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SF MARATHON 2026

Natsuki Furukawa

Bib: 3857•M•Age: 32

Redwood City, CA

0:00
0:00
/ mi
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Overall
#0 / 7166
Top 15%
Gender (Male)
#0 / 5052
Top 18%
Division (M30-34)
#0 / 1040
Top 19%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
2M
17:37
Rank: #1854
Start → 2M
8:48/mi
17:37 split
4M
35:18
Rank: #1865 (-11)
2M → 4M
8:51/mi
17:41 split
6M
52:49
Rank: #1814 (+51)
4M → 6M
8:45/mi
17:31 split
8M
1:09:48
Rank: #1726 (+88)
6M → 8M
8:29/mi
16:59 split
9.6M
1:24:28
Rank: #1745 (-19)
8M → 9.6M
9:10/mi
14:40 split
10M
1:26:49
Rank: #1728 (+17)
9.6M → 10M
5:53/mi
2:21 split
10.5M
1:32:43
Rank: #1738 (-10)
10M → 10.5M
11:48/mi
5:54 split
12M
1:45:53
Rank: #1806 (-68)
10.5M → 12M
8:47/mi
13:10 split
14M
2:04:14
Rank: #1728 (+78)
12M → 14M
9:10/mi
18:21 split
16M
2:20:49
Rank: #1814 (-86)
14M → 16M
8:17/mi
16:35 split
18M
2:37:23
Rank: #1504 (+310)
16M → 18M
8:17/mi
16:34 split
20M
2:54:11
Rank: #1375 (+129)
18M → 20M
8:24/mi
16:48 split
22M
3:09:23
Rank: #1236 (+139)
20M → 22M
7:36/mi
15:12 split
24M
3:27:06
Rank: #1143 (+93)
22M → 24M
8:52/mi
17:43 split
Finish· 26.22 mi
3:45:57
Rank: #1057 (+86)
24M → Finish
8:30/mi
18:51 split

The Course

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Half Splits

1st Half· via 14M
Distance14.00 mi
Time2:04:14
Pace8:52 /mi
2nd Half✓ Faster
Distance12.22 mi
Time1:41:43
Pace8:19 /mi
📊Negative Split: 18.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi05:37:1517:378:4817:37
8:48
-
4M
4.00 mi05:54:5635:188:5017:41
8:51
+0:03
6M
6.00 mi06:12:2752:498:4817:31
8:45
-0:06
8M
8.00 mi06:29:261:09:488:4316:59
8:29
-0:16
9.6M
9.60 mi06:44:061:24:288:4814:40
9:10
+0:41
10M
10.00 mi06:46:271:26:498:412:21
5:53
-3:17
10.5M
10.50 mi06:52:211:32:438:505:54
11:48
+5:55
12M
12.00 mi07:05:311:45:538:4913:10
8:47
-3:01
14M
14.00 mi07:23:522:04:148:5218:21
9:10
+0:23
16M
16.00 mi07:40:272:20:498:4816:35
8:17
-0:53
18M
18.00 mi07:57:012:37:238:4516:34
8:17
0:00
20M
20.00 mi08:13:492:54:118:4316:48
8:24
+0:07
22M
22.00 mi08:29:013:09:238:3615:12
7:36
-0:48
24M
24.00 mi08:46:443:27:068:3817:43
8:52
+1:16
Finish
26.22 mi09:05:353:45:578:3718:51
8:30
-0:22

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

5:53 /mi

Average Pace

8:37 /mi

Slowest Pace

11:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

17:33

8% of race

Time at Steady Pace

3:22:30

90% of race

Time at Slower Pace

5:54

3% of race

Average Pace: 8:37 /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
2M
2.00 mi05:37:1517:378:4817:37
8:48
#1854
4M
4.00 mi05:54:5635:188:5017:41
8:51
#1865
6M
6.00 mi06:12:2752:498:4817:31
8:45
#1814
8M
8.00 mi06:29:261:09:488:4316:59
8:29
#1726
9.6M
9.60 mi06:44:061:24:288:4814:40
9:10
#1745
10M
10.00 mi06:46:271:26:498:412:21
5:53
#1728
10.5M
10.50 mi06:52:211:32:438:505:54
11:48
#1738
12M
12.00 mi07:05:311:45:538:4913:10
8:47
#1806
14M
14.00 mi07:23:522:04:148:5218:21
9:10
#1728
16M
16.00 mi07:40:272:20:498:4816:35
8:17
#1814
18M
18.00 mi07:57:012:37:238:4516:34
8:17
#1504
20M
20.00 mi08:13:492:54:118:4316:48
8:24
#1375
22M
22.00 mi08:29:013:09:238:3615:12
7:36
#1236
24M
24.00 mi08:46:443:27:068:3817:43
8:52
#1143
Finish
26.22 mi09:05:353:45:578:3718:51
8:30
#1057
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Garmin Challenge
Featured Segment

Garmin Challenge

The climb, presented by Garmin

Top 24%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

8:15

Segment Time

9:10/mi

Pace

0.90 mi

Distance

Overall

1731

Men

1490

Division

319

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi185415973482495(Top 35%)2075(Top 41%)434(Top 42%)
4M4.00 mi2.00 mi1865-111597341+71913(Top 27%)1633(Top 32%)343(Top 33%)
6M6.00 mi2.00 mi1814+511553+44331+101747(Top 24%)1493(Top 30%)311(Top 30%)
8M8.00 mi2.00 mi1726+881482+71317+141536(Top 21%)1323(Top 26%)284(Top 27%)
9.6M9.60 mi1.60 mi1745-191499-17320-31903(Top 27%)1632(Top 32%)351(Top 34%)
10M10.00 mi0.40 mi1728+171484+15318+21389(Top 19%)1201(Top 24%)271(Top 26%)
10.5M10.50 mi0.50 mi1738-101495-113182027(Top 28%)1723(Top 34%)353(Top 34%)
12M12.00 mi1.50 mi1806-681547-52326-82495(Top 35%)2075(Top 41%)434(Top 42%)
14M14.00 mi2.00 mi1728+781483+64318+81404(Top 20%)1219(Top 24%)260(Top 25%)
16M16.00 mi2.00 mi1814-861543-60323-52532(Top 35%)2010(Top 40%)401(Top 39%)
18M18.00 mi2.00 mi1504+3101290+253268+55610(Top 9%)531(Top 11%)112(Top 11%)
20M20.00 mi2.00 mi1375+1291184+106244+24793(Top 11%)696(Top 14%)150(Top 14%)
22M22.00 mi2.00 mi1236+1391063+121227+17554(Top 8%)481(Top 10%)106(Top 10%)
24M24.00 mi2.00 mi1143+93985+78214+13701(Top 10%)596(Top 12%)117(Top 11%)
Finish26.22 mi2.22 mi1057+86913+72202+12662(Top 9%)562(Top 11%)116(Top 11%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 35%
×1human
+6ft-11ft

Overall

2495

Males

2075

M30-34

437

2M→4M

2.0 - 4.0 mi

Top 27%
×4stories
+75ft-70ft

Overall

1913

Males

1633

M30-34

345

4M→6M

4.0 - 6.0 mi

Top 24%
×5stories
+71ft-18ft

Overall

1747

Males

1493

M30-34

313

6M→8M

6.0 - 8.0 mi

Top 21%
×9stories
+106ft-21ft

Overall

1536

Males

1323

M30-34

286

8M→9.6M

8.0 - 9.6 mi

Top 27%
×13stories
+117ft-177ft

Overall

1903

Males

1632

M30-34

353

9.6M→10M

9.6 - 10.0 mi

Top 19%
×1story
+17ft-12ft

Overall

1389

Males

1201

M30-34

273

10M→10.5M

10.0 - 10.5 mi

Top 28%
×9stories
+0ft-102ft

Overall

2027

Males

1723

M30-34

356

10.5M→12M

10.5 - 12.0 mi

Top 35%
×18stories
+304ft-125ft

Overall

2495

Males

2075

M30-34

437

12M→14M

12.0 - 14.0 mi

Top 20%
×9stories
+99ft-125ft

Overall

1404

Males

1219

M30-34

262

14M→16M

14.0 - 16.0 mi

Top 35%
×9stories
+124ft-78ft

Overall

2532

Males

2010

M30-34

402

16M→18M

16.0 - 18.0 mi

Top 9%
×8stories
+106ft-45ft

Overall

610

Males

531

M30-34

113

18M→20M

18.0 - 20.0 mi

Top 11%
×3stories
+52ft-26ft

Overall

793

Males

696

M30-34

150

20M→22M

20.0 - 22.0 mi

Top 8%
×21stories
+17ft-266ft

Overall

554

Males

481

M30-34

106

22M→24M

22.0 - 24.0 mi

Top 10%
×3stories
+70ft-85ft

Overall

701

Males

596

M30-34

117

24M→Finish

24.0 - 26.2 mi

Top 9%
~flat
+2ft-2ft

Overall

662

Males

562

M30-34

116

Passing Analysis

Category:
Athletes Passed
1292*
Passed By
495
Net Change
+797
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#1854
2M → 4M8394-11#1854#1865
4M → 6M8736+51#1865#1814
6M → 8M109*21+88#1814#1726
8M → 9.6M3352-19#1726#1745
9.6M → 10M192+17#1745#1728
10M → 10.5M1626-10#1728#1738
10.5M → 12M2391-68#1738#1806
12M → 14M89*11+78#1806#1728
14M → 16M62*148-86#1728#1814
16M → 18M3144+310#1814#1504
18M → 20M129*0+129#1504#1375
20M → 22M140*1+139#1375#1236
22M → 24M97*4+93#1236#1143
24M → Finish91*5+86#1143#1057
TOTALS1292*495+797

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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