496(Top 51%)5285(Top 43%)5285(Top 292%)
Finish26.22 mi1.02 mi15719+1265282+475282+4712347(Top 43%)4117(Top 34%)4117(Top 227%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17466

Females

5990

F45-49

5990

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

16948

Females

5675

F45-49

5675

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17466

Females

5990

F45-49

5990

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

18463

Females

6602

F45-49

6602

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

16891

Females

5694

F45-49

5694

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15492

Females

5018

F45-49

5018

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15765

Females

5321

F45-49

5321

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16192

Females

5711

F45-49

5711

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

15089

Females

5222

F45-49

5222

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

13680

Females

4527

F45-49

4527

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13137

Females

4346

F45-49

4346

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12961

Females

4311

F45-49

4311

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12593

Females

4246

F45-49

4246

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14496

Females

5285

F45-49

5285

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

12347

Females

4117

F45-49

4117

Passing Analysis

Category:
Athletes Passed
2656
Passed By
1231
Net Change
+1425
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17144
5K → 10K362225+137#17144#17007
10K → 15K133321-188#17007#17195
15K → 20K112396-284#17195#17479
20K → Half5814+44#17479#17435
Half → 25K39719+378#17435#17057
25K → 30K36992+277#17057#16780
30K → 20M13773+64#16780#16716
20M → 21M17723+154#16716#16562
21M → 35K1498+141#16562#16421
35K → 23M25212+240#16421#16181
23M → 24M16213+149#16181#16032
24M → 40K1555+150#16032#15882
40K → 25.2M5114+37#15882#15845
25.2M → Finish14216+126#15845#15719
TOTALS26561231+1425
📊

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